CINXE.COM

<!DOCTYPE html> <html class="client-nojs vector-feature-language-in-header-enabled vector-feature-language-in-main-page-header-disabled vector-feature-sticky-header-disabled vector-feature-page-tools-pinned-disabled vector-feature-toc-pinned-clientpref-1 vector-feature-main-menu-pinned-disabled vector-feature-limited-width-clientpref-1 vector-feature-limited-width-content-enabled vector-feature-custom-font-size-clientpref-1 vector-feature-appearance-pinned-clientpref-1 vector-feature-night-mode-enabled skin-theme-clientpref-day vector-toc-available" lang="en" dir="ltr"> <head> <meta charset="UTF-8"> <title>Analogue electronics - Wikipedia</title> <script>(function(){var className="client-js vector-feature-language-in-header-enabled vector-feature-language-in-main-page-header-disabled vector-feature-sticky-header-disabled vector-feature-page-tools-pinned-disabled vector-feature-toc-pinned-clientpref-1 vector-feature-main-menu-pinned-disabled vector-feature-limited-width-clientpref-1 vector-feature-limited-width-content-enabled vector-feature-custom-font-size-clientpref-1 vector-feature-appearance-pinned-clientpref-1 vector-feature-night-mode-enabled skin-theme-clientpref-day vector-toc-available";var cookie=document.cookie.match(/(?:^|; )enwikimwclientpreferences=([^;]+)/);if(cookie){cookie[1].split('%2C').forEach(function(pref){className=className.replace(new RegExp('(^| )'+pref.replace(/-clientpref-\w+$|[^\w-]+/g,'')+'-clientpref-\\w+( |$)'),'$1'+pref+'$2');});}document.documentElement.className=className;}());RLCONF={"wgBreakFrames":false,"wgSeparatorTransformTable":["",""],"wgDigitTransformTable":["",""],"wgDefaultDateFormat":"dmy", "wgMonthNames":["","January","February","March","April","May","June","July","August","September","October","November","December"],"wgRequestId":"e92ca259-b5a0-4aa0-aa81-352bab123dee","wgCanonicalNamespace":"","wgCanonicalSpecialPageName":false,"wgNamespaceNumber":0,"wgPageName":"Analogue_electronics","wgTitle":"Analogue electronics","wgCurRevisionId":1255948808,"wgRevisionId":1255948808,"wgArticleId":1665281,"wgIsArticle":true,"wgIsRedirect":false,"wgAction":"view","wgUserName":null,"wgUserGroups":["*"],"wgCategories":["Articles with short description","Short description matches Wikidata","Use Oxford spelling from August 2016","Articles containing explicitly cited American English-language text","Articles containing Ancient Greek (to 1453)-language text","All articles with failed verification","Articles with failed verification from April 2018","Analog circuits","Electronic engineering"],"wgPageViewLanguage":"en","wgPageContentLanguage":"en","wgPageContentModel":"wikitext", "wgRelevantPageName":"Analogue_electronics","wgRelevantArticleId":1665281,"wgIsProbablyEditable":true,"wgRelevantPageIsProbablyEditable":true,"wgRestrictionEdit":[],"wgRestrictionMove":[],"wgRedirectedFrom":"Analog_circuit","wgNoticeProject":"wikipedia","wgCiteReferencePreviewsActive":false,"wgFlaggedRevsParams":{"tags":{"status":{"levels":1}}},"wgMediaViewerOnClick":true,"wgMediaViewerEnabledByDefault":true,"wgPopupsFlags":0,"wgVisualEditor":{"pageLanguageCode":"en","pageLanguageDir":"ltr","pageVariantFallbacks":"en"},"wgMFDisplayWikibaseDescriptions":{"search":true,"watchlist":true,"tagline":false,"nearby":true},"wgWMESchemaEditAttemptStepOversample":false,"wgWMEPageLength":10000,"wgInternalRedirectTargetUrl":"/wiki/Analogue_electronics","wgRelatedArticlesCompat":[],"wgCentralAuthMobileDomain":false,"wgEditSubmitButtonLabelPublish":true,"wgULSPosition":"interlanguage","wgULSisCompactLinksEnabled":false,"wgVector2022LanguageInHeader":true,"wgULSisLanguageSelectorEmpty":false, "wgWikibaseItemId":"Q174925","wgCheckUserClientHintsHeadersJsApi":["brands","architecture","bitness","fullVersionList","mobile","model","platform","platformVersion"],"GEHomepageSuggestedEditsEnableTopics":true,"wgGETopicsMatchModeEnabled":false,"wgGEStructuredTaskRejectionReasonTextInputEnabled":false,"wgGELevelingUpEnabledForUser":false};RLSTATE={"ext.globalCssJs.user.styles":"ready","site.styles":"ready","user.styles":"ready","ext.globalCssJs.user":"ready","user":"ready","user.options":"loading","ext.cite.styles":"ready","skins.vector.search.codex.styles":"ready","skins.vector.styles":"ready","skins.vector.icons":"ready","jquery.makeCollapsible.styles":"ready","ext.wikimediamessages.styles":"ready","ext.visualEditor.desktopArticleTarget.noscript":"ready","ext.uls.interlanguage":"ready","wikibase.client.init":"ready","ext.wikimediaBadges":"ready"};RLPAGEMODULES=["mediawiki.action.view.redirect","ext.cite.ux-enhancements","mediawiki.page.media","site","mediawiki.page.ready", "jquery.makeCollapsible","mediawiki.toc","skins.vector.js","ext.centralNotice.geoIP","ext.centralNotice.startUp","ext.gadget.ReferenceTooltips","ext.gadget.switcher","ext.urlShortener.toolbar","ext.centralauth.centralautologin","mmv.bootstrap","ext.popups","ext.visualEditor.desktopArticleTarget.init","ext.visualEditor.targetLoader","ext.echo.centralauth","ext.eventLogging","ext.wikimediaEvents","ext.navigationTiming","ext.uls.interface","ext.cx.eventlogging.campaigns","ext.cx.uls.quick.actions","wikibase.client.vector-2022","ext.checkUser.clientHints","ext.growthExperiments.SuggestedEditSession","wikibase.sidebar.tracking"];</script> <script>(RLQ=window.RLQ||[]).push(function(){mw.loader.impl(function(){return["user.options@12s5i",function($,jQuery,require,module){mw.user.tokens.set({"patrolToken":"+\\","watchToken":"+\\","csrfToken":"+\\"}); }];});});</script> <link rel="stylesheet" href="/w/load.php?lang=en&modules=ext.cite.styles%7Cext.uls.interlanguage%7Cext.visualEditor.desktopArticleTarget.noscript%7Cext.wikimediaBadges%7Cext.wikimediamessages.styles%7Cjquery.makeCollapsible.styles%7Cskins.vector.icons%2Cstyles%7Cskins.vector.search.codex.styles%7Cwikibase.client.init&only=styles&skin=vector-2022"> <script async="" src="/w/load.php?lang=en&modules=startup&only=scripts&raw=1&skin=vector-2022"></script> <meta name="ResourceLoaderDynamicStyles" content=""> <link rel="stylesheet" href="/w/load.php?lang=en&modules=site.styles&only=styles&skin=vector-2022"> <meta name="generator" content="MediaWiki 1.44.0-wmf.4"> <meta name="referrer" content="origin"> <meta name="referrer" content="origin-when-cross-origin"> <meta name="robots" content="max-image-preview:standard"> <meta name="format-detection" content="telephone=no"> <meta property="og:image" content="https://upload.wikimedia.org/wikipedia/commons/4/4e/Kennline_NTC.png"> <meta property="og:image:width" content="1200"> <meta property="og:image:height" content="1200"> <meta property="og:image" content="https://upload.wikimedia.org/wikipedia/commons/thumb/4/4e/Kennline_NTC.png/800px-Kennline_NTC.png"> <meta property="og:image:width" content="800"> <meta property="og:image:height" content="800"> <meta property="og:image" content="https://upload.wikimedia.org/wikipedia/commons/thumb/4/4e/Kennline_NTC.png/640px-Kennline_NTC.png"> <meta property="og:image:width" content="640"> <meta property="og:image:height" content="640"> <meta name="viewport" content="width=1120"> <meta property="og:title" content="Analogue electronics - Wikipedia"> <meta property="og:type" content="website"> <link rel="preconnect" href="//upload.wikimedia.org"> <link rel="alternate" media="only screen and (max-width: 640px)" href="//en.m.wikipedia.org/wiki/Analogue_electronics"> <link rel="alternate" type="application/x-wiki" title="Edit this page" href="/w/index.php?title=Analogue_electronics&action=edit"> <link rel="apple-touch-icon" href="/static/apple-touch/wikipedia.png"> <link rel="icon" href="/static/favicon/wikipedia.ico"> <link rel="search" type="application/opensearchdescription+xml" href="/w/rest.php/v1/search" title="Wikipedia (en)"> <link rel="EditURI" type="application/rsd+xml" href="//en.wikipedia.org/w/api.php?action=rsd"> <link rel="canonical" href="https://en.wikipedia.org/wiki/Analogue_electronics"> <link rel="license" href="https://creativecommons.org/licenses/by-sa/4.0/deed.en"> <link rel="alternate" type="application/atom+xml" title="Wikipedia Atom feed" href="/w/index.php?title=Special:RecentChanges&feed=atom"> <link rel="dns-prefetch" href="//meta.wikimedia.org" /> <link rel="dns-prefetch" href="//login.wikimedia.org"> </head> <body class="skin--responsive skin-vector skin-vector-search-vue mediawiki ltr sitedir-ltr mw-hide-empty-elt ns-0 ns-subject mw-editable page-Analogue_electronics rootpage-Analogue_electronics skin-vector-2022 action-view"><a class="mw-jump-link" href="#bodyContent">Jump to content</a> <div class="vector-header-container"> <header class="vector-header mw-header"> <div class="vector-header-start"> <nav class="vector-main-menu-landmark" aria-label="Site"> <div id="vector-main-menu-dropdown" class="vector-dropdown vector-main-menu-dropdown vector-button-flush-left vector-button-flush-right" > <input type="checkbox" id="vector-main-menu-dropdown-checkbox" role="button" aria-haspopup="true" data-event-name="ui.dropdown-vector-main-menu-dropdown" class="vector-dropdown-checkbox " aria-label="Main menu" > <label id="vector-main-menu-dropdown-label" for="vector-main-menu-dropdown-checkbox" class="vector-dropdown-label cdx-button cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--weight-quiet cdx-button--icon-only " aria-hidden="true" ><span class="vector-icon mw-ui-icon-menu mw-ui-icon-wikimedia-menu"></span> <span class="vector-dropdown-label-text">Main menu</span> </label> <div class="vector-dropdown-content"> <div id="vector-main-menu-unpinned-container" class="vector-unpinned-container"> <div id="vector-main-menu" class="vector-main-menu vector-pinnable-element"> <div class="vector-pinnable-header vector-main-menu-pinnable-header vector-pinnable-header-unpinned" data-feature-name="main-menu-pinned" data-pinnable-element-id="vector-main-menu" data-pinned-container-id="vector-main-menu-pinned-container" data-unpinned-container-id="vector-main-menu-unpinned-container" > <div class="vector-pinnable-header-label">Main menu</div> <button class="vector-pinnable-header-toggle-button vector-pinnable-header-pin-button" data-event-name="pinnable-header.vector-main-menu.pin">move to sidebar</button> <button class="vector-pinnable-header-toggle-button vector-pinnable-header-unpin-button" data-event-name="pinnable-header.vector-main-menu.unpin">hide</button> </div> <div id="p-navigation" class="vector-menu mw-portlet mw-portlet-navigation" > <div class="vector-menu-heading"> Navigation </div> <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li id="n-mainpage-description" class="mw-list-item"><a href="/wiki/Main_Page" title="Visit the main page [z]" accesskey="z"><span>Main page</span></a></li><li id="n-contents" class="mw-list-item"><a href="/wiki/Wikipedia:Contents" title="Guides to browsing Wikipedia"><span>Contents</span></a></li><li id="n-currentevents" class="mw-list-item"><a href="/wiki/Portal:Current_events" title="Articles related to current events"><span>Current events</span></a></li><li id="n-randompage" class="mw-list-item"><a href="/wiki/Special:Random" title="Visit a randomly selected article [x]" accesskey="x"><span>Random article</span></a></li><li id="n-aboutsite" class="mw-list-item"><a href="/wiki/Wikipedia:About" title="Learn about Wikipedia and how it works"><span>About Wikipedia</span></a></li><li id="n-contactpage" class="mw-list-item"><a href="//en.wikipedia.org/wiki/Wikipedia:Contact_us" title="How to contact Wikipedia"><span>Contact us</span></a></li> </ul> </div> </div> <div id="p-interaction" class="vector-menu mw-portlet mw-portlet-interaction" > <div class="vector-menu-heading"> Contribute </div> <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li id="n-help" class="mw-list-item"><a href="/wiki/Help:Contents" title="Guidance on how to use and edit Wikipedia"><span>Help</span></a></li><li id="n-introduction" class="mw-list-item"><a href="/wiki/Help:Introduction" title="Learn how to edit Wikipedia"><span>Learn to edit</span></a></li><li id="n-portal" class="mw-list-item"><a href="/wiki/Wikipedia:Community_portal" title="The hub for editors"><span>Community portal</span></a></li><li id="n-recentchanges" class="mw-list-item"><a href="/wiki/Special:RecentChanges" title="A list of recent changes to Wikipedia [r]" accesskey="r"><span>Recent changes</span></a></li><li id="n-upload" class="mw-list-item"><a href="/wiki/Wikipedia:File_upload_wizard" title="Add images or other media for use on Wikipedia"><span>Upload file</span></a></li> </ul> </div> </div> </div> </div> </div> </div> </nav> <a href="/wiki/Main_Page" class="mw-logo"> <img class="mw-logo-icon" src="/static/images/icons/wikipedia.png" alt="" aria-hidden="true" height="50" width="50"> <span class="mw-logo-container skin-invert"> <img class="mw-logo-wordmark" alt="Wikipedia" src="/static/images/mobile/copyright/wikipedia-wordmark-en.svg" style="width: 7.5em; height: 1.125em;"> <img class="mw-logo-tagline" alt="The Free Encyclopedia" src="/static/images/mobile/copyright/wikipedia-tagline-en.svg" width="117" height="13" style="width: 7.3125em; height: 0.8125em;"> </span> </a> </div> <div class="vector-header-end"> <div id="p-search" role="search" class="vector-search-box-vue vector-search-box-collapses vector-search-box-show-thumbnail vector-search-box-auto-expand-width vector-search-box"> <a href="/wiki/Special:Search" class="cdx-button cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--weight-quiet cdx-button--icon-only search-toggle" title="Search Wikipedia [f]" accesskey="f"><span class="vector-icon mw-ui-icon-search mw-ui-icon-wikimedia-search"></span> <span>Search</span> </a> <div class="vector-typeahead-search-container"> <div class="cdx-typeahead-search cdx-typeahead-search--show-thumbnail cdx-typeahead-search--auto-expand-width"> <form action="/w/index.php" id="searchform" class="cdx-search-input cdx-search-input--has-end-button"> <div id="simpleSearch" class="cdx-search-input__input-wrapper" data-search-loc="header-moved"> <div class="cdx-text-input cdx-text-input--has-start-icon"> <input class="cdx-text-input__input" type="search" name="search" placeholder="Search Wikipedia" aria-label="Search Wikipedia" autocapitalize="sentences" title="Search Wikipedia [f]" accesskey="f" id="searchInput" > <span class="cdx-text-input__icon cdx-text-input__start-icon"></span> </div> <input type="hidden" name="title" value="Special:Search"> </div> <button class="cdx-button cdx-search-input__end-button">Search</button> </form> </div> </div> </div> <nav class="vector-user-links vector-user-links-wide" aria-label="Personal tools"> <div class="vector-user-links-main"> <div id="p-vector-user-menu-preferences" class="vector-menu mw-portlet emptyPortlet" > <div class="vector-menu-content"> <ul class="vector-menu-content-list"> </ul> </div> </div> <div id="p-vector-user-menu-userpage" class="vector-menu mw-portlet emptyPortlet" > <div class="vector-menu-content"> <ul class="vector-menu-content-list"> </ul> </div> </div> <nav class="vector-appearance-landmark" aria-label="Appearance"> <div id="vector-appearance-dropdown" class="vector-dropdown " title="Change the appearance of the page's font size, width, and color" > <input type="checkbox" id="vector-appearance-dropdown-checkbox" role="button" aria-haspopup="true" data-event-name="ui.dropdown-vector-appearance-dropdown" class="vector-dropdown-checkbox " aria-label="Appearance" > <label id="vector-appearance-dropdown-label" for="vector-appearance-dropdown-checkbox" class="vector-dropdown-label cdx-button cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--weight-quiet cdx-button--icon-only " aria-hidden="true" ><span class="vector-icon mw-ui-icon-appearance mw-ui-icon-wikimedia-appearance"></span> <span class="vector-dropdown-label-text">Appearance</span> </label> <div class="vector-dropdown-content"> <div id="vector-appearance-unpinned-container" class="vector-unpinned-container"> </div> </div> </div> </nav> <div id="p-vector-user-menu-notifications" class="vector-menu mw-portlet emptyPortlet" > <div class="vector-menu-content"> <ul class="vector-menu-content-list"> </ul> </div> </div> <div id="p-vector-user-menu-overflow" class="vector-menu mw-portlet" > <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li id="pt-sitesupport-2" class="user-links-collapsible-item mw-list-item user-links-collapsible-item"><a data-mw="interface" href="https://donate.wikimedia.org/wiki/Special:FundraiserRedirector?utm_source=donate&utm_medium=sidebar&utm_campaign=C13_en.wikipedia.org&uselang=en" class=""><span>Donate</span></a> </li> <li id="pt-createaccount-2" class="user-links-collapsible-item mw-list-item user-links-collapsible-item"><a data-mw="interface" href="/w/index.php?title=Special:CreateAccount&returnto=Analogue+electronics" title="You are encouraged to create an account and log in; however, it is not mandatory" class=""><span>Create account</span></a> </li> <li id="pt-login-2" class="user-links-collapsible-item mw-list-item user-links-collapsible-item"><a data-mw="interface" href="/w/index.php?title=Special:UserLogin&returnto=Analogue+electronics" title="You're encouraged to log in; however, it's not mandatory. [o]" accesskey="o" class=""><span>Log in</span></a> </li> </ul> </div> </div> </div> <div id="vector-user-links-dropdown" class="vector-dropdown vector-user-menu vector-button-flush-right vector-user-menu-logged-out" title="Log in and more options" > <input type="checkbox" id="vector-user-links-dropdown-checkbox" role="button" aria-haspopup="true" data-event-name="ui.dropdown-vector-user-links-dropdown" class="vector-dropdown-checkbox " aria-label="Personal tools" > <label id="vector-user-links-dropdown-label" for="vector-user-links-dropdown-checkbox" class="vector-dropdown-label cdx-button cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--weight-quiet cdx-button--icon-only " aria-hidden="true" ><span class="vector-icon mw-ui-icon-ellipsis mw-ui-icon-wikimedia-ellipsis"></span> <span class="vector-dropdown-label-text">Personal tools</span> </label> <div class="vector-dropdown-content"> <div id="p-personal" class="vector-menu mw-portlet mw-portlet-personal user-links-collapsible-item" title="User menu" > <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li id="pt-sitesupport" class="user-links-collapsible-item mw-list-item"><a href="https://donate.wikimedia.org/wiki/Special:FundraiserRedirector?utm_source=donate&utm_medium=sidebar&utm_campaign=C13_en.wikipedia.org&uselang=en"><span>Donate</span></a></li><li id="pt-createaccount" class="user-links-collapsible-item mw-list-item"><a href="/w/index.php?title=Special:CreateAccount&returnto=Analogue+electronics" title="You are encouraged to create an account and log in; however, it is not mandatory"><span class="vector-icon mw-ui-icon-userAdd mw-ui-icon-wikimedia-userAdd"></span> <span>Create account</span></a></li><li id="pt-login" class="user-links-collapsible-item mw-list-item"><a href="/w/index.php?title=Special:UserLogin&returnto=Analogue+electronics" title="You're encouraged to log in; however, it's not mandatory. [o]" accesskey="o"><span class="vector-icon mw-ui-icon-logIn mw-ui-icon-wikimedia-logIn"></span> <span>Log in</span></a></li> </ul> </div> </div> <div id="p-user-menu-anon-editor" class="vector-menu mw-portlet mw-portlet-user-menu-anon-editor" > <div class="vector-menu-heading"> Pages for logged out editors <a href="/wiki/Help:Introduction" aria-label="Learn more about editing"><span>learn more</span></a> </div> <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li id="pt-anoncontribs" class="mw-list-item"><a href="/wiki/Special:MyContributions" title="A list of edits made from this IP address [y]" accesskey="y"><span>Contributions</span></a></li><li id="pt-anontalk" class="mw-list-item"><a href="/wiki/Special:MyTalk" title="Discussion about edits from this IP address [n]" accesskey="n"><span>Talk</span></a></li> </ul> </div> </div> </div> </div> </nav> </div> </header> </div> <div class="mw-page-container"> <div class="mw-page-container-inner"> <div class="vector-sitenotice-container"> <div id="siteNotice"></div> </div> <div class="vector-column-start"> <div class="vector-main-menu-container"> <div id="mw-navigation"> <nav id="mw-panel" class="vector-main-menu-landmark" aria-label="Site"> <div id="vector-main-menu-pinned-container" class="vector-pinned-container"> </div> </nav> </div> </div> <div class="vector-sticky-pinned-container"> <nav id="mw-panel-toc" aria-label="Contents" data-event-name="ui.sidebar-toc" class="mw-table-of-contents-container vector-toc-landmark"> <div id="vector-toc-pinned-container" class="vector-pinned-container"> <div id="vector-toc" class="vector-toc vector-pinnable-element"> <div class="vector-pinnable-header vector-toc-pinnable-header vector-pinnable-header-pinned" data-feature-name="toc-pinned" data-pinnable-element-id="vector-toc" > <h2 class="vector-pinnable-header-label">Contents</h2> <button class="vector-pinnable-header-toggle-button vector-pinnable-header-pin-button" data-event-name="pinnable-header.vector-toc.pin">move to sidebar</button> <button class="vector-pinnable-header-toggle-button vector-pinnable-header-unpin-button" data-event-name="pinnable-header.vector-toc.unpin">hide</button> </div> <ul class="vector-toc-contents" id="mw-panel-toc-list"> <li id="toc-mw-content-text" class="vector-toc-list-item vector-toc-level-1"> <a href="#" class="vector-toc-link"> <div class="vector-toc-text">(Top)</div> </a> </li> <li id="toc-Analogue_signals" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#Analogue_signals"> <div class="vector-toc-text"> <span class="vector-toc-numb">1</span> <span>Analogue signals</span> </div> </a> <ul id="toc-Analogue_signals-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Inherent_noise" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#Inherent_noise"> <div class="vector-toc-text"> <span class="vector-toc-numb">2</span> <span>Inherent noise</span> </div> </a> <ul id="toc-Inherent_noise-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Analogue_vs_digital_electronics" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#Analogue_vs_digital_electronics"> <div class="vector-toc-text"> <span class="vector-toc-numb">3</span> <span>Analogue vs digital electronics</span> </div> </a> <button aria-controls="toc-Analogue_vs_digital_electronics-sublist" class="cdx-button cdx-button--weight-quiet cdx-button--icon-only vector-toc-toggle"> <span class="vector-icon mw-ui-icon-wikimedia-expand"></span> <span>Toggle Analogue vs digital electronics subsection</span> </button> <ul id="toc-Analogue_vs_digital_electronics-sublist" class="vector-toc-list"> <li id="toc-Noise" class="vector-toc-list-item vector-toc-level-2"> <a class="vector-toc-link" href="#Noise"> <div class="vector-toc-text"> <span class="vector-toc-numb">3.1</span> <span>Noise</span> </div> </a> <ul id="toc-Noise-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Precision" class="vector-toc-list-item vector-toc-level-2"> <a class="vector-toc-link" href="#Precision"> <div class="vector-toc-text"> <span class="vector-toc-numb">3.2</span> <span>Precision</span> </div> </a> <ul id="toc-Precision-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Design_difficulty" class="vector-toc-list-item vector-toc-level-2"> <a class="vector-toc-link" href="#Design_difficulty"> <div class="vector-toc-text"> <span class="vector-toc-numb">3.3</span> <span>Design difficulty</span> </div> </a> <ul id="toc-Design_difficulty-sublist" class="vector-toc-list"> </ul> </li> </ul> </li> <li id="toc-Circuit_classification" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#Circuit_classification"> <div class="vector-toc-text"> <span class="vector-toc-numb">4</span> <span>Circuit classification</span> </div> </a> <ul id="toc-Circuit_classification-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-See_also" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#See_also"> <div class="vector-toc-text"> <span class="vector-toc-numb">5</span> <span>See also</span> </div> </a> <ul id="toc-See_also-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-References" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#References"> <div class="vector-toc-text"> <span class="vector-toc-numb">6</span> <span>References</span> </div> </a> <ul id="toc-References-sublist" class="vector-toc-list"> </ul> </li> </ul> </div> </div> </nav> </div> </div> <div class="mw-content-container"> <main id="content" class="mw-body"> <header class="mw-body-header vector-page-titlebar"> <nav aria-label="Contents" class="vector-toc-landmark"> <div id="vector-page-titlebar-toc" class="vector-dropdown vector-page-titlebar-toc vector-button-flush-left" > <input type="checkbox" id="vector-page-titlebar-toc-checkbox" role="button" aria-haspopup="true" data-event-name="ui.dropdown-vector-page-titlebar-toc" class="vector-dropdown-checkbox " aria-label="Toggle the table of contents" > <label id="vector-page-titlebar-toc-label" for="vector-page-titlebar-toc-checkbox" class="vector-dropdown-label cdx-button cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--weight-quiet cdx-button--icon-only " aria-hidden="true" ><span class="vector-icon mw-ui-icon-listBullet mw-ui-icon-wikimedia-listBullet"></span> <span class="vector-dropdown-label-text">Toggle the table of contents</span> </label> <div class="vector-dropdown-content"> <div id="vector-page-titlebar-toc-unpinned-container" class="vector-unpinned-container"> </div> </div> </div> </nav> <h1 id="firstHeading" class="firstHeading mw-first-heading"><span class="mw-page-title-main">Analogue electronics</span></h1> <div id="p-lang-btn" class="vector-dropdown mw-portlet mw-portlet-lang" > <input type="checkbox" id="p-lang-btn-checkbox" role="button" aria-haspopup="true" data-event-name="ui.dropdown-p-lang-btn" class="vector-dropdown-checkbox mw-interlanguage-selector" aria-label="Go to an article in another language. Available in 33 languages" > <label id="p-lang-btn-label" for="p-lang-btn-checkbox" class="vector-dropdown-label cdx-button cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--weight-quiet cdx-button--action-progressive mw-portlet-lang-heading-33" aria-hidden="true" ><span class="vector-icon mw-ui-icon-language-progressive mw-ui-icon-wikimedia-language-progressive"></span> <span class="vector-dropdown-label-text">33 languages</span> </label> <div class="vector-dropdown-content"> <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li class="interlanguage-link interwiki-ar mw-list-item"><a href="https://ar.wikipedia.org/wiki/%D8%A5%D9%84%D9%83%D8%AA%D8%B1%D9%88%D9%86%D9%8A%D8%A7%D8%AA_%D8%AA%D9%85%D8%A7%D8%AB%D9%84%D9%8A%D8%A9" title="إلكترونيات تماثلية – Arabic" lang="ar" hreflang="ar" data-title="إلكترونيات تماثلية" data-language-autonym="العربية" data-language-local-name="Arabic" class="interlanguage-link-target"><span>العربية</span></a></li><li class="interlanguage-link interwiki-ca mw-list-item"><a href="https://ca.wikipedia.org/wiki/Electr%C3%B2nica_anal%C3%B2gica" title="Electrònica analògica – Catalan" lang="ca" hreflang="ca" data-title="Electrònica analògica" data-language-autonym="Català" data-language-local-name="Catalan" class="interlanguage-link-target"><span>Català</span></a></li><li class="interlanguage-link interwiki-cs mw-list-item"><a href="https://cs.wikipedia.org/wiki/Analogov%C3%BD_obvod" title="Analogový obvod – Czech" lang="cs" hreflang="cs" data-title="Analogový obvod" data-language-autonym="Čeština" data-language-local-name="Czech" class="interlanguage-link-target"><span>Čeština</span></a></li><li class="interlanguage-link interwiki-da mw-list-item"><a href="https://da.wikipedia.org/wiki/Analog_elektronik" title="Analog elektronik – Danish" lang="da" hreflang="da" data-title="Analog elektronik" data-language-autonym="Dansk" data-language-local-name="Danish" class="interlanguage-link-target"><span>Dansk</span></a></li><li class="interlanguage-link interwiki-de mw-list-item"><a href="https://de.wikipedia.org/wiki/Analogtechnik" title="Analogtechnik – German" lang="de" hreflang="de" data-title="Analogtechnik" data-language-autonym="Deutsch" data-language-local-name="German" class="interlanguage-link-target"><span>Deutsch</span></a></li><li class="interlanguage-link interwiki-et mw-list-item"><a href="https://et.wikipedia.org/wiki/Analoogelektroonika" title="Analoogelektroonika – Estonian" lang="et" hreflang="et" data-title="Analoogelektroonika" data-language-autonym="Eesti" data-language-local-name="Estonian" class="interlanguage-link-target"><span>Eesti</span></a></li><li class="interlanguage-link interwiki-es mw-list-item"><a href="https://es.wikipedia.org/wiki/Electr%C3%B3nica_anal%C3%B3gica" title="Electrónica analógica – Spanish" lang="es" hreflang="es" data-title="Electrónica analógica" data-language-autonym="Español" data-language-local-name="Spanish" class="interlanguage-link-target"><span>Español</span></a></li><li class="interlanguage-link interwiki-eo mw-list-item"><a href="https://eo.wikipedia.org/wiki/Analoga_elektroniko" title="Analoga elektroniko – Esperanto" lang="eo" hreflang="eo" data-title="Analoga elektroniko" data-language-autonym="Esperanto" data-language-local-name="Esperanto" class="interlanguage-link-target"><span>Esperanto</span></a></li><li class="interlanguage-link interwiki-eu mw-list-item"><a href="https://eu.wikipedia.org/wiki/Elektronika_analogiko" title="Elektronika analogiko – Basque" lang="eu" hreflang="eu" data-title="Elektronika analogiko" data-language-autonym="Euskara" data-language-local-name="Basque" class="interlanguage-link-target"><span>Euskara</span></a></li><li class="interlanguage-link interwiki-fa mw-list-item"><a href="https://fa.wikipedia.org/wiki/%D8%A7%D9%84%DA%A9%D8%AA%D8%B1%D9%88%D9%86%DB%8C%DA%A9_%D8%A2%D9%86%D8%A7%D9%84%D9%88%DA%AF" title="الکترونیک آنالوگ – Persian" lang="fa" hreflang="fa" data-title="الکترونیک آنالوگ" data-language-autonym="فارسی" data-language-local-name="Persian" class="interlanguage-link-target"><span>فارسی</span></a></li><li class="interlanguage-link interwiki-fr mw-list-item"><a href="https://fr.wikipedia.org/wiki/%C3%89lectronique_analogique" title="Électronique analogique – French" lang="fr" hreflang="fr" data-title="Électronique analogique" data-language-autonym="Français" data-language-local-name="French" class="interlanguage-link-target"><span>Français</span></a></li><li class="interlanguage-link interwiki-ko mw-list-item"><a href="https://ko.wikipedia.org/wiki/%EC%95%84%EB%82%A0%EB%A1%9C%EA%B7%B8_%ED%9A%8C%EB%A1%9C" title="아날로그 회로 – Korean" lang="ko" hreflang="ko" data-title="아날로그 회로" data-language-autonym="한국어" data-language-local-name="Korean" class="interlanguage-link-target"><span>한국어</span></a></li><li class="interlanguage-link interwiki-hy mw-list-item"><a href="https://hy.wikipedia.org/wiki/%D4%B1%D5%B6%D5%A1%D5%AC%D5%B8%D5%A3%D5%A1%D5%B5%D5%AB%D5%B6_%D5%A7%D5%AC%D5%A5%D5%AF%D5%BF%D6%80%D5%B8%D5%B6%D5%AB%D5%AF%D5%A1" title="Անալոգային էլեկտրոնիկա – Armenian" lang="hy" hreflang="hy" data-title="Անալոգային էլեկտրոնիկա" data-language-autonym="Հայերեն" data-language-local-name="Armenian" class="interlanguage-link-target"><span>Հայերեն</span></a></li><li class="interlanguage-link interwiki-hi mw-list-item"><a href="https://hi.wikipedia.org/wiki/%E0%A4%85%E0%A4%A8%E0%A5%81%E0%A4%B0%E0%A5%82%E0%A4%AA_%E0%A4%8F%E0%A4%B2%E0%A5%87%E0%A4%95%E0%A5%8D%E0%A4%9F%E0%A5%8D%E0%A4%B0%E0%A5%89%E0%A4%A8%E0%A4%BF%E0%A4%95%E0%A5%80" title="अनुरूप एलेक्ट्रॉनिकी – Hindi" lang="hi" hreflang="hi" data-title="अनुरूप एलेक्ट्रॉनिकी" data-language-autonym="हिन्दी" data-language-local-name="Hindi" class="interlanguage-link-target"><span>हिन्दी</span></a></li><li class="interlanguage-link interwiki-id mw-list-item"><a href="https://id.wikipedia.org/wiki/Sirkuit_analog" title="Sirkuit analog – Indonesian" lang="id" hreflang="id" data-title="Sirkuit analog" data-language-autonym="Bahasa Indonesia" data-language-local-name="Indonesian" class="interlanguage-link-target"><span>Bahasa Indonesia</span></a></li><li class="interlanguage-link interwiki-it mw-list-item"><a href="https://it.wikipedia.org/wiki/Elettronica_analogica" title="Elettronica analogica – Italian" lang="it" hreflang="it" data-title="Elettronica analogica" data-language-autonym="Italiano" data-language-local-name="Italian" class="interlanguage-link-target"><span>Italiano</span></a></li><li class="interlanguage-link interwiki-he mw-list-item"><a href="https://he.wikipedia.org/wiki/%D7%90%D7%9C%D7%A7%D7%98%D7%A8%D7%95%D7%A0%D7%99%D7%A7%D7%94_%D7%AA%D7%A7%D7%91%D7%99%D7%9C%D7%99%D7%AA" title="אלקטרוניקה תקבילית – Hebrew" lang="he" hreflang="he" data-title="אלקטרוניקה תקבילית" data-language-autonym="עברית" data-language-local-name="Hebrew" class="interlanguage-link-target"><span>עברית</span></a></li><li class="interlanguage-link interwiki-kk mw-list-item"><a href="https://kk.wikipedia.org/wiki/%D0%90%D0%BD%D0%B0%D0%BB%D0%BE%D0%B3%D1%82%D1%8B%D2%9B_%D0%B8%D0%BD%D1%82%D0%B5%D0%B3%D1%80%D0%B0%D0%BB%D0%B4%D1%8B%D2%9B_%D0%BC%D0%B8%D0%BA%D1%80%D0%BE%D1%81%D1%85%D0%B5%D0%BC%D0%B0" title="Аналогтық интегралдық микросхема – Kazakh" lang="kk" hreflang="kk" data-title="Аналогтық интегралдық микросхема" data-language-autonym="Қазақша" data-language-local-name="Kazakh" class="interlanguage-link-target"><span>Қазақша</span></a></li><li class="interlanguage-link interwiki-hu mw-list-item"><a href="https://hu.wikipedia.org/wiki/Anal%C3%B3g_m%C5%B1szerek_k%C3%B6z%C3%B6s_szerkezeti_elemei" title="Analóg műszerek közös szerkezeti elemei – Hungarian" lang="hu" hreflang="hu" data-title="Analóg műszerek közös szerkezeti elemei" data-language-autonym="Magyar" data-language-local-name="Hungarian" class="interlanguage-link-target"><span>Magyar</span></a></li><li class="interlanguage-link interwiki-ja mw-list-item"><a href="https://ja.wikipedia.org/wiki/%E3%82%A2%E3%83%8A%E3%83%AD%E3%82%B0%E5%9B%9E%E8%B7%AF" title="アナログ回路 – Japanese" lang="ja" hreflang="ja" data-title="アナログ回路" data-language-autonym="日本語" data-language-local-name="Japanese" class="interlanguage-link-target"><span>日本語</span></a></li><li class="interlanguage-link interwiki-uz mw-list-item"><a href="https://uz.wikipedia.org/wiki/Analog_elektronika" title="Analog elektronika – Uzbek" lang="uz" hreflang="uz" data-title="Analog elektronika" data-language-autonym="Oʻzbekcha / ўзбекча" data-language-local-name="Uzbek" class="interlanguage-link-target"><span>Oʻzbekcha / ўзбекча</span></a></li><li class="interlanguage-link interwiki-pl mw-list-item"><a href="https://pl.wikipedia.org/wiki/Technika_analogowa" title="Technika analogowa – Polish" lang="pl" hreflang="pl" data-title="Technika analogowa" data-language-autonym="Polski" data-language-local-name="Polish" class="interlanguage-link-target"><span>Polski</span></a></li><li class="interlanguage-link interwiki-sq mw-list-item"><a href="https://sq.wikipedia.org/wiki/Elektronika_analogjike" title="Elektronika analogjike – Albanian" lang="sq" hreflang="sq" data-title="Elektronika analogjike" data-language-autonym="Shqip" data-language-local-name="Albanian" class="interlanguage-link-target"><span>Shqip</span></a></li><li class="interlanguage-link interwiki-sr mw-list-item"><a href="https://sr.wikipedia.org/wiki/%D0%90%D0%BD%D0%B0%D0%BB%D0%BE%D0%B3%D0%BD%D0%B0_%D0%B5%D0%BB%D0%B5%D0%BA%D1%82%D1%80%D0%BE%D0%BD%D0%B8%D0%BA%D0%B0" title="Аналогна електроника – Serbian" lang="sr" hreflang="sr" data-title="Аналогна електроника" data-language-autonym="Српски / srpski" data-language-local-name="Serbian" class="interlanguage-link-target"><span>Српски / srpski</span></a></li><li class="interlanguage-link interwiki-sh mw-list-item"><a href="https://sh.wikipedia.org/wiki/Analogna_elektronika" title="Analogna elektronika – Serbo-Croatian" lang="sh" hreflang="sh" data-title="Analogna elektronika" data-language-autonym="Srpskohrvatski / српскохрватски" data-language-local-name="Serbo-Croatian" class="interlanguage-link-target"><span>Srpskohrvatski / српскохрватски</span></a></li><li class="interlanguage-link interwiki-fi mw-list-item"><a href="https://fi.wikipedia.org/wiki/Analogiaelektroniikka" title="Analogiaelektroniikka – Finnish" lang="fi" hreflang="fi" data-title="Analogiaelektroniikka" data-language-autonym="Suomi" data-language-local-name="Finnish" class="interlanguage-link-target"><span>Suomi</span></a></li><li class="interlanguage-link interwiki-sv mw-list-item"><a href="https://sv.wikipedia.org/wiki/Analog_elektronik" title="Analog elektronik – Swedish" lang="sv" hreflang="sv" data-title="Analog elektronik" data-language-autonym="Svenska" data-language-local-name="Swedish" class="interlanguage-link-target"><span>Svenska</span></a></li><li class="interlanguage-link interwiki-ta mw-list-item"><a href="https://ta.wikipedia.org/wiki/%E0%AE%A4%E0%AF%8A%E0%AE%9F%E0%AE%B0%E0%AF%8D%E0%AE%AE%E0%AF%81%E0%AE%B1%E0%AF%88_%E0%AE%AE%E0%AE%BF%E0%AE%A9%E0%AF%8D%E0%AE%A9%E0%AE%A3%E0%AF%81_%E0%AE%85%E0%AE%AE%E0%AF%88%E0%AE%AA%E0%AF%8D%E0%AE%AA%E0%AF%81%E0%AE%95%E0%AE%B3%E0%AF%8D" title="தொடர்முறை மின்னணு அமைப்புகள் – Tamil" lang="ta" hreflang="ta" data-title="தொடர்முறை மின்னணு அமைப்புகள்" data-language-autonym="தமிழ்" data-language-local-name="Tamil" class="interlanguage-link-target"><span>தமிழ்</span></a></li><li class="interlanguage-link interwiki-tr mw-list-item"><a href="https://tr.wikipedia.org/wiki/Analog_elektronik" title="Analog elektronik – Turkish" lang="tr" hreflang="tr" data-title="Analog elektronik" data-language-autonym="Türkçe" data-language-local-name="Turkish" class="interlanguage-link-target"><span>Türkçe</span></a></li><li class="interlanguage-link interwiki-uk mw-list-item"><a href="https://uk.wikipedia.org/wiki/%D0%90%D0%BD%D0%B0%D0%BB%D0%BE%D0%B3%D0%BE%D0%B2%D0%B0_%D0%B5%D0%BB%D0%B5%D0%BA%D1%82%D1%80%D0%BE%D0%BD%D1%96%D0%BA%D0%B0" title="Аналогова електроніка – Ukrainian" lang="uk" hreflang="uk" data-title="Аналогова електроніка" data-language-autonym="Українська" data-language-local-name="Ukrainian" class="interlanguage-link-target"><span>Українська</span></a></li><li class="interlanguage-link interwiki-vi mw-list-item"><a href="https://vi.wikipedia.org/wiki/%C4%90i%E1%BB%87n_t%E1%BB%AD_t%C6%B0%C6%A1ng_t%E1%BB%B1" title="Điện tử tương tự – Vietnamese" lang="vi" hreflang="vi" data-title="Điện tử tương tự" data-language-autonym="Tiếng Việt" data-language-local-name="Vietnamese" class="interlanguage-link-target"><span>Tiếng Việt</span></a></li><li class="interlanguage-link interwiki-zh-yue mw-list-item"><a href="https://zh-yue.wikipedia.org/wiki/%E6%A8%A1%E6%93%AC%E9%9B%BB%E8%B7%AF" title="模擬電路 – Cantonese" lang="yue" hreflang="yue" data-title="模擬電路" data-language-autonym="粵語" data-language-local-name="Cantonese" class="interlanguage-link-target"><span>粵語</span></a></li><li class="interlanguage-link interwiki-zh mw-list-item"><a href="https://zh.wikipedia.org/wiki/%E6%A8%A1%E6%8B%9F%E7%94%B5%E8%B7%AF" title="模拟电路 – Chinese" lang="zh" hreflang="zh" data-title="模拟电路" data-language-autonym="中文" data-language-local-name="Chinese" class="interlanguage-link-target"><span>中文</span></a></li> </ul> <div class="after-portlet after-portlet-lang"><span class="wb-langlinks-edit wb-langlinks-link"><a href="https://www.wikidata.org/wiki/Special:EntityPage/Q174925#sitelinks-wikipedia" title="Edit interlanguage links" class="wbc-editpage">Edit links</a></span></div> </div> </div> </div> </header> <div class="vector-page-toolbar"> <div class="vector-page-toolbar-container"> <div id="left-navigation"> <nav aria-label="Namespaces"> <div id="p-associated-pages" class="vector-menu vector-menu-tabs mw-portlet mw-portlet-associated-pages" > <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li id="ca-nstab-main" class="selected vector-tab-noicon mw-list-item"><a href="/wiki/Analogue_electronics" title="View the content page [c]" accesskey="c"><span>Article</span></a></li><li id="ca-talk" class="vector-tab-noicon mw-list-item"><a href="/wiki/Talk:Analogue_electronics" rel="discussion" title="Discuss improvements to the content page [t]" accesskey="t"><span>Talk</span></a></li> </ul> </div> </div> <div id="vector-variants-dropdown" class="vector-dropdown emptyPortlet" > <input type="checkbox" id="vector-variants-dropdown-checkbox" role="button" aria-haspopup="true" data-event-name="ui.dropdown-vector-variants-dropdown" class="vector-dropdown-checkbox " aria-label="Change language variant" > <label id="vector-variants-dropdown-label" for="vector-variants-dropdown-checkbox" class="vector-dropdown-label cdx-button cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--weight-quiet" aria-hidden="true" ><span class="vector-dropdown-label-text">English</span> </label> <div class="vector-dropdown-content"> <div id="p-variants" class="vector-menu mw-portlet mw-portlet-variants emptyPortlet" > <div class="vector-menu-content"> <ul class="vector-menu-content-list"> </ul> </div> </div> </div> </div> </nav> </div> <div id="right-navigation" class="vector-collapsible"> <nav aria-label="Views"> <div id="p-views" class="vector-menu vector-menu-tabs mw-portlet mw-portlet-views" > <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li id="ca-view" class="selected vector-tab-noicon mw-list-item"><a href="/wiki/Analogue_electronics"><span>Read</span></a></li><li id="ca-edit" class="vector-tab-noicon mw-list-item"><a href="/w/index.php?title=Analogue_electronics&action=edit" title="Edit this page [e]" accesskey="e"><span>Edit</span></a></li><li id="ca-history" class="vector-tab-noicon mw-list-item"><a href="/w/index.php?title=Analogue_electronics&action=history" title="Past revisions of this page [h]" accesskey="h"><span>View history</span></a></li> </ul> </div> </div> </nav> <nav class="vector-page-tools-landmark" aria-label="Page tools"> <div id="vector-page-tools-dropdown" class="vector-dropdown vector-page-tools-dropdown" > <input type="checkbox" id="vector-page-tools-dropdown-checkbox" role="button" aria-haspopup="true" data-event-name="ui.dropdown-vector-page-tools-dropdown" class="vector-dropdown-checkbox " aria-label="Tools" > <label id="vector-page-tools-dropdown-label" for="vector-page-tools-dropdown-checkbox" class="vector-dropdown-label cdx-button cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--weight-quiet" aria-hidden="true" ><span class="vector-dropdown-label-text">Tools</span> </label> <div class="vector-dropdown-content"> <div id="vector-page-tools-unpinned-container" class="vector-unpinned-container"> <div id="vector-page-tools" class="vector-page-tools vector-pinnable-element"> <div class="vector-pinnable-header vector-page-tools-pinnable-header vector-pinnable-header-unpinned" data-feature-name="page-tools-pinned" data-pinnable-element-id="vector-page-tools" data-pinned-container-id="vector-page-tools-pinned-container" data-unpinned-container-id="vector-page-tools-unpinned-container" > <div class="vector-pinnable-header-label">Tools</div> <button class="vector-pinnable-header-toggle-button vector-pinnable-header-pin-button" data-event-name="pinnable-header.vector-page-tools.pin">move to sidebar</button> <button class="vector-pinnable-header-toggle-button vector-pinnable-header-unpin-button" data-event-name="pinnable-header.vector-page-tools.unpin">hide</button> </div> <div id="p-cactions" class="vector-menu mw-portlet mw-portlet-cactions emptyPortlet vector-has-collapsible-items" title="More options" > <div class="vector-menu-heading"> Actions </div> <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li id="ca-more-view" class="selected vector-more-collapsible-item mw-list-item"><a href="/wiki/Analogue_electronics"><span>Read</span></a></li><li id="ca-more-edit" class="vector-more-collapsible-item mw-list-item"><a href="/w/index.php?title=Analogue_electronics&action=edit" title="Edit this page [e]" accesskey="e"><span>Edit</span></a></li><li id="ca-more-history" class="vector-more-collapsible-item mw-list-item"><a href="/w/index.php?title=Analogue_electronics&action=history"><span>View history</span></a></li> </ul> </div> </div> <div id="p-tb" class="vector-menu mw-portlet mw-portlet-tb" > <div class="vector-menu-heading"> General </div> <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li id="t-whatlinkshere" class="mw-list-item"><a href="/wiki/Special:WhatLinksHere/Analogue_electronics" title="List of all English Wikipedia pages containing links to this page [j]" accesskey="j"><span>What links here</span></a></li><li id="t-recentchangeslinked" class="mw-list-item"><a href="/wiki/Special:RecentChangesLinked/Analogue_electronics" rel="nofollow" title="Recent changes in pages linked from this page [k]" accesskey="k"><span>Related changes</span></a></li><li id="t-upload" class="mw-list-item"><a href="/wiki/Wikipedia:File_Upload_Wizard" title="Upload files [u]" accesskey="u"><span>Upload file</span></a></li><li id="t-specialpages" class="mw-list-item"><a href="/wiki/Special:SpecialPages" title="A list of all special pages [q]" accesskey="q"><span>Special pages</span></a></li><li id="t-permalink" class="mw-list-item"><a href="/w/index.php?title=Analogue_electronics&oldid=1255948808" title="Permanent link to this revision of this page"><span>Permanent link</span></a></li><li id="t-info" class="mw-list-item"><a href="/w/index.php?title=Analogue_electronics&action=info" title="More information about this page"><span>Page information</span></a></li><li id="t-cite" class="mw-list-item"><a href="/w/index.php?title=Special:CiteThisPage&page=Analogue_electronics&id=1255948808&wpFormIdentifier=titleform" title="Information on how to cite this page"><span>Cite this page</span></a></li><li id="t-urlshortener" class="mw-list-item"><a href="/w/index.php?title=Special:UrlShortener&url=https%3A%2F%2Fen.wikipedia.org%2Fwiki%2FAnalogue_electronics"><span>Get shortened URL</span></a></li><li id="t-urlshortener-qrcode" class="mw-list-item"><a href="/w/index.php?title=Special:QrCode&url=https%3A%2F%2Fen.wikipedia.org%2Fwiki%2FAnalogue_electronics"><span>Download QR code</span></a></li> </ul> </div> </div> <div id="p-coll-print_export" class="vector-menu mw-portlet mw-portlet-coll-print_export" > <div class="vector-menu-heading"> Print/export </div> <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li id="coll-download-as-rl" class="mw-list-item"><a href="/w/index.php?title=Special:DownloadAsPdf&page=Analogue_electronics&action=show-download-screen" title="Download this page as a PDF file"><span>Download as PDF</span></a></li><li id="t-print" class="mw-list-item"><a href="/w/index.php?title=Analogue_electronics&printable=yes" title="Printable version of this page [p]" accesskey="p"><span>Printable version</span></a></li> </ul> </div> </div> <div id="p-wikibase-otherprojects" class="vector-menu mw-portlet mw-portlet-wikibase-otherprojects" > <div class="vector-menu-heading"> In other projects </div> <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li class="wb-otherproject-link wb-otherproject-commons mw-list-item"><a href="https://commons.wikimedia.org/wiki/Category:Analog_electronics" hreflang="en"><span>Wikimedia Commons</span></a></li><li class="wb-otherproject-link wb-otherproject-wikibooks mw-list-item"><a href="https://en.wikibooks.org/wiki/Analogue_Electronics" hreflang="en"><span>Wikibooks</span></a></li><li class="wb-otherproject-link wb-otherproject-wikiversity mw-list-item"><a href="https://en.wikiversity.org/wiki/Analog_electronics" hreflang="en"><span>Wikiversity</span></a></li><li id="t-wikibase" class="wb-otherproject-link wb-otherproject-wikibase-dataitem mw-list-item"><a href="https://www.wikidata.org/wiki/Special:EntityPage/Q174925" title="Structured data on this page hosted by Wikidata [g]" accesskey="g"><span>Wikidata item</span></a></li> </ul> </div> </div> </div> </div> </div> </div> </nav> </div> </div> </div> <div class="vector-column-end"> <div class="vector-sticky-pinned-container"> <nav class="vector-page-tools-landmark" aria-label="Page tools"> <div id="vector-page-tools-pinned-container" class="vector-pinned-container"> </div> </nav> <nav class="vector-appearance-landmark" aria-label="Appearance"> <div id="vector-appearance-pinned-container" class="vector-pinned-container"> <div id="vector-appearance" class="vector-appearance vector-pinnable-element"> <div class="vector-pinnable-header vector-appearance-pinnable-header vector-pinnable-header-pinned" data-feature-name="appearance-pinned" data-pinnable-element-id="vector-appearance" data-pinned-container-id="vector-appearance-pinned-container" data-unpinned-container-id="vector-appearance-unpinned-container" > <div class="vector-pinnable-header-label">Appearance</div> <button class="vector-pinnable-header-toggle-button vector-pinnable-header-pin-button" data-event-name="pinnable-header.vector-appearance.pin">move to sidebar</button> <button class="vector-pinnable-header-toggle-button vector-pinnable-header-unpin-button" data-event-name="pinnable-header.vector-appearance.unpin">hide</button> </div> </div> </div> </nav> </div> </div> <div id="bodyContent" class="vector-body" aria-labelledby="firstHeading" data-mw-ve-target-container> <div class="vector-body-before-content"> <div class="mw-indicators"> </div> <div id="siteSub" class="noprint">From Wikipedia, the free encyclopedia</div> </div> <div id="contentSub"><div id="mw-content-subtitle"><span class="mw-redirectedfrom">(Redirected from <a href="/w/index.php?title=Analog_circuit&redirect=no" class="mw-redirect" title="Analog circuit">Analog circuit</a>)</span></div></div> <div id="mw-content-text" class="mw-body-content"><div class="mw-content-ltr mw-parser-output" lang="en" dir="ltr"><div class="shortdescription nomobile noexcerpt noprint searchaux" style="display:none">Electronic systems with a continuously variable signal</div> <p class="mw-empty-elt"> </p> <div class="thumb tright" style=""><div class="thumbinner" style="width:202px"><div class="thumbimage noresize" style="width:200px;"> <span typeof="mw:File"><a href="/wiki/File:Kennline_NTC.png" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/4/4e/Kennline_NTC.png/200px-Kennline_NTC.png" decoding="async" width="200" height="200" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/4/4e/Kennline_NTC.png/300px-Kennline_NTC.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/4/4e/Kennline_NTC.png/400px-Kennline_NTC.png 2x" data-file-width="1181" data-file-height="1181" /></a></span><span typeof="mw:File"><a href="/wiki/File:Termistor_sonda.jpg" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/c/c2/Termistor_sonda.jpg/180px-Termistor_sonda.jpg" decoding="async" width="180" height="150" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/c/c2/Termistor_sonda.jpg 1.5x" data-file-width="219" data-file-height="182" /></a></span></div><div class="thumbcaption">Analogue electronic components like this <a href="/wiki/Thermistor" title="Thermistor">thermistor</a> function with <a href="/wiki/Continuous_function" title="Continuous function">continuous</a> signals, unlike <a href="/wiki/Digital_electronics" title="Digital electronics">digital electronics</a> which have <a href="/wiki/Digital_signal" title="Digital signal">discrete signals</a>, usually <a href="/wiki/Binary_code" title="Binary code">binary code</a></div></div></div> <p><b>Analogue electronics</b> (<a href="/wiki/American_English_language" class="mw-redirect" title="American English language">American English</a>: <span lang="en-US"><b>analog electronics</b></span>) are <a href="/wiki/Electronics" title="Electronics">electronic</a> systems with a <a href="/wiki/Continuous_function" title="Continuous function">continuously</a> variable signal, in contrast to <a href="/wiki/Digital_electronics" title="Digital electronics">digital electronics</a> where signals usually take <a href="/wiki/Binary_code" title="Binary code">only two levels</a>. The term <i>analogue</i> describes the proportional relationship between a signal and a voltage or current that represents the signal. The word <i>analogue</i> is derived from the Greek word <span title="Ancient Greek (to 1453)-language text"><span lang="grc">ανάλογος</span></span> <span title="Ancient Greek (to 1453)-language text"><i lang="grc-Latn">analogos</i></span> meaning <i>proportional</i>.<sup id="cite_ref-1" class="reference"><a href="#cite_note-1"><span class="cite-bracket">[</span>1<span class="cite-bracket">]</span></a></sup> </p> <meta property="mw:PageProp/toc" /> <div class="mw-heading mw-heading2"><h2 id="Analogue_signals">Analogue signals</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Analogue_electronics&action=edit&section=1" title="Edit section: Analogue signals"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>An <a href="/wiki/Analogue_signal" class="mw-redirect" title="Analogue signal">analogue signal</a> uses some attribute of the medium to convey the signal's information. For example, an <a href="/wiki/Aneroid_barometer" class="mw-redirect" title="Aneroid barometer">aneroid barometer</a> uses the <a href="/wiki/Angular_position" class="mw-redirect" title="Angular position">angular position</a> of a needle on top of a contracting and expanding box as the signal to convey the information of changes in <a href="/wiki/Atmospheric_pressure" title="Atmospheric pressure">atmospheric pressure</a>.<sup id="cite_ref-2" class="reference"><a href="#cite_note-2"><span class="cite-bracket">[</span>2<span class="cite-bracket">]</span></a></sup> Electrical signals may represent information by changing their <a href="/wiki/Voltage" title="Voltage">voltage</a>, <a href="/wiki/Current_source" title="Current source">current</a>, <a href="/wiki/Frequency" title="Frequency">frequency</a>, or total <a href="/wiki/Electric_charge" title="Electric charge">charge</a>. Information is converted from some other physical form (such as <a href="/wiki/Sound" title="Sound">sound</a>, <a href="/wiki/Light" title="Light">light</a>, <a href="/wiki/Temperature" title="Temperature">temperature</a>, <a href="/wiki/Pressure" title="Pressure">pressure</a>, position) to an electrical signal by a <a href="/wiki/Transducer" title="Transducer">transducer</a> which converts one type of energy into another (e.g. a <a href="/wiki/Microphone" title="Microphone">microphone</a>).<sup id="cite_ref-3" class="reference"><a href="#cite_note-3"><span class="cite-bracket">[</span>3<span class="cite-bracket">]</span></a></sup> </p><p>The signals take any value from a given range, and each unique signal value represents different information. Any change in the signal is meaningful, and each level of the signal represents a different level of the phenomenon that it represents. For example, suppose the signal is being used to represent temperature, with one <a href="/wiki/Volt" title="Volt">volt</a> representing one degree <a href="/wiki/Celsius" title="Celsius">Celsius</a>. In such a system, 10 volts would represent 10 degrees, and 10.1 volts would represent 10.1 degrees. </p><p>Another method of conveying an analogue signal is to use <a href="/wiki/Modulation" title="Modulation">modulation</a>. In this, some base <a href="/wiki/Carrier_signal" class="mw-redirect" title="Carrier signal">carrier signal</a> has one of its properties altered: <a href="/wiki/Amplitude_modulation" title="Amplitude modulation">amplitude modulation</a> (AM) involves altering the amplitude of a sinusoidal voltage waveform by the source information, <a href="/wiki/Frequency_modulation" title="Frequency modulation">frequency modulation</a> (FM) changes the frequency. Other techniques, such as <a href="/wiki/Phase_modulation" title="Phase modulation">phase modulation</a> or changing the phase of the carrier signal, are also used.<sup id="cite_ref-4" class="reference"><a href="#cite_note-4"><span class="cite-bracket">[</span>4<span class="cite-bracket">]</span></a></sup> </p><p>In an analogue sound recording, the variation in pressure of a sound striking a <a href="/wiki/Microphone" title="Microphone">microphone</a> creates a corresponding variation in the current passing through it or voltage across it. An increase in the volume of the sound causes the fluctuation of the current or voltage to increase proportionally while keeping the same <a href="/wiki/Waveform" title="Waveform">waveform</a> or shape. </p><p><a href="/wiki/Mechanics" title="Mechanics">Mechanical</a>, <a href="/wiki/Pneumatic" class="mw-redirect" title="Pneumatic">pneumatic</a>, <a href="/wiki/Hydraulic" class="mw-redirect" title="Hydraulic">hydraulic</a>, and other systems may also use analogue signals. </p> <div class="mw-heading mw-heading2"><h2 id="Inherent_noise">Inherent noise</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Analogue_electronics&action=edit&section=2" title="Edit section: Inherent noise"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>Analogue systems invariably include <a href="/wiki/Noise_(electronics)" title="Noise (electronics)">noise</a> that is random disturbances or variations, some caused by the <a href="/wiki/Johnson%E2%80%93Nyquist_noise" title="Johnson–Nyquist noise">random thermal vibrations</a> of atomic particles. Since all variations of an analogue signal are significant, any disturbance is equivalent to a change in the original signal and so appears as noise.<sup id="cite_ref-5" class="reference"><a href="#cite_note-5"><span class="cite-bracket">[</span>5<span class="cite-bracket">]</span></a></sup> As the signal is copied and re-copied, or transmitted over long distances, these random variations become more significant and lead to <a href="/wiki/Signal-to-noise_ratio" title="Signal-to-noise ratio">signal degradation</a>. Other sources of noise may include <a href="/wiki/Crosstalk" title="Crosstalk">crosstalk</a> from other signals or poorly designed components. These disturbances are reduced by <a href="/wiki/Electromagnetic_shielding" title="Electromagnetic shielding">shielding</a> and by using <a href="/wiki/Low-noise_amplifier" title="Low-noise amplifier">low-noise amplifiers</a> (LNA).<sup id="cite_ref-6" class="reference"><a href="#cite_note-6"><span class="cite-bracket">[</span>6<span class="cite-bracket">]</span></a></sup> </p> <div class="mw-heading mw-heading2"><h2 id="Analogue_vs_digital_electronics">Analogue vs digital electronics</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Analogue_electronics&action=edit&section=3" title="Edit section: Analogue vs digital electronics"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <figure class="mw-default-size" typeof="mw:File/Thumb"><a href="/wiki/File:USB_signal_example.svg" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/e/e0/USB_signal_example.svg/220px-USB_signal_example.svg.png" decoding="async" width="220" height="90" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/e/e0/USB_signal_example.svg/330px-USB_signal_example.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/e/e0/USB_signal_example.svg/440px-USB_signal_example.svg.png 2x" data-file-width="581" data-file-height="237" /></a><figcaption>A digital signal like <a href="/wiki/USB_(Communications)" class="mw-redirect" title="USB (Communications)">USB</a> is inherently an analogue signal</figcaption></figure> <p>Since the information is encoded differently in analogue and <a href="/wiki/Digital_electronics" title="Digital electronics">digital electronics</a>, the way they process a signal is consequently different. All operations that can be performed on an analogue signal such as <a href="/wiki/Amplifier" title="Amplifier">amplification</a>, <a href="/wiki/Electronic_filter" title="Electronic filter">filtering</a>, limiting, and others, can also be duplicated in the digital domain. Every digital circuit is also an analogue circuit, in that the behaviour of any digital circuit can be explained using the rules of analogue circuits. </p><p>The use of <a href="/wiki/Microelectronics" title="Microelectronics">microelectronics</a> has made digital devices cheap and widely available. </p> <div class="mw-heading mw-heading3"><h3 id="Noise">Noise</h3><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Analogue_electronics&action=edit&section=4" title="Edit section: Noise"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>The effect of <a href="/wiki/Noise_(electronics)" title="Noise (electronics)">noise</a> on an analogue circuit is a function of the <a href="/wiki/Level_(logarithmic_quantity)" title="Level (logarithmic quantity)">level</a> of noise. The greater the noise level, the more the analogue signal is disturbed, slowly becoming less usable. Because of this, analogue signals are said to "fail gracefully". Analogue signals can still contain intelligible information with very high levels of noise. Digital circuits, on the other hand, are not affected at all by the presence of noise until a certain threshold is reached, at which point they fail catastrophically. For digital <a href="/wiki/Telecommunications" title="Telecommunications">telecommunications</a>, it is possible to increase the noise threshold with the use of <a href="/wiki/Error_detection_and_correction" title="Error detection and correction">error detection and correction</a> coding schemes and algorithms. Nevertheless, there is still a point at which catastrophic failure of the link occurs.<sup id="cite_ref-7" class="reference"><a href="#cite_note-7"><span class="cite-bracket">[</span>7<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-8" class="reference"><a href="#cite_note-8"><span class="cite-bracket">[</span>8<span class="cite-bracket">]</span></a></sup> </p><p>In digital electronics, because the information is <a href="/wiki/Quantization_(signal_processing)" title="Quantization (signal processing)">quantized</a>, as long as the signal stays inside a range of values, it represents the same information. In digital circuits the signal is regenerated at each <a href="/wiki/Logic_gate" title="Logic gate">logic gate</a>, lessening or removing noise.<sup id="cite_ref-9" class="reference"><a href="#cite_note-9"><span class="cite-bracket">[</span>9<span class="cite-bracket">]</span></a></sup><sup class="noprint Inline-Template" style="white-space:nowrap;">[<i><a href="/wiki/Wikipedia:Verifiability" title="Wikipedia:Verifiability"><span title="The material near this tag failed verification of its source citation(s). (April 2018)">failed verification</span></a></i>]</sup> In analogue circuits, signal loss can be regenerated with <a href="/wiki/Amplifier" title="Amplifier">amplifiers</a>. However, noise is cumulative throughout the system and the amplifier itself will add to the noise according to its <a href="/wiki/Noise_figure" title="Noise figure">noise figure</a>.<sup id="cite_ref-10" class="reference"><a href="#cite_note-10"><span class="cite-bracket">[</span>10<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-11" class="reference"><a href="#cite_note-11"><span class="cite-bracket">[</span>11<span class="cite-bracket">]</span></a></sup> </p> <div class="mw-heading mw-heading3"><h3 id="Precision">Precision</h3><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Analogue_electronics&action=edit&section=5" title="Edit section: Precision"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>A number of factors affect how precise a signal is, mainly the noise present in the original signal and the noise added by processing (see <a href="/wiki/Signal-to-noise_ratio" title="Signal-to-noise ratio">signal-to-noise ratio</a>). Fundamental physical limits such as the <a href="/wiki/Shot_noise" title="Shot noise">shot noise</a> in components limits the resolution of analogue signals. In digital electronics additional precision is obtained by using additional digits to represent the signal. The practical limit in the number of digits is determined by the performance of the <a href="/wiki/Analogue-to-digital_converter" class="mw-redirect" title="Analogue-to-digital converter">analogue-to-digital converter</a> (ADC), since digital operations can usually be performed without loss of precision. The ADC takes an analogue signal and changes it into a series of <a href="/wiki/Binary_number" title="Binary number">binary numbers</a>. The ADC may be used in simple digital display devices, e. g., thermometers or light meters but it may also be used in digital sound recording and in data acquisition. However, a <a href="/wiki/Digital-to-analogue_converter" class="mw-redirect" title="Digital-to-analogue converter">digital-to-analogue converter</a> (DAC) is used to change a digital signal to an analogue signal. A DAC takes a series of binary numbers and converts it to an analogue signal. It is common to find a DAC in the gain-control system of an <a href="/wiki/Op-amp" class="mw-redirect" title="Op-amp">op-amp</a> which in turn may be used to control digital amplifiers and filters.<sup id="cite_ref-12" class="reference"><a href="#cite_note-12"><span class="cite-bracket">[</span>12<span class="cite-bracket">]</span></a></sup> </p> <div class="mw-heading mw-heading3"><h3 id="Design_difficulty">Design difficulty</h3><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Analogue_electronics&action=edit&section=6" title="Edit section: Design difficulty"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>Analogue circuits are typically harder to design, requiring more skill than comparable digital systems to conceptualize.<sup id="cite_ref-13" class="reference"><a href="#cite_note-13"><span class="cite-bracket">[</span>13<span class="cite-bracket">]</span></a></sup> An analogue circuit is usually designed by hand because the application is built into the hardware. Digital hardware, on the other hand, has a great deal of commonality across applications and can be mass-produced in a standardised form. Hardware design consists largely of repeated identical blocks and the design process can be highly automated. This is one of the main reasons that digital systems have become more common than analogue devices. However, the application of digital hardware is a function of the <a href="/wiki/Software" title="Software">software</a>/<a href="/wiki/Firmware" title="Firmware">firmware</a> and creating this is still largely a labour-intensive process. Since the early 2000s, there were some platforms that were developed which enabled analogue design to be defined using software - which allows faster prototyping. Furthermore, if a digital electronic device is to interact with the real world, it will always need an analogue interface.<sup id="cite_ref-14" class="reference"><a href="#cite_note-14"><span class="cite-bracket">[</span>14<span class="cite-bracket">]</span></a></sup> For example, every <a href="/wiki/Digital_radio" title="Digital radio">digital radio</a> receiver has an analogue preamplifier as the first stage in the receive chain. </p><p>Design of analogue circuits has been greatly eased by the advent of software circuit simulators such as <a href="/wiki/SPICE" title="SPICE">SPICE</a>. IBM developed their own in-house simulator, <a href="/wiki/ASTAP" title="ASTAP">ASTAP</a>, in the 1970s which used an unusual (compared to other simulators) <a href="/wiki/Sparse_matrix" title="Sparse matrix">sparse matrix</a> method of circuit analysis. </p> <div class="mw-heading mw-heading2"><h2 id="Circuit_classification">Circuit classification</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Analogue_electronics&action=edit&section=7" title="Edit section: Circuit classification"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <style data-mw-deduplicate="TemplateStyles:r1236090951">.mw-parser-output .hatnote{font-style:italic}.mw-parser-output div.hatnote{padding-left:1.6em;margin-bottom:0.5em}.mw-parser-output .hatnote i{font-style:normal}.mw-parser-output .hatnote+link+.hatnote{margin-top:-0.5em}@media print{body.ns-0 .mw-parser-output .hatnote{display:none!important}}</style><div role="note" class="hatnote navigation-not-searchable">For broader coverage of this topic, see <a href="/wiki/Electronic_circuit" title="Electronic circuit">Electronic circuit</a>.</div> <p>Analogue circuits can be entirely <a href="/wiki/Passivity_(engineering)" title="Passivity (engineering)">passive</a>, consisting of <a href="/wiki/Resistor" title="Resistor">resistors</a>, <a href="/wiki/Capacitor" title="Capacitor">capacitors</a> and <a href="/wiki/Inductor" title="Inductor">inductors</a>. Active circuits also contain active elements such as <a href="/wiki/Transistor" title="Transistor">transistors</a>. Traditional circuits are built from <a href="/wiki/Lumped-element_model" title="Lumped-element model">lumped</a> elements – that is, discrete components. However, an alternative is <a href="/wiki/Distributed-element_circuit" title="Distributed-element circuit">distributed-element circuits</a>, built from pieces of <a href="/wiki/Transmission_line" title="Transmission line">transmission line</a>. </p> <div class="mw-heading mw-heading2"><h2 id="See_also">See also</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Analogue_electronics&action=edit&section=8" title="Edit section: See also"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <ul><li><a href="/wiki/Analogue_computer" class="mw-redirect" title="Analogue computer">Analogue computer</a></li> <li><a href="/wiki/Analogue_verification" class="mw-redirect" title="Analogue verification">Analogue verification</a></li> <li><a href="/wiki/Comparison_of_analogue_and_digital_recording" class="mw-redirect" title="Comparison of analogue and digital recording">Comparison of analogue and digital recording</a></li> <li><a href="/wiki/Digital_data" title="Digital data">Digital data</a>, in contrast to analogue</li> <li><a href="/wiki/Linear_integrated_circuit" title="Linear integrated circuit">Linear integrated circuit</a>, an analogue chip</li></ul> <div class="mw-heading mw-heading2"><h2 id="References">References</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Analogue_electronics&action=edit&section=9" title="Edit section: References"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <style data-mw-deduplicate="TemplateStyles:r1239543626">.mw-parser-output .reflist{margin-bottom:0.5em;list-style-type:decimal}@media screen{.mw-parser-output .reflist{font-size:90%}}.mw-parser-output .reflist .references{font-size:100%;margin-bottom:0;list-style-type:inherit}.mw-parser-output .reflist-columns-2{column-width:30em}.mw-parser-output .reflist-columns-3{column-width:25em}.mw-parser-output .reflist-columns{margin-top:0.3em}.mw-parser-output .reflist-columns ol{margin-top:0}.mw-parser-output .reflist-columns li{page-break-inside:avoid;break-inside:avoid-column}.mw-parser-output .reflist-upper-alpha{list-style-type:upper-alpha}.mw-parser-output .reflist-upper-roman{list-style-type:upper-roman}.mw-parser-output .reflist-lower-alpha{list-style-type:lower-alpha}.mw-parser-output .reflist-lower-greek{list-style-type:lower-greek}.mw-parser-output .reflist-lower-roman{list-style-type:lower-roman}</style><div class="reflist"> <div class="mw-references-wrap mw-references-columns"><ol class="references"> <li id="cite_note-1"><span class="mw-cite-backlink"><b><a href="#cite_ref-1">^</a></b></span> <span class="reference-text"><style data-mw-deduplicate="TemplateStyles:r1238218222">.mw-parser-output cite.citation{font-style:inherit;word-wrap:break-word}.mw-parser-output .citation q{quotes:"\"""\"""'""'"}.mw-parser-output .citation:target{background-color:rgba(0,127,255,0.133)}.mw-parser-output .id-lock-free.id-lock-free a{background:url("//upload.wikimedia.org/wikipedia/commons/6/65/Lock-green.svg")right 0.1em center/9px no-repeat}.mw-parser-output .id-lock-limited.id-lock-limited a,.mw-parser-output .id-lock-registration.id-lock-registration a{background:url("//upload.wikimedia.org/wikipedia/commons/d/d6/Lock-gray-alt-2.svg")right 0.1em center/9px no-repeat}.mw-parser-output .id-lock-subscription.id-lock-subscription a{background:url("//upload.wikimedia.org/wikipedia/commons/a/aa/Lock-red-alt-2.svg")right 0.1em center/9px no-repeat}.mw-parser-output .cs1-ws-icon a{background:url("//upload.wikimedia.org/wikipedia/commons/4/4c/Wikisource-logo.svg")right 0.1em center/12px no-repeat}body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .id-lock-free a,body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .id-lock-limited a,body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .id-lock-registration a,body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .id-lock-subscription a,body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .cs1-ws-icon a{background-size:contain;padding:0 1em 0 0}.mw-parser-output .cs1-code{color:inherit;background:inherit;border:none;padding:inherit}.mw-parser-output .cs1-hidden-error{display:none;color:var(--color-error,#d33)}.mw-parser-output .cs1-visible-error{color:var(--color-error,#d33)}.mw-parser-output .cs1-maint{display:none;color:#085;margin-left:0.3em}.mw-parser-output .cs1-kern-left{padding-left:0.2em}.mw-parser-output .cs1-kern-right{padding-right:0.2em}.mw-parser-output .citation .mw-selflink{font-weight:inherit}@media screen{.mw-parser-output .cs1-format{font-size:95%}html.skin-theme-clientpref-night .mw-parser-output .cs1-maint{color:#18911f}}@media screen and (prefers-color-scheme:dark){html.skin-theme-clientpref-os .mw-parser-output .cs1-maint{color:#18911f}}</style><cite class="citation book cs1"><i>Concise Oxford dictionary</i> (10 ed.). Oxford University Press Inc. 1999. <a href="/wiki/ISBN_(identifier)" class="mw-redirect" title="ISBN (identifier)">ISBN</a> <a href="/wiki/Special:BookSources/0-19-860287-1" title="Special:BookSources/0-19-860287-1"><bdi>0-19-860287-1</bdi></a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=book&rft.btitle=Concise+Oxford+dictionary&rft.edition=10&rft.pub=Oxford+University+Press+Inc.&rft.date=1999&rft.isbn=0-19-860287-1&rfr_id=info%3Asid%2Fen.wikipedia.org%3AAnalogue+electronics" class="Z3988"></span></span> </li> <li id="cite_note-2"><span class="mw-cite-backlink"><b><a href="#cite_ref-2">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFPlympton1884" class="citation book cs1">Plympton, George Washington (1884). <a rel="nofollow" class="external text" href="https://archive.org/details/aneroidbaromete00plymgoog"><i>The aneroid barometer: its construction and use</i></a>. D. Van Nostran Co. <q>aneroid barometer.</q></cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=book&rft.btitle=The+aneroid+barometer%3A+its+construction+and+use&rft.pub=D.+Van+Nostran+Co.&rft.date=1884&rft.aulast=Plympton&rft.aufirst=George+Washington&rft_id=https%3A%2F%2Farchive.org%2Fdetails%2Faneroidbaromete00plymgoog&rfr_id=info%3Asid%2Fen.wikipedia.org%3AAnalogue+electronics" class="Z3988"></span></span> </li> <li id="cite_note-3"><span class="mw-cite-backlink"><b><a href="#cite_ref-3">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFSingmin2001" class="citation book cs1">Singmin, Andrew (2001). <a rel="nofollow" class="external text" href="https://books.google.com/books?id=av_37zMG5H4C&q=analogue+electronics+transducer&pg=PA9"><i>Beginning Digital Electronics Through Projects</i></a>. Newnes. p. 9. <a href="/wiki/ISBN_(identifier)" class="mw-redirect" title="ISBN (identifier)">ISBN</a> <a href="/wiki/Special:BookSources/0-7506-7269-2" title="Special:BookSources/0-7506-7269-2"><bdi>0-7506-7269-2</bdi></a>. <q>Signals come from transducers...</q></cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=book&rft.btitle=Beginning+Digital+Electronics+Through+Projects&rft.pages=9&rft.pub=Newnes&rft.date=2001&rft.isbn=0-7506-7269-2&rft.aulast=Singmin&rft.aufirst=Andrew&rft_id=https%3A%2F%2Fbooks.google.com%2Fbooks%3Fid%3Dav_37zMG5H4C%26q%3Danalogue%2Belectronics%2Btransducer%26pg%3DPA9&rfr_id=info%3Asid%2Fen.wikipedia.org%3AAnalogue+electronics" class="Z3988"></span></span> </li> <li id="cite_note-4"><span class="mw-cite-backlink"><b><a href="#cite_ref-4">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFMiller2002" class="citation book cs1">Miller, Mark R. (2002). <span class="id-lock-registration" title="Free registration required"><a rel="nofollow" class="external text" href="https://archive.org/details/electronicseasyw0004mill"><i>Electronics the Easy Way</i></a></span>. Barron's Educational Series. pp. <a rel="nofollow" class="external text" href="https://archive.org/details/electronicseasyw0004mill/page/232">232</a>–239. <a href="/wiki/ISBN_(identifier)" class="mw-redirect" title="ISBN (identifier)">ISBN</a> <a href="/wiki/Special:BookSources/0-7641-1981-8" title="Special:BookSources/0-7641-1981-8"><bdi>0-7641-1981-8</bdi></a>. <q>Until the radio came along...</q></cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=book&rft.btitle=Electronics+the+Easy+Way&rft.pages=232-239&rft.pub=Barron%27s+Educational+Series&rft.date=2002&rft.isbn=0-7641-1981-8&rft.aulast=Miller&rft.aufirst=Mark+R.&rft_id=https%3A%2F%2Farchive.org%2Fdetails%2Felectronicseasyw0004mill&rfr_id=info%3Asid%2Fen.wikipedia.org%3AAnalogue+electronics" class="Z3988"></span></span> </li> <li id="cite_note-5"><span class="mw-cite-backlink"><b><a href="#cite_ref-5">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFHsu2003" class="citation book cs1">Hsu, Hwei Piao (2003). <a rel="nofollow" class="external text" href="https://books.google.com/books?id=02I-J_ZQa50C&q=analogue+system+noise&pg=PA202"><i>Schaum's Outline of Theory and Problems of Analogue and Digital Communications</i></a>. McGraw-Hill Professional. p. 202. <a href="/wiki/ISBN_(identifier)" class="mw-redirect" title="ISBN (identifier)">ISBN</a> <a href="/wiki/Special:BookSources/0-07-140228-4" title="Special:BookSources/0-07-140228-4"><bdi>0-07-140228-4</bdi></a>. <q>The presence of noise degrades the performance of communication systems.</q></cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=book&rft.btitle=Schaum%27s+Outline+of+Theory+and+Problems+of+Analogue+and+Digital+Communications&rft.pages=202&rft.pub=McGraw-Hill+Professional&rft.date=2003&rft.isbn=0-07-140228-4&rft.aulast=Hsu&rft.aufirst=Hwei+Piao&rft_id=https%3A%2F%2Fbooks.google.com%2Fbooks%3Fid%3D02I-J_ZQa50C%26q%3Danalogue%2Bsystem%2Bnoise%26pg%3DPA202&rfr_id=info%3Asid%2Fen.wikipedia.org%3AAnalogue+electronics" class="Z3988"></span></span> </li> <li id="cite_note-6"><span class="mw-cite-backlink"><b><a href="#cite_ref-6">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFCarr2000" class="citation book cs1">Carr, Joseph J. (2000). <a rel="nofollow" class="external text" href="https://books.google.com/books?id=begI88-yUBwC&q=low+noise+amplifiers&pg=PA423"><i>Secrets of RF circuit design</i></a>. McGraw-Hill Professional. p. 423. <a href="/wiki/ISBN_(identifier)" class="mw-redirect" title="ISBN (identifier)">ISBN</a> <a href="/wiki/Special:BookSources/0-07-137067-6" title="Special:BookSources/0-07-137067-6"><bdi>0-07-137067-6</bdi></a>. <q>It is common in microwave systems...</q></cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=book&rft.btitle=Secrets+of+RF+circuit+design&rft.pages=423&rft.pub=McGraw-Hill+Professional&rft.date=2000&rft.isbn=0-07-137067-6&rft.aulast=Carr&rft.aufirst=Joseph+J.&rft_id=https%3A%2F%2Fbooks.google.com%2Fbooks%3Fid%3DbegI88-yUBwC%26q%3Dlow%2Bnoise%2Bamplifiers%26pg%3DPA423&rfr_id=info%3Asid%2Fen.wikipedia.org%3AAnalogue+electronics" class="Z3988"></span></span> </li> <li id="cite_note-7"><span class="mw-cite-backlink"><b><a href="#cite_ref-7">^</a></b></span> <span class="reference-text">Richard Langton Gregory, <i>Even Odder Perceptions</i>, p. 161, Psychology Press, 1994 <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><a href="/wiki/ISBN_(identifier)" class="mw-redirect" title="ISBN (identifier)">ISBN</a> <a href="/wiki/Special:BookSources/0415061067" title="Special:BookSources/0415061067">0415061067</a>.</span> </li> <li id="cite_note-8"><span class="mw-cite-backlink"><b><a href="#cite_ref-8">^</a></b></span> <span class="reference-text">Robin Blair, <i>Digital Techniques in Broadcasting Transmission</i>, p. 34, Focal Press, 2002, <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><a href="/wiki/ISBN_(identifier)" class="mw-redirect" title="ISBN (identifier)">ISBN</a> <a href="/wiki/Special:BookSources/0240805089" title="Special:BookSources/0240805089">0240805089</a>.</span> </li> <li id="cite_note-9"><span class="mw-cite-backlink"><b><a href="#cite_ref-9">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFChen2005" class="citation book cs1">Chen, Wai-Kai (2005). <a rel="nofollow" class="external text" href="https://books.google.com/books?id=qhHsSlazGrQC&q=analog-digital+noise&pg=PA101"><i>The electrical engineering handbook</i></a>. Academic Press. p. 101. <a href="/wiki/ISBN_(identifier)" class="mw-redirect" title="ISBN (identifier)">ISBN</a> <a href="/wiki/Special:BookSources/0-12-170960-4" title="Special:BookSources/0-12-170960-4"><bdi>0-12-170960-4</bdi></a>. <q>Noise from an analogue (or small-signal) perspective...</q></cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=book&rft.btitle=The+electrical+engineering+handbook&rft.pages=101&rft.pub=Academic+Press&rft.date=2005&rft.isbn=0-12-170960-4&rft.aulast=Chen&rft.aufirst=Wai-Kai&rft_id=https%3A%2F%2Fbooks.google.com%2Fbooks%3Fid%3DqhHsSlazGrQC%26q%3Danalog-digital%2Bnoise%26pg%3DPA101&rfr_id=info%3Asid%2Fen.wikipedia.org%3AAnalogue+electronics" class="Z3988"></span></span> </li> <li id="cite_note-10"><span class="mw-cite-backlink"><b><a href="#cite_ref-10">^</a></b></span> <span class="reference-text">Jon B. Hagen, <i>Radio-Frequency Electronics: Circuits and Applications</i>, p. 203, Cambridge University Press, 1996 <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><a href="/wiki/ISBN_(identifier)" class="mw-redirect" title="ISBN (identifier)">ISBN</a> <a href="/wiki/Special:BookSources/0521553563" title="Special:BookSources/0521553563">0521553563</a>.</span> </li> <li id="cite_note-11"><span class="mw-cite-backlink"><b><a href="#cite_ref-11">^</a></b></span> <span class="reference-text">Jonathan Davidson, James Peters, Brian Gracely, <i>Voice Over IP Fundamentals</i>, Cisco Press, 2000 <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><a href="/wiki/ISBN_(identifier)" class="mw-redirect" title="ISBN (identifier)">ISBN</a> <a href="/wiki/Special:BookSources/1578701686" title="Special:BookSources/1578701686">1578701686</a>.</span> </li> <li id="cite_note-12"><span class="mw-cite-backlink"><b><a href="#cite_ref-12">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFScherz2006" class="citation book cs1">Scherz, Paul (2006). <a rel="nofollow" class="external text" href="https://books.google.com/books?id=nMBtypLEdqgC&q=analog+to+digital+converter&pg=PA730"><i>Practical electronics for inventors</i></a>. McGraw-Hill Professional. p. 730. <a href="/wiki/ISBN_(identifier)" class="mw-redirect" title="ISBN (identifier)">ISBN</a> <a href="/wiki/Special:BookSources/0-07-145281-8" title="Special:BookSources/0-07-145281-8"><bdi>0-07-145281-8</bdi></a>. <q>In order for analog devices... to communicate with digital circuits...</q></cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=book&rft.btitle=Practical+electronics+for+inventors&rft.pages=730&rft.pub=McGraw-Hill+Professional&rft.date=2006&rft.isbn=0-07-145281-8&rft.aulast=Scherz&rft.aufirst=Paul&rft_id=https%3A%2F%2Fbooks.google.com%2Fbooks%3Fid%3DnMBtypLEdqgC%26q%3Danalog%2Bto%2Bdigital%2Bconverter%26pg%3DPA730&rfr_id=info%3Asid%2Fen.wikipedia.org%3AAnalogue+electronics" class="Z3988"></span></span> </li> <li id="cite_note-13"><span class="mw-cite-backlink"><b><a href="#cite_ref-13">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite class="citation web cs1"><a rel="nofollow" class="external text" href="https://www.mathsisfun.com/time-clocks.html">"Clocks - Digital and Analog"</a>. <i>Math is Fun</i><span class="reference-accessdate">. Retrieved <span class="nowrap">2020-12-18</span></span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=unknown&rft.jtitle=Math+is+Fun&rft.atitle=Clocks+-+Digital+and+Analog&rft_id=https%3A%2F%2Fwww.mathsisfun.com%2Ftime-clocks.html&rfr_id=info%3Asid%2Fen.wikipedia.org%3AAnalogue+electronics" class="Z3988"></span></span> </li> <li id="cite_note-14"><span class="mw-cite-backlink"><b><a href="#cite_ref-14">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFWilliams1991" class="citation book cs1">Williams, Jim (1991). <a rel="nofollow" class="external text" href="https://books.google.com/books?id=CFoEAP2lwLEC&q=analog+circuit+design+difficulty&pg=PA238"><i>Analog circuit design</i></a>. Newnes. p. 238. <a href="/wiki/ISBN_(identifier)" class="mw-redirect" title="ISBN (identifier)">ISBN</a> <a href="/wiki/Special:BookSources/0-7506-9640-0" title="Special:BookSources/0-7506-9640-0"><bdi>0-7506-9640-0</bdi></a>. <q>Even within companies producing both analog and digital products...</q></cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=book&rft.btitle=Analog+circuit+design&rft.pages=238&rft.pub=Newnes&rft.date=1991&rft.isbn=0-7506-9640-0&rft.aulast=Williams&rft.aufirst=Jim&rft_id=https%3A%2F%2Fbooks.google.com%2Fbooks%3Fid%3DCFoEAP2lwLEC%26q%3Danalog%2Bcircuit%2Bdesign%2Bdifficulty%26pg%3DPA238&rfr_id=info%3Asid%2Fen.wikipedia.org%3AAnalogue+electronics" class="Z3988"></span></span> </li> </ol></div></div> <div class="navbox-styles"><style data-mw-deduplicate="TemplateStyles:r1129693374">.mw-parser-output .hlist dl,.mw-parser-output .hlist ol,.mw-parser-output .hlist ul{margin:0;padding:0}.mw-parser-output .hlist dd,.mw-parser-output .hlist dt,.mw-parser-output .hlist li{margin:0;display:inline}.mw-parser-output .hlist.inline,.mw-parser-output .hlist.inline dl,.mw-parser-output .hlist.inline ol,.mw-parser-output .hlist.inline ul,.mw-parser-output .hlist dl dl,.mw-parser-output .hlist dl ol,.mw-parser-output .hlist dl ul,.mw-parser-output .hlist ol dl,.mw-parser-output .hlist ol ol,.mw-parser-output .hlist ol ul,.mw-parser-output .hlist ul dl,.mw-parser-output .hlist ul ol,.mw-parser-output .hlist ul ul{display:inline}.mw-parser-output .hlist .mw-empty-li{display:none}.mw-parser-output .hlist dt::after{content:": "}.mw-parser-output .hlist dd::after,.mw-parser-output .hlist li::after{content:" · ";font-weight:bold}.mw-parser-output .hlist dd:last-child::after,.mw-parser-output .hlist dt:last-child::after,.mw-parser-output .hlist li:last-child::after{content:none}.mw-parser-output .hlist dd dd:first-child::before,.mw-parser-output .hlist dd dt:first-child::before,.mw-parser-output .hlist dd li:first-child::before,.mw-parser-output .hlist dt dd:first-child::before,.mw-parser-output .hlist dt dt:first-child::before,.mw-parser-output .hlist dt li:first-child::before,.mw-parser-output .hlist li dd:first-child::before,.mw-parser-output .hlist li dt:first-child::before,.mw-parser-output .hlist li li:first-child::before{content:" (";font-weight:normal}.mw-parser-output .hlist dd dd:last-child::after,.mw-parser-output .hlist dd dt:last-child::after,.mw-parser-output .hlist dd li:last-child::after,.mw-parser-output .hlist dt dd:last-child::after,.mw-parser-output .hlist dt dt:last-child::after,.mw-parser-output .hlist dt li:last-child::after,.mw-parser-output .hlist li dd:last-child::after,.mw-parser-output .hlist li dt:last-child::after,.mw-parser-output .hlist li li:last-child::after{content:")";font-weight:normal}.mw-parser-output .hlist ol{counter-reset:listitem}.mw-parser-output .hlist ol>li{counter-increment:listitem}.mw-parser-output .hlist ol>li::before{content:" "counter(listitem)"\a0 "}.mw-parser-output .hlist dd ol>li:first-child::before,.mw-parser-output .hlist dt ol>li:first-child::before,.mw-parser-output .hlist li ol>li:first-child::before{content:" ("counter(listitem)"\a0 "}</style><style data-mw-deduplicate="TemplateStyles:r1236075235">.mw-parser-output .navbox{box-sizing:border-box;border:1px solid #a2a9b1;width:100%;clear:both;font-size:88%;text-align:center;padding:1px;margin:1em auto 0}.mw-parser-output .navbox .navbox{margin-top:0}.mw-parser-output .navbox+.navbox,.mw-parser-output .navbox+.navbox-styles+.navbox{margin-top:-1px}.mw-parser-output .navbox-inner,.mw-parser-output .navbox-subgroup{width:100%}.mw-parser-output .navbox-group,.mw-parser-output .navbox-title,.mw-parser-output .navbox-abovebelow{padding:0.25em 1em;line-height:1.5em;text-align:center}.mw-parser-output .navbox-group{white-space:nowrap;text-align:right}.mw-parser-output .navbox,.mw-parser-output .navbox-subgroup{background-color:#fdfdfd}.mw-parser-output .navbox-list{line-height:1.5em;border-color:#fdfdfd}.mw-parser-output .navbox-list-with-group{text-align:left;border-left-width:2px;border-left-style:solid}.mw-parser-output tr+tr>.navbox-abovebelow,.mw-parser-output tr+tr>.navbox-group,.mw-parser-output tr+tr>.navbox-image,.mw-parser-output tr+tr>.navbox-list{border-top:2px solid #fdfdfd}.mw-parser-output .navbox-title{background-color:#ccf}.mw-parser-output .navbox-abovebelow,.mw-parser-output .navbox-group,.mw-parser-output .navbox-subgroup .navbox-title{background-color:#ddf}.mw-parser-output .navbox-subgroup .navbox-group,.mw-parser-output .navbox-subgroup .navbox-abovebelow{background-color:#e6e6ff}.mw-parser-output .navbox-even{background-color:#f7f7f7}.mw-parser-output .navbox-odd{background-color:transparent}.mw-parser-output .navbox .hlist td dl,.mw-parser-output .navbox .hlist td ol,.mw-parser-output .navbox .hlist td ul,.mw-parser-output .navbox td.hlist dl,.mw-parser-output .navbox td.hlist ol,.mw-parser-output .navbox td.hlist ul{padding:0.125em 0}.mw-parser-output .navbox .navbar{display:block;font-size:100%}.mw-parser-output .navbox-title .navbar{float:left;text-align:left;margin-right:0.5em}body.skin--responsive .mw-parser-output .navbox-image img{max-width:none!important}@media print{body.ns-0 .mw-parser-output .navbox{display:none!important}}</style></div><div role="navigation" class="navbox" aria-labelledby="Electronics" style="padding:3px"><table class="nowraplinks mw-collapsible autocollapse navbox-inner" style="border-spacing:0;background:transparent;color:inherit"><tbody><tr><th scope="col" class="navbox-title" colspan="2"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1129693374"><style data-mw-deduplicate="TemplateStyles:r1239400231">.mw-parser-output .navbar{display:inline;font-size:88%;font-weight:normal}.mw-parser-output .navbar-collapse{float:left;text-align:left}.mw-parser-output .navbar-boxtext{word-spacing:0}.mw-parser-output .navbar ul{display:inline-block;white-space:nowrap;line-height:inherit}.mw-parser-output .navbar-brackets::before{margin-right:-0.125em;content:"[ "}.mw-parser-output .navbar-brackets::after{margin-left:-0.125em;content:" ]"}.mw-parser-output .navbar li{word-spacing:-0.125em}.mw-parser-output .navbar a>span,.mw-parser-output .navbar a>abbr{text-decoration:inherit}.mw-parser-output .navbar-mini abbr{font-variant:small-caps;border-bottom:none;text-decoration:none;cursor:inherit}.mw-parser-output .navbar-ct-full{font-size:114%;margin:0 7em}.mw-parser-output .navbar-ct-mini{font-size:114%;margin:0 4em}html.skin-theme-clientpref-night .mw-parser-output .navbar li a abbr{color:var(--color-base)!important}@media(prefers-color-scheme:dark){html.skin-theme-clientpref-os .mw-parser-output .navbar li a abbr{color:var(--color-base)!important}}@media print{.mw-parser-output .navbar{display:none!important}}</style><div class="navbar plainlinks hlist navbar-mini"><ul><li class="nv-view"><a href="/wiki/Template:Electronic_systems" title="Template:Electronic systems"><abbr title="View this template">v</abbr></a></li><li class="nv-talk"><a href="/wiki/Template_talk:Electronic_systems" title="Template talk:Electronic systems"><abbr title="Discuss this template">t</abbr></a></li><li class="nv-edit"><a href="/wiki/Special:EditPage/Template:Electronic_systems" title="Special:EditPage/Template:Electronic systems"><abbr title="Edit this template">e</abbr></a></li></ul></div><div id="Electronics" style="font-size:114%;margin:0 4em"><a href="/wiki/Electronics" title="Electronics">Electronics</a></div></th></tr><tr><th scope="row" class="navbox-group" style="width:1%">Branches</th><td class="navbox-list-with-group navbox-list navbox-odd hlist" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a class="mw-selflink selflink">Analogue electronics</a></li> <li><a href="/wiki/Digital_electronics" title="Digital electronics">Digital electronics</a></li> <li><a href="/wiki/Electronic_engineering" title="Electronic engineering">Electronic engineering</a></li> <li><a href="/wiki/Instrumentation" title="Instrumentation">Instrumentation</a></li> <li><a href="/wiki/Microelectronics" title="Microelectronics">Microelectronics</a></li> <li><a href="/wiki/Optoelectronics" title="Optoelectronics">Optoelectronics</a></li> <li><a href="/wiki/Power_electronics" title="Power electronics">Power electronics</a></li> <li><a href="/wiki/Printed_electronics" title="Printed electronics">Printed electronics</a></li> <li><a href="/wiki/Semiconductor" title="Semiconductor">Semiconductor</a></li> <li><a href="/wiki/Schematic_capture" title="Schematic capture">Schematic capture</a></li> <li><a href="/wiki/Thermal_management_(electronics)" title="Thermal management (electronics)">Thermal management</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Advanced<br />topics</th><td class="navbox-list-with-group navbox-list navbox-even hlist" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Timeline_of_computing_2020%E2%80%93present" title="Timeline of computing 2020–present">2020s in computing</a></li> <li><a href="/wiki/Atomtronics" title="Atomtronics">Atomtronics</a></li> <li><a href="/wiki/Bioelectronics" title="Bioelectronics">Bioelectronics</a></li> <li><a href="/wiki/List_of_emerging_technologies#Electronics" title="List of emerging technologies">List of emerging electronics</a></li> <li><a href="/wiki/Failure_of_electronic_components" title="Failure of electronic components">Failure of electronic components</a></li> <li><a href="/wiki/Flexible_electronics" title="Flexible electronics">Flexible electronics</a></li> <li><a href="/wiki/Low-power_electronics" title="Low-power electronics">Low-power electronics</a></li> <li><a href="/wiki/Molecular_electronics" title="Molecular electronics">Molecular electronics</a></li> <li><a href="/wiki/Nanoelectronics" title="Nanoelectronics">Nanoelectronics</a></li> <li><a href="/wiki/Organic_electronics" title="Organic electronics">Organic electronics</a></li> <li><a href="/wiki/Photonics" title="Photonics">Photonics</a></li> <li><a href="/wiki/Piezotronics" title="Piezotronics">Piezotronics</a></li> <li><a href="/wiki/Quantum_electronics" class="mw-redirect" title="Quantum electronics">Quantum electronics</a></li> <li><a href="/wiki/Spintronics" title="Spintronics">Spintronics</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Electronic<br />equipment</th><td class="navbox-list-with-group navbox-list navbox-odd hlist" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Air_conditioning" title="Air conditioning">Air conditioner</a></li> <li><a href="/wiki/Central_heating" title="Central heating">Central heating</a></li> <li><a href="/wiki/Clothes_dryer" title="Clothes dryer">Clothes dryer</a></li> <li><a href="/wiki/Computer" title="Computer">Computer</a>/<a href="/wiki/Laptop" title="Laptop">Notebook</a></li> <li><a href="/wiki/Digital_camera" title="Digital camera">Camera</a></li> <li><a href="/wiki/Dishwasher" title="Dishwasher">Dishwasher</a></li> <li><a href="/wiki/Freezer" class="mw-redirect" title="Freezer">Freezer</a></li> <li><a href="/wiki/Domestic_robot" title="Domestic robot">Home robot</a></li> <li><a href="/wiki/Home_cinema" title="Home cinema">Home cinema</a></li> <li><a href="/wiki/Home_theater_PC" title="Home theater PC">Home theater PC</a></li> <li><a href="/wiki/Information_technology" title="Information technology">Information technology</a></li> <li><a href="/wiki/Kitchen_stove" title="Kitchen stove">Cooker</a></li> <li><a href="/wiki/Microwave_oven" title="Microwave oven">Microwave oven</a></li> <li><a href="/wiki/Mobile_phone" title="Mobile phone">Mobile phone</a></li> <li><a href="/wiki/Networking_hardware" title="Networking hardware">Networking hardware</a></li> <li><a href="/wiki/Portable_media_player" title="Portable media player">Portable media player</a></li> <li><a href="/wiki/Radio_receiver" title="Radio receiver">Radio</a></li> <li><a href="/wiki/Refrigerator" title="Refrigerator">Refrigerator</a></li> <li><a href="/wiki/Robotic_vacuum_cleaner" title="Robotic vacuum cleaner">Robotic vacuum cleaner</a></li> <li><a href="/wiki/Tablet_computer" title="Tablet computer">Tablet</a></li> <li><a href="/wiki/Telephone" title="Telephone">Telephone</a></li> <li><a href="/wiki/Television" title="Television">Television</a></li> <li><a href="/wiki/Tankless_water_heating" title="Tankless water heating">Water heater</a></li> <li><a href="/wiki/Video_game_console" title="Video game console">Video game console</a></li> <li><a href="/wiki/Washing_machine" title="Washing machine">Washing machine</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Applications</th><td class="navbox-list-with-group navbox-list navbox-even hlist" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Audio_equipment" title="Audio equipment">Audio equipment</a></li> <li><a href="/wiki/Automotive_electronics" title="Automotive electronics">Automotive electronics</a></li> <li><a href="/wiki/Avionics" title="Avionics">Avionics</a></li> <li><a href="/wiki/Control_system" title="Control system">Control system</a></li> <li><a href="/wiki/Data_acquisition" title="Data acquisition">Data acquisition</a></li> <li><a href="/wiki/Ebook" title="Ebook">e-book</a></li> <li><a href="/wiki/EHealth" title="EHealth">e-health</a></li> <li><a href="/wiki/Electromagnetic_warfare" class="mw-redirect" title="Electromagnetic warfare">Electromagnetic warfare</a></li> <li><a href="/wiki/Electronics_industry" title="Electronics industry">Electronics industry</a></li> <li><a href="/wiki/Embedded_system" title="Embedded system">Embedded system</a></li> <li><a href="/wiki/Home_appliance" title="Home appliance">Home appliance</a></li> <li><a href="/wiki/Home_automation" title="Home automation">Home automation</a></li> <li><a href="/wiki/Integrated_circuit" title="Integrated circuit">Integrated circuit</a></li> <li><a href="/wiki/Home_appliance" title="Home appliance">Home appliance</a> <ul><li><a href="/wiki/Consumer_electronics" title="Consumer electronics">Consumer electronics</a></li> <li><a href="/wiki/Major_appliance" title="Major appliance">Major appliance</a></li> <li><a href="/wiki/Small_appliance" title="Small appliance">Small appliance</a></li></ul></li> <li><a href="/wiki/Marine_electronics" title="Marine electronics">Marine electronics</a></li> <li><a href="/wiki/Microwave" title="Microwave">Microwave</a> technology</li> <li><a href="/wiki/Military" title="Military">Military</a> electronics</li> <li><a href="/wiki/Multimedia" title="Multimedia">Multimedia</a></li> <li><a href="/wiki/Nuclear_electronics" title="Nuclear electronics">Nuclear electronics</a></li> <li><a href="/wiki/Open-source_hardware" title="Open-source hardware">Open-source hardware</a></li> <li><a href="/wiki/Radar" title="Radar">Radar</a> and <a href="/wiki/Radio_navigation" title="Radio navigation">Radio navigation</a></li> <li><a href="/wiki/Radio-frequency_engineering" title="Radio-frequency engineering">Radio electronics</a></li> <li><a href="/wiki/Terahertz_radiation" title="Terahertz radiation">Terahertz technology</a></li> <li><a href="/wiki/Wire" title="Wire">Wired</a> and <a href="/wiki/Wireless" title="Wireless">Wireless</a> Communications</li></ul> </div></td></tr></tbody></table></div> <div class="navbox-styles"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1129693374"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1236075235"><style data-mw-deduplicate="TemplateStyles:r1038841319">.mw-parser-output .tooltip-dotted{border-bottom:1px dotted;cursor:help}</style></div><div role="navigation" class="navbox authority-control" aria-label="Navbox" style="padding:3px"><table class="nowraplinks hlist navbox-inner" style="border-spacing:0;background:transparent;color:inherit"><tbody><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/Help:Authority_control" title="Help:Authority control">Authority control databases</a>: National <span class="mw-valign-text-top noprint" typeof="mw:File/Frameless"><a href="https://www.wikidata.org/wiki/Q174925#identifiers" title="Edit this at Wikidata"><img alt="Edit this at Wikidata" src="//upload.wikimedia.org/wikipedia/en/thumb/8/8a/OOjs_UI_icon_edit-ltr-progressive.svg/10px-OOjs_UI_icon_edit-ltr-progressive.svg.png" decoding="async" width="10" height="10" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/en/thumb/8/8a/OOjs_UI_icon_edit-ltr-progressive.svg/15px-OOjs_UI_icon_edit-ltr-progressive.svg.png 1.5x, //upload.wikimedia.org/wikipedia/en/thumb/8/8a/OOjs_UI_icon_edit-ltr-progressive.svg/20px-OOjs_UI_icon_edit-ltr-progressive.svg.png 2x" data-file-width="20" data-file-height="20" /></a></span></th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"><ul><li><span class="uid"><span class="rt-commentedText tooltip tooltip-dotted" title="analogová technika"><a rel="nofollow" class="external text" href="https://aleph.nkp.cz/F/?func=find-c&local_base=aut&ccl_term=ica=ph207194&CON_LNG=ENG">Czech Republic</a></span></span></li></ul></div></td></tr></tbody></table></div>    </div><noscript><img src="https://login.wikimedia.org/wiki/Special:CentralAutoLogin/start?type=1x1" alt="" width="1" height="1" style="border: none; position: absolute;"></noscript> <div class="printfooter" data-nosnippet="">Retrieved from "<a dir="ltr" href="https://en.wikipedia.org/w/index.php?title=Analogue_electronics&oldid=1255948808">https://en.wikipedia.org/w/index.php?title=Analogue_electronics&oldid=1255948808</a>"</div></div> <div id="catlinks" class="catlinks" data-mw="interface"><div id="mw-normal-catlinks" class="mw-normal-catlinks"><a href="/wiki/Help:Category" title="Help:Category">Categories</a>: <ul><li><a href="/wiki/Category:Analog_circuits" title="Category:Analog circuits">Analog circuits</a></li><li><a href="/wiki/Category:Electronic_engineering" title="Category:Electronic engineering">Electronic engineering</a></li></ul></div><div id="mw-hidden-catlinks" class="mw-hidden-catlinks mw-hidden-cats-hidden">Hidden categories: <ul><li><a href="/wiki/Category:Articles_with_short_description" title="Category:Articles with short description">Articles with short description</a></li><li><a href="/wiki/Category:Short_description_matches_Wikidata" title="Category:Short description matches Wikidata">Short description matches Wikidata</a></li><li><a href="/wiki/Category:Use_Oxford_spelling_from_August_2016" title="Category:Use Oxford spelling from August 2016">Use Oxford spelling from August 2016</a></li><li><a href="/wiki/Category:Articles_containing_explicitly_cited_American_English-language_text" title="Category:Articles containing explicitly cited American English-language text">Articles containing explicitly cited American English-language text</a></li><li><a href="/wiki/Category:Articles_containing_Ancient_Greek_(to_1453)-language_text" title="Category:Articles containing Ancient Greek (to 1453)-language text">Articles containing Ancient Greek (to 1453)-language text</a></li><li><a href="/wiki/Category:All_articles_with_failed_verification" title="Category:All articles with failed verification">All articles with failed verification</a></li><li><a href="/wiki/Category:Articles_with_failed_verification_from_April_2018" title="Category:Articles with failed verification from April 2018">Articles with failed verification from April 2018</a></li></ul></div></div> </div> </main> </div> <div class="mw-footer-container"> <footer id="footer" class="mw-footer" > <ul id="footer-info"> <li id="footer-info-lastmod"> This page was last edited on 7 November 2024, at 12:15<span class="anonymous-show"> (UTC)</span>.</li> <li id="footer-info-copyright">Text is available under the <a href="/wiki/Wikipedia:Text_of_the_Creative_Commons_Attribution-ShareAlike_4.0_International_License" title="Wikipedia:Text of the Creative Commons Attribution-ShareAlike 4.0 International License">Creative Commons Attribution-ShareAlike 4.0 License</a>; additional terms may apply. By using this site, you agree to the <a href="https://foundation.wikimedia.org/wiki/Special:MyLanguage/Policy:Terms_of_Use" class="extiw" title="foundation:Special:MyLanguage/Policy:Terms of Use">Terms of Use</a> and <a href="https://foundation.wikimedia.org/wiki/Special:MyLanguage/Policy:Privacy_policy" class="extiw" title="foundation:Special:MyLanguage/Policy:Privacy policy">Privacy Policy</a>. Wikipedia® is a registered trademark of the <a rel="nofollow" class="external text" href="https://wikimediafoundation.org/">Wikimedia Foundation, Inc.</a>, a non-profit organization.</li> </ul> <ul id="footer-places"> <li id="footer-places-privacy"><a href="https://foundation.wikimedia.org/wiki/Special:MyLanguage/Policy:Privacy_policy">Privacy policy</a></li> <li id="footer-places-about"><a href="/wiki/Wikipedia:About">About Wikipedia</a></li> <li id="footer-places-disclaimers"><a href="/wiki/Wikipedia:General_disclaimer">Disclaimers</a></li> <li id="footer-places-contact"><a href="//en.wikipedia.org/wiki/Wikipedia:Contact_us">Contact Wikipedia</a></li> <li id="footer-places-wm-codeofconduct"><a href="https://foundation.wikimedia.org/wiki/Special:MyLanguage/Policy:Universal_Code_of_Conduct">Code of Conduct</a></li> <li id="footer-places-developers"><a href="https://developer.wikimedia.org">Developers</a></li> <li id="footer-places-statslink"><a href="https://stats.wikimedia.org/#/en.wikipedia.org">Statistics</a></li> <li id="footer-places-cookiestatement"><a href="https://foundation.wikimedia.org/wiki/Special:MyLanguage/Policy:Cookie_statement">Cookie statement</a></li> <li id="footer-places-mobileview"><a href="//en.m.wikipedia.org/w/index.php?title=Analogue_electronics&mobileaction=toggle_view_mobile" class="noprint stopMobileRedirectToggle">Mobile view</a></li> </ul> <ul id="footer-icons" class="noprint"> <li id="footer-copyrightico"><a href="https://wikimediafoundation.org/" class="cdx-button cdx-button--fake-button cdx-button--size-large cdx-button--fake-button--enabled"><img src="/static/images/footer/wikimedia-button.svg" width="84" height="29" alt="Wikimedia Foundation" loading="lazy"></a></li> <li id="footer-poweredbyico"><a href="https://www.mediawiki.org/" class="cdx-button cdx-button--fake-button cdx-button--size-large cdx-button--fake-button--enabled"><img src="/w/resources/assets/poweredby_mediawiki.svg" alt="Powered by MediaWiki" width="88" height="31" loading="lazy"></a></li> </ul> </footer> </div> </div> </div> <div class="vector-settings" id="p-dock-bottom"> <ul></ul> </div><script>(RLQ=window.RLQ||[]).push(function(){mw.config.set({"wgHostname":"mw-web.codfw.main-f69cdc8f6-4fsrh","wgBackendResponseTime":167,"wgPageParseReport":{"limitreport":{"cputime":"0.504","walltime":"0.651","ppvisitednodes":{"value":2202,"limit":1000000},"postexpandincludesize":{"value":40480,"limit":2097152},"templateargumentsize":{"value":2666,"limit":2097152},"expansiondepth":{"value":16,"limit":100},"expensivefunctioncount":{"value":4,"limit":500},"unstrip-depth":{"value":1,"limit":20},"unstrip-size":{"value":59987,"limit":5000000},"entityaccesscount":{"value":1,"limit":400},"timingprofile":["100.00% 583.624 1 -total"," 30.59% 178.543 1 Template:Reflist"," 20.98% 122.471 9 Template:Cite_book"," 18.41% 107.446 1 Template:Langx"," 16.06% 93.701 1 Template:Electronics"," 14.90% 86.978 1 Template:Navbox"," 13.26% 77.371 1 Template:Short_description"," 6.52% 38.070 1 Template:Failed_verification"," 6.36% 37.116 2 Template:Pagetype"," 6.04% 35.245 1 Template:Authority_control"]},"scribunto":{"limitreport-timeusage":{"value":"0.337","limit":"10.000"},"limitreport-memusage":{"value":16288593,"limit":52428800}},"cachereport":{"origin":"mw-web.codfw.main-f69cdc8f6-nd6xd","timestamp":"20241122142218","ttl":2592000,"transientcontent":false}}});});</script> <script type="application/ld+json">{"@context":"https:\/\/schema.org","@type":"Article","name":"Analogue electronics","url":"https:\/\/en.wikipedia.org\/wiki\/Analogue_electronics","sameAs":"http:\/\/www.wikidata.org\/entity\/Q174925","mainEntity":"http:\/\/www.wikidata.org\/entity\/Q174925","author":{"@type":"Organization","name":"Contributors to Wikimedia projects"},"publisher":{"@type":"Organization","name":"Wikimedia Foundation, Inc.","logo":{"@type":"ImageObject","url":"https:\/\/www.wikimedia.org\/static\/images\/wmf-hor-googpub.png"}},"datePublished":"2005-03-29T16:42:26Z","dateModified":"2024-11-07T12:15:44Z","image":"https:\/\/upload.wikimedia.org\/wikipedia\/commons\/4\/4e\/Kennline_NTC.png","headline":"electronic systems with a continuously variable signal"}</script> </body> </html>