DIY 85-260VAC to Dual +/-15VDC-0.5A Switching Power Supply | Electronics Forum (Circuits, Projects and Microcontrollers)

<!DOCTYPE html> <html id="XF" lang="en-US" dir="LTR" data-app="public" data-template="xfrm_resource_view" data-container-key="xfrmCategory-15" data-content-key="" data-logged-in="false" data-cookie-prefix="xf_" data-csrf="1732695537,04e82f9215272e48ef94117f0280b931" class="has-no-js template-xfrm_resource_view XenBase layout-classic style-light sidebar-right xb-toggle-default xb-sidebar-show" > <head> <link rel="amphtml" href="https://www.electro-tech-online.com/articles/diy-85-260vac-to-dual-15vdc-0-5a-switching-power-supply.1024/?amp=1"> <meta charset="utf-8" /> <meta http-equiv="X-UA-Compatible" content="IE=Edge" /> <meta name="viewport" content="width=device-width, initial-scale=1, viewport-fit=cover"> <meta name="google-site-verification" content="8aECyKQ0jTEfZHF2mNguWwCvxcGSDIcHlRgLdE6BSCE" />  <script async src="https://securepubads.g.doubleclick.net/tag/js/gpt.js"></script> <script> window.googletag = window.googletag || {cmd: []}; googletag.cmd.push(function() { var pathParts = window.location.pathname.substr(1).split('/'); var mapHeader = googletag.sizeMapping() .addSize([768, 200], [728, 90]) .addSize([0, 0], [300, 250]) .build(); var mapLargeHeader = googletag.sizeMapping() .addSize([1024, 200], [[970, 90], [970, 250]]) .addSize([0, 0], [300, 250]) .build(); var mapWallpaper = googletag.sizeMapping() .addSize([1024, 500], [[1, 1]]) .addSize([0, 0], [[1, 1]]) .build(); var gptSlots = []; gptSlots[0] = googletag.defineSlot('/5272491/ee_network/eto_header', [[300, 250], [728, 90]], 'div-gpt-eto-header') .defineSizeMapping(mapHeader) .addService(googletag.pubads()); gptSlots[1] = googletag.defineSlot('/5272491/ee_network/eto_largeleader', [[970, 90], [970, 250]], 'div-gpt-eto_largeleader') .defineSizeMapping(mapLargeHeader) .addService(googletag.pubads()); gptSlots[2] = googletag.defineSlot('/5272491/ee_network/eto_wallpaper', [[1, 1]], 'div-gpt-eto_wallpaper') .defineSizeMapping(mapWallpaper) .addService(googletag.pubads()); googletag.defineSlot('/5272491/ee_network/eto_customsearchbox', [[300, 90]], 'div-gpt-eto_customsearchbox').addService(googletag.pubads()); googletag.defineSlot('/5272491/ee_network/eto_sidebar1', [[300, 250], [300, 600]], 'div-gpt-eto_sidebar1').addService(googletag.pubads()); googletag.defineSlot('/5272491/ee_network/eto_sidebarbottom', [[300, 250], [300, 600]], 'div-gpt-eto_sidebarbottom').addService(googletag.pubads()); googletag.defineSlot('/5272491/ee_network/eto_thread1', [[728, 90]], 'div-gpt-eto_thread1').addService(googletag.pubads()); googletag.defineSlot('/5272491/ee_network/eto_thread2', [[728, 90]], 'div-gpt-eto_thread2').addService(googletag.pubads()); googletag.defineSlot('/5272491/ee_network/eto_thread3', [[728, 90]], 'div-gpt-eto_thread3').addService(googletag.pubads()); googletag.pubads().enableSingleRequest(); googletag.pubads().collapseEmptyDivs(); googletag.pubads().setTargeting('articletitle', pathParts[0] ? pathParts[0]: 'home-page'); googletag.enableServices(); }); </script>  <title>DIY 85-260VAC to Dual +/-15VDC-0.5A Switching Power Supply | Electronics Forum (Circuits, Projects and Microcontrollers)</title> <link rel="manifest" href="/webmanifest.php"> <meta name="theme-color" content="#232a35" /> <meta name="apple-mobile-web-app-title" content="Electronics Forum (Circuits, Projects and Microcontrollers)"> <meta name="description" content="This video introduces an AC-to-DC Flyback switching power supply that converts universal 50Hz AC input (85-V to 260VAC) to dual-output (positive and..." /> <meta property="og:description" content="This video introduces an AC-to-DC Flyback switching power supply that converts universal 50Hz AC input (85-V to 260VAC) to dual-output (positive and negative) 15VDC to 0.5A (2*7.5W), which can be used in various applications, such as powering..." /> <meta property="twitter:description" content="This video introduces an AC-to-DC Flyback switching power supply that converts universal 50Hz AC input (85-V to 260VAC) to dual-output (positive and negative) 15VDC to 0.5A (2*7.5W), which can be..." /> <meta property="og:url" content="https://www.electro-tech-online.com/articles/diy-85-260vac-to-dual-15vdc-0-5a-switching-power-supply.1024/" /> <link rel="canonical" href="https://www.electro-tech-online.com/articles/diy-85-260vac-to-dual-15vdc-0-5a-switching-power-supply.1024/" /> <meta property="og:site_name" content="Electronics Forum (Circuits, Projects and Microcontrollers)" /> <meta property="og:type" content="website" /> <meta property="og:title" content="DIY 85-260VAC to Dual +/-15VDC-0.5A Switching Power Supply" /> <meta property="twitter:title" content="DIY 85-260VAC to Dual +/-15VDC-0.5A Switching Power Supply" /> <link rel="preconnect" href="https://fonts.googleapis.com"><link rel="preconnect" href="https://fonts.gstatic.com" crossorigin><link href="https://fonts.googleapis.com/css2?family=Montserrat:wght@400;700&display=swap" rel="stylesheet"> <link rel="preload" href="/styles/fonts/fa/fa-light-300.woff2?_v=5.15.3" as="font" type="font/woff2" crossorigin="anonymous" /> <link rel="preload" href="/styles/fonts/fa/fa-solid-900.woff2?_v=5.15.3" as="font" type="font/woff2" crossorigin="anonymous" /> <link rel="preload" href="/styles/fonts/fa/fa-brands-400.woff2?_v=5.15.3" as="font" type="font/woff2" crossorigin="anonymous" /> <link rel="stylesheet" href="/css.php?css=public%3Anormalize.css%2Cpublic%3Afa.css%2Cpublic%3Acore.less%2Cpublic%3Aapp.less&s=8&l=1&d=1708496185&k=4d24f9f2773ef6adcec8f496f627f9fdd4c7eca0" /> <link rel="stylesheet" href="/css.php?css=public%3ACMTV_Math.less%2Cpublic%3Aandy_rssfeed.less%2Cpublic%3Alightbox.less%2Cpublic%3Anotices.less%2Cpublic%3Arating_stars.less%2Cpublic%3Ashare_controls.less%2Cpublic%3AsvESE_autocomplete.less%2Cpublic%3Axb.less%2Cpublic%3Axb_search.less%2Cpublic%3Axb_welcome.less%2Cpublic%3Axcpa_main.css%2Cpublic%3Axcpa_prestitial.css%2Cpublic%3Axfrm.less%2Cpublic%3Aextra.less&s=8&l=1&d=1708496185&k=88d4ba4a82a60dd265728aff0e31a5d3c6849c41" /> <script src="/js/xf/preamble.min.js?_v=1977d1d7"></script>  <script>(function(w,d,s,l,i){w[l]=w[l]||[];w[l].push({'gtm.start': new Date().getTime(),event:'gtm.js'});var f=d.getElementsByTagName(s)[0], j=d.createElement(s),dl=l!='dataLayer'?'&l='+l:'';j.async=true;j.src= 'https://www.googletagmanager.com/gtm.js?id='+i+dl;f.parentNode.insertBefore(j,f); })(window,document,'script','dataLayer','GTM-MMC9PJ9');</script>   <script>(function(w,d,s,l,i){w[l]=w[l]||[];w[l].push({'gtm.start': new Date().getTime(),event:'gtm.js'});var f=d.getElementsByTagName(s)[0], j=d.createElement(s),dl=l!='dataLayer'?'&l='+l:'';j.async=true;j.src= 'https://www.googletagmanager.com/gtm.js?id='+i+dl;f.parentNode.insertBefore(j,f); })(window,document,'script','dataLayer','GTM-KLX5R59');</script>  </head> <body data-template="xfrm_resource_view"> <script> var GAMaccountID = 5272491 var GAMnetworkName = 'ee_network'; var GAMadUnitName = 'eto_prestitial'; var GAMadSizes = '300, 225\n 640, 480'; googletag.slots = googletag.slots || {}; </script> <a href="#main-content" class="visually-hidden focusable skip-link"> Skip to main content </a> <div id="prestitial" style="opacity: 0;"> <div id="prestitial-overlay"></div> <div id="prestitial-grid"> <div class="prestitial-logo"> <div class="title-area"> <div class="p-header-logo p-header-logo--image"> <a href="/"> <img src="https://www.electro-tech-online.com/styles/eto/xenforo/logo.png" srcset="" alt="Electronics Forum (Circuits, Projects and Microcontrollers)" width="253" height="34" /> </a> </div> </div> </div> <div class="close-cta"> Continue to Site <i class="fa fa-arrow-right"></i> </div> <div id="prestitial-banner"></div> </div> </div>  <div id="body-wrapper" style="opacity: 0;"> <div class="p-pageWrapper" id="top"> <div class="p-pageWrapper--helper"></div> <div class="xb-page-wrapper xb-canvas-menuActive"> <div class="xb-page-wrapper--helper"></div> <header class="p-header" id="header"> <div class="p-header-inner"> <div class="p-header-content"> <div class="p-header-logo p-header-logo--image"> <a href="/"> <img src="https://www.electro-tech-online.com/styles/eto/xenforo/logo.png" srcset="" alt="Electronics Forum (Circuits, Projects and Microcontrollers)" width="253" height="34" /> </a> </div> <div class="xb-searchWrapper" id="xb-searchWrapper" tabindex="0"> <form action="/search/search" id="xbSearch" data-xf-init="quick-search" data-autocomplete-filter="null" data-autocomplete-filter="null" class="xb-search" method="post" data-no-auto-focus="true"> <input type="text" class="input" name="keywords" placeholder="Search…" aria-label="Search" /> <div class="menu menu--structural menu--search" aria-hidden="true"> <div class="menu-content"> <div class="menu-row"> <select name="constraints" class="js-quickSearch-constraint input" aria-label="Search within"> <option value="">Everywhere</option> <option value="{"search_type":"resource"}">Electronic Projects</option> <option value="{"search_type":"resource","c":{"categories":[15],"child_categories":1}}" selected="selected">This category</option> </select> </div> <div class="menu-row"> <label class="iconic"><input type="checkbox" name="c[container_only]" value="1" /><i aria-hidden="true"></i><span class="iconic-label">Search titles and first posts only</span></label> </div> <div class="menu-row"> <label class="iconic"><input type="checkbox" name="c[title_only]" value="1" /><i aria-hidden="true"></i><span class="iconic-label">Search titles only <span tabindex="0" role="button" data-xf-init="tooltip" data-trigger="hover focus click" title="Tags will also be searched in content where tags are supported"> <i class="fa--xf far fa-question-circle u-muted u-smaller" aria-hidden="true"></i> </span></span></label> </div> <div class="menu-row"> <div class="inputGroup"> <span class="inputGroup-text" id="ctrl_search_menu_by_member">By:</span> <input type="text" class="input" name="c[users]" data-xf-init="auto-complete" placeholder="Member" aria-labelledby="ctrl_search_menu_by_member" /> </div> </div> <div class="menu-footer"> <span class="menu-footer-controls"> <button type="submit" class="button--primary button button--icon button--icon--search"><span class="button-text">Search</span></button> <a href="/search/" class="button"><span class="button-text">Advanced search…</span></a> </span> </div> <input type="hidden" name="_xfToken" value="1732695537,04e82f9215272e48ef94117f0280b931" /> </div> </div> </form> </div> </div> </div> </header> <div class="xb-content-wrapper"> <div class="navigation-helper"></div> <div class="p-nav--wrapper"> <nav class="p-nav"> <div class="p-nav-inner"> <button type="button" class="button--plain p-nav-menuTrigger button" data-xf-click="off-canvas" data-menu=".js-headerOffCanvasMenu" tabindex="0" aria-label="Menu"><span class="button-text"> <i aria-hidden="true"></i> </span></button> <div class="p-nav-smallLogo"> <a href="/"> <img src="https://www.electro-tech-online.com/styles/eto/xenforo/logo.png" srcset="" alt="Electronics Forum (Circuits, Projects and Microcontrollers)" width="253" height="34" /> </a> </div> <div class="p-nav-scroller hScroller" data-xf-init="h-scroller" data-auto-scroll=".p-navEl.is-selected"> <div class="hScroller-scroll"> <ul class="p-nav-list js-offCanvasNavSource"> <li class="navforums"> <div class="p-navEl " data-has-children="true"> <a href="/" class="p-navEl-link p-navEl-link--splitMenu " data-nav-id="forums">Forums</a> <a data-xf-key="1" data-xf-click="menu" data-menu-pos-ref="< .p-navEl" class="p-navEl-splitTrigger" role="button" tabindex="0" aria-label="Toggle expanded" aria-expanded="false" aria-haspopup="true"></a> <div class="menu menu--structural" data-menu="menu" aria-hidden="true"> <div class="menu-content"> <a href="/whats-new/posts/" class="menu-linkRow u-indentDepth0 js-offCanvasCopy " data-nav-id="newPosts">New posts</a> <a href="/search/?type=post" class="menu-linkRow u-indentDepth0 js-offCanvasCopy " data-nav-id="searchForums">Search forums</a> </div> </div> </div> </li> <li class="navwhatsNew"> <div class="p-navEl " data-has-children="true"> <a href="/whats-new/" class="p-navEl-link p-navEl-link--splitMenu " data-nav-id="whatsNew">What's new</a> <a data-xf-key="2" data-xf-click="menu" data-menu-pos-ref="< .p-navEl" class="p-navEl-splitTrigger" role="button" tabindex="0" aria-label="Toggle expanded" aria-expanded="false" aria-haspopup="true"></a> <div class="menu menu--structural" data-menu="menu" aria-hidden="true"> <div class="menu-content"> <a href="/whats-new/posts/" class="menu-linkRow u-indentDepth0 js-offCanvasCopy " rel="nofollow" data-nav-id="whatsNewPosts">New posts</a> <a href="/whats-new/media/" class="menu-linkRow u-indentDepth0 js-offCanvasCopy " rel="nofollow" data-nav-id="xfmgWhatsNewNewMedia">New media</a> <a href="/whats-new/media-comments/" class="menu-linkRow u-indentDepth0 js-offCanvasCopy " rel="nofollow" data-nav-id="xfmgWhatsNewMediaComments">New media comments</a> <a href="/whats-new/resources/" class="menu-linkRow u-indentDepth0 js-offCanvasCopy " rel="nofollow" data-nav-id="xfrmNewResources">New resources</a> <a href="/whats-new/latest-activity" class="menu-linkRow u-indentDepth0 js-offCanvasCopy " rel="nofollow" data-nav-id="latestActivity">Latest activity</a> </div> </div> </div> </li> <li class="navxfrm"> <div class="p-navEl is-selected" data-has-children="true"> <a href="/articles/" class="p-navEl-link p-navEl-link--splitMenu " data-nav-id="xfrm">Electronic Projects</a> <a data-xf-key="3" data-xf-click="menu" data-menu-pos-ref="< .p-navEl" class="p-navEl-splitTrigger" role="button" tabindex="0" aria-label="Toggle expanded" aria-expanded="false" aria-haspopup="true"></a> <div class="menu menu--structural" data-menu="menu" aria-hidden="true"> <div class="menu-content"> <a href="/articles/?order=rating_weighted" class="menu-linkRow u-indentDepth0 js-offCanvasCopy " data-nav-id="ArticlesTop">Top Articles</a> <a href="/search/?type=resource" class="menu-linkRow u-indentDepth0 js-offCanvasCopy " data-nav-id="xfrmSearchResources">Search resources</a> </div> </div> </div> </li> <li class="navmembers"> <div class="p-navEl " data-has-children="true"> <a href="/members/" class="p-navEl-link p-navEl-link--splitMenu " data-nav-id="members">Members</a> <a data-xf-key="4" data-xf-click="menu" data-menu-pos-ref="< .p-navEl" class="p-navEl-splitTrigger" role="button" tabindex="0" aria-label="Toggle expanded" aria-expanded="false" aria-haspopup="true"></a> <div class="menu menu--structural" data-menu="menu" aria-hidden="true"> <div class="menu-content"> <a href="/online/" class="menu-linkRow u-indentDepth0 js-offCanvasCopy " data-nav-id="currentVisitors">Current visitors</a> </div> </div> </div> </li> <li class="navEEResources"> <div class="p-navEl " data-has-children="true"> <a href="#" class="p-navEl-link p-navEl-link--splitMenu " data-nav-id="EEResources">EE Resources</a> <a data-xf-key="5" data-xf-click="menu" data-menu-pos-ref="< .p-navEl" class="p-navEl-splitTrigger" role="button" tabindex="0" aria-label="Toggle expanded" aria-expanded="false" aria-haspopup="true"></a> <div class="menu menu--structural" data-menu="menu" aria-hidden="true"> <div class="menu-content"> <a href="https://www.designfast.com/" class="menu-linkRow u-indentDepth0 js-offCanvasCopy " target="_blank" data-nav-id="DesignFast2">DesignFast</a> <a href="https://www.eeworldonline.com/category/tech-tips/" class="menu-linkRow u-indentDepth0 js-offCanvasCopy " target="_blank" data-nav-id="Ebooks">Ebooks / Tech Tips</a> <a href="https://www.eeworldonline.com/category/faq/" class="menu-linkRow u-indentDepth0 js-offCanvasCopy " target="_blank" data-nav-id="FAQs">FAQs</a> <a href="https://www.eeworldonline.com/leadership-in-engineering-achievement-program-leap-awards/" class="menu-linkRow u-indentDepth0 js-offCanvasCopy " target="_blank" data-nav-id="Leap">LEAP Awards</a> <a href="https://products.designworldonline.com/products/oscilloscopes.html" class="menu-linkRow u-indentDepth0 js-offCanvasCopy " target="_blank" data-nav-id="Oscilloscope">Oscilloscope Product Finder</a> <a href="https://www.eeworldonline.com/category/podcasts/" class="menu-linkRow u-indentDepth0 js-offCanvasCopy " target="_blank" data-nav-id="EEpodcasts">EE Podcasts</a> <a href="https://www.eeworldonline.com/category/webinars/" class="menu-linkRow u-indentDepth0 js-offCanvasCopy " target="_blank" data-nav-id="webinar">EE Webinars</a> <a href="https://www.engineeringwhitepapers.com/category/electricalelectronic/" class="menu-linkRow u-indentDepth0 js-offCanvasCopy " target="_blank" data-nav-id="WhitePapers">EE Whitepapers</a> <a href="https://www.eeworldonline.com/videos" class="menu-linkRow u-indentDepth0 js-offCanvasCopy " target="_blank" data-nav-id="EEVideos">EE Videos</a> <a href="/blogs/" class="menu-linkRow u-indentDepth0 js-offCanvasCopy " data-nav-id="Blogs">Blogs</a> </div> </div> </div> </li> </ul> </div> </div> <div class="p-nav-opposite"> <div class="p-navgroup p-account p-navgroup--guest"> <a href="/login/" class="p-navgroup-link p-navgroup-link--textual p-navgroup-link--logIn" data-xf-click="overlay" data-follow-redirects="on"> <span class="p-navgroup-linkText">Log in</span> </a> <a href="/register/" class="p-navgroup-link p-navgroup-link--textual p-navgroup-link--register" data-xf-click="overlay" data-follow-redirects="on"> <span class="p-navgroup-linkText">Register</span> </a> </div> <div class="p-navgroup p-discovery"> <a href="/whats-new/" class="p-navgroup-link p-navgroup-link--iconic p-navgroup-link--whatsnew" aria-label="What's new" title="What's new"> <i aria-hidden="true"></i> <span class="p-navgroup-linkText">What's new</span> </a> <a href="/search/" class="p-navgroup-link p-navgroup-link--iconic p-navgroup-link--search" data-xf-click="menu" data-xf-key="/" aria-label="Search" aria-expanded="false" aria-haspopup="true" title="Search"> <i aria-hidden="true"></i> <span class="p-navgroup-linkText">Search</span> </a> <div class="menu menu--structural menu--wide" data-menu="menu" aria-hidden="true"> <form action="/search/search" method="post" class="menu-content" data-xf-init="quick-search" data-autocomplete-filter="["resource","post"]"> <h3 class="menu-header">Search</h3> <div class="menu-row"> <div class="inputGroup inputGroup--joined"> <input type="text" class="input" name="keywords" placeholder="Search…" aria-label="Search" data-menu-autofocus="true" /> <select name="constraints" class="js-quickSearch-constraint input" aria-label="Search within"> <option value="">Everywhere</option> <option value="{"search_type":"resource"}">Electronic Projects</option> <option value="{"search_type":"resource","c":{"categories":[15],"child_categories":1}}" selected="selected">This category</option> </select> </div> </div> <div class="menu-row"> <label class="iconic"><input type="checkbox" name="c[container_only]" value="1" /><i aria-hidden="true"></i><span class="iconic-label">Search titles and first posts only</span></label> </div> <div class="menu-row"> <label class="iconic"><input type="checkbox" name="c[title_only]" value="1" /><i aria-hidden="true"></i><span class="iconic-label">Search titles only <span tabindex="0" role="button" data-xf-init="tooltip" data-trigger="hover focus click" title="Tags will also be searched in content where tags are supported"> <i class="fa--xf far fa-question-circle u-muted u-smaller" aria-hidden="true"></i> </span></span></label> </div> <div class="menu-row"> <div class="inputGroup"> <span class="inputGroup-text" id="ctrl_search_menu_by_member">By:</span> <input type="text" class="input" name="c[users]" data-xf-init="auto-complete" placeholder="Member" aria-labelledby="ctrl_search_menu_by_member" /> </div> </div> <div class="menu-footer"> <span class="menu-footer-controls"> <button type="submit" class="button--primary button button--icon button--icon--search"><span class="button-text">Search</span></button> <a href="/search/" class="button"><span class="button-text">Advanced search…</span></a> </span> </div> <input type="hidden" name="_xfToken" value="1732695537,04e82f9215272e48ef94117f0280b931" /> </form> </div> </div> </div> </div> </nav> </div> <div class="p-sectionLinks--wrapper"> <div class="p-sectionLinks"> <div class="p-sectionLinks-inner"> <div class="hScroller" data-xf-init="h-scroller"> <div class="hScroller-scroll"> <ul class="p-sectionLinks-list"> <li> <div class="p-navEl " > <a href="/articles/?order=rating_weighted" class="p-navEl-link " data-xf-key="alt+1" data-nav-id="ArticlesTop">Top Articles</a> </div> </li> <li> <div class="p-navEl " > <a href="/search/?type=resource" class="p-navEl-link " data-xf-key="alt+2" data-nav-id="xfrmSearchResources">Search resources</a> </div> </li> </ul> </div> </div> <div class="p-sectionLinks-right"> </div> </div> </div> </div> <div class="offCanvasMenu offCanvasMenu--nav js-headerOffCanvasMenu" data-menu="menu" aria-hidden="true" data-ocm-builder="navigation"> <div class="offCanvasMenu-backdrop" data-menu-close="true"></div> <div class="offCanvasMenu-content"> <div class="offCanvasMenu-content--inner"> <div class="offCanvasMenu-header"> Menu <a class="offCanvasMenu-closer" data-menu-close="true" role="button" tabindex="0" aria-label="Close"></a> </div> <div class="p-offCanvasRegisterLink"> <div class="offCanvasMenu-linkHolder"> <a href="/login/" class="offCanvasMenu-link" data-xf-click="overlay" data-menu-close="true"> Log in </a> </div> <hr class="offCanvasMenu-separator" /> <div class="offCanvasMenu-linkHolder"> <a href="/register/" class="offCanvasMenu-link" data-xf-click="overlay" data-menu-close="true"> Register </a> </div> <hr class="offCanvasMenu-separator" /> </div> <div class="offCanvasMenu-subHeader">Navigation</div> <div class="js-offCanvasNavTarget"></div> <div class="offCanvasMenu-installBanner js-installPromptContainer" style="display: none;" data-xf-init="install-prompt"> <div class="offCanvasMenu-installBanner-header">Install the app</div> <button type="button" class="js-installPromptButton button"><span class="button-text">Install</span></button> <template class="js-installTemplateIOS"> <div class="overlay-title">How to install the app on iOS</div> <div class="block-body"> <div class="block-row"> <p> Follow along with the video below to see how to install our site as a web app on your home screen. </p> <p style="text-align: center"> <video src="/styles/default/xenforo/add_to_home.mp4" width="280" height="480" autoplay loop muted playsinline></video> </p> <p> <small><strong>Note:</strong> This feature may not be available in some browsers.</small> </p> </div> </div> </template> </div> <div class="offCanvasMenu-subHeader">More options</div> <div class="offCanvasMenu-linkHolder"> <a href="/misc/contact" class="offCanvasMenu-link" data-menu-close="true" data-nav-id="contactUs" data-xf-click="overlay">Contact us</a> </div> <div class="offCanvasMenu-linkHolder"> <a class="offCanvasMenu-link" data-menu-close="true" data-nav-id="closeMenu" role="button" tabindex="0" aria-label="Close">Close Menu</a> </div> </div> </div> </div> <div class="p-body"> <div class="p-body-inner"> <div class="xb-welcome-notice"> <div class="xb-welcome-notice--mask"> <div class="xb-welcome-notice--inner"> <div class="xb-welcome-notice--title"> <h3>Welcome to our site!</h3> <h4>Electro Tech is an online community (with over 170,000 members) who enjoy talking about and building electronic circuits, projects and gadgets. To participate you need to register. Registration is free. <a href="/register">Click here to register now</a>.</h4> </div> <div class="xb-welcome-notice--buttons"> <a href="/register/" class="button" data-xf-click="overlay" data-follow-redirects="on"><span class="button-text">Register</span></a> <a href="/login/" class="button--cta button" rel="nofollow" data-xf-click="overlay" data-menu-close="true"> <span class="button-text">Log in</span> </a> </div> </div> </div> </div>  <ul class="notices notices--block js-notices" data-xf-init="notices" data-type="block" data-scroll-interval="6"> <li class="notice js-notice notice--primary" data-notice-id="3" data-delay-duration="0" data-display-duration="0" data-auto-dismiss="" data-visibility=""> <div class="notice-content"> <a href="/account/dismiss-notice?notice_id=3" class="notice-dismiss js-noticeDismiss" data-xf-init="tooltip" title="Dismiss notice"></a> Welcome to our site! Electro Tech is an online community (with over 170,000 members) who enjoy talking about and building electronic circuits, projects and gadgets. To participate you need to register. Registration is free. <a href="/register">Click here to register now</a>. </div> </li> </ul> <center><div id='div-gpt-eto-header'> <script> googletag.cmd.push(function() { googletag.display('div-gpt-eto-header'); }); </script> </div></center> <div class="p-breadcrumbs--parent "> <ul class="p-breadcrumbs " itemscope itemtype="https://schema.org/BreadcrumbList"> <li itemprop="itemListElement" itemscope itemtype="https://schema.org/ListItem"> <a href="/articles/" itemprop="item"> <span itemprop="name">Electronic Projects</span> </a> <meta itemprop="position" content="1" /> </li> <li itemprop="itemListElement" itemscope itemtype="https://schema.org/ListItem"> <a href="/articles/categories/electronic-projects.2/" itemprop="item"> <span itemprop="name">Electronic Projects</span> </a> <meta itemprop="position" content="2" /> </li> <li itemprop="itemListElement" itemscope itemtype="https://schema.org/ListItem"> <a href="/articles/categories/power-supply.15/" itemprop="item"> <span itemprop="name">Power Supply</span> </a> <meta itemprop="position" content="3" /> </li> </ul> </div> <noscript class="js-jsWarning"><div class="blockMessage blockMessage--important blockMessage--iconic u-noJsOnly">JavaScript is disabled. For a better experience, please enable JavaScript in your browser before proceeding.</div></noscript> <div class="blockMessage blockMessage--important blockMessage--iconic js-browserWarning" style="display: none">You are using an out of date browser. It may not display this or other websites correctly.<br />You should upgrade or use an <a href="https://www.google.com/chrome/" target="_blank" rel="noopener">alternative browser</a>.</div> <div class="p-body-header"> <div class="contentRow contentRow--hideFigureNarrow"> <span class="contentRow-figure"> <span class="avatar avatar--s avatar--resourceIconDefault"><span></span><span class="u-srOnly">Resource icon</span></span> </span> <div class="contentRow-main"> <div class="p-title"> <h1 class="p-title-value"> DIY 85-260VAC to Dual +/-15VDC-0.5A Switching Power Supply </h1> </div> <div class="p-description"> <ul class="listInline listInline--bullet"> <li> <i class="fa--xf fal fa-user" aria-hidden="true" title="Author"></i> <span class="u-srOnly">Author</span> <a href="/members/hesam_m.109027/" class="username u-concealed" dir="auto" data-user-id="109027" data-xf-init="member-tooltip">hesam_m</a> </li> <li> <i class="fa--xf fal fa-clock" aria-hidden="true" title="Creation date"></i> <span class="u-srOnly">Creation date</span> <a href="/articles/diy-85-260vac-to-dual-15vdc-0-5a-switching-power-supply.1024/" class="u-concealed"><time class="u-dt" dir="auto" datetime="2024-09-27T03:58:00-0700" data-time="1727434680" data-date-string="Sep 27, 2024" data-time-string="3:58 AM" title="Sep 27, 2024 at 3:58 AM">Sep 27, 2024</time></a> </li> </ul> </div> </div> </div> </div> <div class="p-body-main p-body-main--withSidebar "> <div class="p-body-contentCol"></div> <div class="p-body-sidebarCol"></div> <div class="p-body-content"> <div class="p-body-pageContent"> <script class="js-extraPhrases" type="application/json"> { "lightbox_close": "Close", "lightbox_next": "Next", "lightbox_previous": "Previous", "lightbox_error": "The requested content cannot be loaded. Please try again later.", "lightbox_start_slideshow": "Start slideshow", "lightbox_stop_slideshow": "Stop slideshow", "lightbox_full_screen": "Full screen", "lightbox_thumbnails": "Thumbnails", "lightbox_download": "Download", "lightbox_share": "Share", "lightbox_zoom": "Zoom", "lightbox_new_window": "New window", "lightbox_toggle_sidebar": "Toggle sidebar" } </script> <div class="block"> <div class="block-container"> <div class="block-body lbContainer js-resourceBody" data-xf-init="lightbox" data-lb-id="resource-1024" data-lb-caption-desc="hesam_m · Sep 27, 2024 at 3:58 AM"> <div class="resourceBody"> <article class="resourceBody-main js-lbContainer"> <div class="bbWrapper">This video introduces an AC-to-DC Flyback switching power supply that converts universal 50Hz AC input (85-V to 260VAC) to dual-output (positive and negative) 15VDC to 0.5A (2*7.5W), which can be used in various applications, such as powering...</div> <div class="block-rowMessage block-rowMessage--important"> You do not have permission to view the full content of this resource. <a href="/login/" data-xf-click="overlay">Log in or register now.</a> </div> <div class="reactionsBar js-reactionsList "> </div> </article> <div class="resourceBody-sidebar"> <div class="resourceSidebarGroup"> <dl class="pairs pairs--justified"> <dt>Author</dt> <dd><a href="/members/hesam_m.109027/" class="username " dir="auto" data-user-id="109027" data-xf-init="member-tooltip">hesam_m</a></dd> </dl> <dl class="pairs pairs--justified"> <dt>Views</dt> <dd>888</dd> </dl> <dl class="pairs pairs--justified"> <dt>First release</dt> <dd><time class="u-dt" dir="auto" datetime="2024-09-27T03:58:00-0700" data-time="1727434680" data-date-string="Sep 27, 2024" data-time-string="3:58 AM" title="Sep 27, 2024 at 3:58 AM">Sep 27, 2024</time></dd> </dl> <dl class="pairs pairs--justified"> <dt>Last update</dt> <dd><time class="u-dt" dir="auto" datetime="2024-09-27T03:58:00-0700" data-time="1727434680" data-date-string="Sep 27, 2024" data-time-string="3:58 AM" title="Sep 27, 2024 at 3:58 AM">Sep 27, 2024</time></dd> </dl> <dl class="pairs pairs--justified"> <dt>Rating</dt> <dd> <span class="ratingStarsRow ratingStarsRow--textBlock"> <span class="ratingStars " title="0.00 star(s)"> <span class="ratingStars-star"></span> <span class="ratingStars-star"></span> <span class="ratingStars-star"></span> <span class="ratingStars-star"></span> <span class="ratingStars-star"></span> <span class="u-srOnly">0.00 star(s)</span> </span> <span class="ratingStarsRow-text"> 0 ratings </span> </span> </dd> </dl> </div> <div class="resourceSidebarGroup"> <h4 class="resourceSidebarGroup-title"> <a href="/articles/authors/hesam_m.109027/">More resources from hesam_m</a> </h4> <ul class="resourceSidebarList"> <li> <div class="contentRow"> <div class="contentRow-figure"> <a href="/articles/1a-usb-type-c-lithium-battery-charger-with-protection.1025/" class="avatar avatar--xxs avatar--resourceIconDefault"><span></span><span class="u-srOnly">Resource icon</span></a> </div> <div class="contentRow-main contentRow-main--close"> <a href="/articles/1a-usb-type-c-lithium-battery-charger-with-protection.1025/">1A USB Type-C Lithium Battery Charger (With Protection)</a> <div class="contentRow-lesser">1A USB Type-C Lithium Battery Charger (With Protection)</div> </div> </div> </li> <li> <div class="contentRow"> <div class="contentRow-figure"> <a href="/articles/transformerless-85-260v-ac-to-12v-dc-power-supply.1021/" class="avatar avatar--xxs avatar--resourceIconDefault"><span></span><span class="u-srOnly">Resource icon</span></a> </div> <div class="contentRow-main contentRow-main--close"> <a href="/articles/transformerless-85-260v-ac-to-12v-dc-power-supply.1021/">Transformerless 85-260V-AC to 12V-DC Power Supply</a> <div class="contentRow-lesser">Transformerless 85-260V-AC to 12V-DC Power Supply</div> </div> </div> </li> <li> <div class="contentRow"> <div class="contentRow-figure"> <a href="/articles/diy-ac-to-dc-12v-flyback-smps-for-beginners.1019/" class="avatar avatar--xxs avatar--resourceIconDefault"><span></span><span class="u-srOnly">Resource icon</span></a> </div> <div class="contentRow-main contentRow-main--close"> <a href="/articles/diy-ac-to-dc-12v-flyback-smps-for-beginners.1019/">DIY AC-to-DC 12V Flyback SMPS For Beginners</a> <div class="contentRow-lesser">DIY AC-to-DC 12V Flyback SMPS For Beginners</div> </div> </div> </li> <li> <div class="contentRow"> <div class="contentRow-figure"> <a href="/articles/dc-to-dc-boost-converter-circuit-using-xl6019.1018/" class="avatar avatar--xxs avatar--resourceIconDefault"><span></span><span class="u-srOnly">Resource icon</span></a> </div> <div class="contentRow-main contentRow-main--close"> <a href="/articles/dc-to-dc-boost-converter-circuit-using-xl6019.1018/">DC to DC Boost Converter Circuit Using XL6019</a> <div class="contentRow-lesser">DC to DC Boost Converter Circuit Using XL6019</div> </div> </div> </li> <li> <div class="contentRow"> <div class="contentRow-figure"> <a href="/articles/diy-adjustable-digital-dc-load-circuit.1016/" class="avatar avatar--xxs avatar--resourceIconDefault"><span></span><span class="u-srOnly">Resource icon</span></a> </div> <div class="contentRow-main contentRow-main--close"> <a href="/articles/diy-adjustable-digital-dc-load-circuit.1016/">DIY Adjustable Digital DC Load Circuit</a> <div class="contentRow-lesser">DIY Adjustable Digital DC Load Circuit</div> </div> </div> </li> </ul> </div> <div class="resourceSidebarGroup"> <h4 class="resourceSidebarGroup-title">Share this resource</h4> <div class="shareButtons shareButtons--iconic" data-xf-init="share-buttons" data-page-url="" data-page-title="" data-page-desc="" data-page-image=""> <div class="shareButtons-buttons"> <a class="shareButtons-button shareButtons-button--brand shareButtons-button--facebook" data-href="https://www.facebook.com/sharer.php?u={url}"> <i aria-hidden="true"></i> <span>Facebook</span> </a> <a class="shareButtons-button shareButtons-button--brand shareButtons-button--twitter" data-href="https://twitter.com/intent/tweet?url={url}&text={title}&via=ETONetwork&related=ETONetwork"> <svg xmlns="http://www.w3.org/2000/svg" height="1em" viewBox="0 0 512 512" class=""><path d="M389.2 48h70.6L305.6 224.2 487 464H345L233.7 318.6 106.5 464H35.8L200.7 275.5 26.8 48H172.4L272.9 180.9 389.2 48zM364.4 421.8h39.1L151.1 88h-42L364.4 421.8z"/></svg> <span>X (Twitter)</span> </a> <a class="shareButtons-button shareButtons-button--brand shareButtons-button--whatsApp" data-href="https://api.whatsapp.com/send?text={title} {url}"> <i aria-hidden="true"></i> <span>WhatsApp</span> </a> <a class="shareButtons-button shareButtons-button--email" data-href="mailto:?subject={title}&body={url}"> <i aria-hidden="true"></i> <span>Email</span> </a> <a class="shareButtons-button shareButtons-button--share is-hidden" data-xf-init="web-share" data-title="" data-text="" data-url="" data-hide=".shareButtons-button:not(.shareButtons-button--share)"> <i aria-hidden="true"></i> <span>Share</span> </a> <a class="shareButtons-button shareButtons-button--link is-hidden" data-clipboard="{url}"> <i aria-hidden="true"></i> <span>Link</span> </a> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> <div class="p-sidebarWrapper"> <div class="p-body-sidebar"> <div id='div-gpt-eto_customsearchbox'> <script> googletag.cmd.push(function() { googletag.display('div-gpt-eto_customsearchbox'); }); </script> </div> <div class="block" data-widget-id="10" data-widget-key="sidebarthreads" data-widget-definition="new_threads"> <div class="block-container"> <h3 class="block-minorHeader"> <a href="/whats-new/" rel="nofollow">Latest threads</a> </h3> <ul class="block-body"> <li class="block-row"> <div class="contentRow"> <div class="contentRow-figure"> <a href="/members/romromillys.328129/" class="avatar avatar--xxs avatar--default avatar--default--dynamic" data-user-id="328129" data-xf-init="member-tooltip" style="background-color: #666633; color: #c3c388"> <span class="avatar-u328129-s" role="img" aria-label="romromillys">R</span> </a> </div> <div class="contentRow-main contentRow-main--close"> <a href="/threads/clear-black-screen-with-green-backlight-on-oled-display.166948/">Clear Black Screen with Green Backlight on OLED Display</a> <div class="contentRow-minor contentRow-minor--hideLinks"> <ul class="listInline listInline--bullet"> <li>Started by romromillys</li> <li><time class="u-dt" dir="auto" datetime="2024-11-25T22:35:12-0800" data-time="1732602912" data-date-string="Nov 25, 2024" data-time-string="10:35 PM" title="Nov 25, 2024 at 10:35 PM">Monday at 10:35 PM</time></li> <li>Replies: 0</li> </ul> </div> <div class="contentRow-minor contentRow-minor--hideLinks"> <a href="/forums/general-electronics-chat/">General Electronics Chat</a> </div> </div> </div> </li> <li class="block-row"> <div class="contentRow"> <div class="contentRow-figure"> <a href="/members/jb33.327169/" class="avatar avatar--xxs avatar--default avatar--default--dynamic" data-user-id="327169" data-xf-init="member-tooltip" style="background-color: #cccc99; color: #77773c"> <span class="avatar-u327169-s" role="img" aria-label="jb33">J</span> </a> </div> <div class="contentRow-main contentRow-main--close"> <a href="/threads/power-resistor.166947/">Power Resistor</a> <div class="contentRow-minor contentRow-minor--hideLinks"> <ul class="listInline listInline--bullet"> <li>Started by jb33</li> <li><time class="u-dt" dir="auto" datetime="2024-11-25T07:41:33-0800" data-time="1732549293" data-date-string="Nov 25, 2024" data-time-string="7:41 AM" title="Nov 25, 2024 at 7:41 AM">Monday at 7:41 AM</time></li> <li>Replies: 4</li> </ul> </div> <div class="contentRow-minor contentRow-minor--hideLinks"> <a href="/forums/general-electronics-chat/">General Electronics Chat</a> </div> </div> </div> </li> <li class="block-row"> <div class="contentRow"> <div class="contentRow-figure"> <a href="/members/kisen.276241/" class="avatar avatar--xxs avatar--default avatar--default--dynamic" data-user-id="276241" data-xf-init="member-tooltip" style="background-color: #3d3d0f; color: #cccc33"> <span class="avatar-u276241-s" role="img" aria-label="Kisen">K</span> </a> </div> <div class="contentRow-main contentRow-main--close"> <a href="/threads/varying-voltage-in-a-circuit.166946/">Varying voltage in a circuit</a> <div class="contentRow-minor contentRow-minor--hideLinks"> <ul class="listInline listInline--bullet"> <li>Started by Kisen</li> <li><time class="u-dt" dir="auto" datetime="2024-11-25T07:16:45-0800" data-time="1732547805" data-date-string="Nov 25, 2024" data-time-string="7:16 AM" title="Nov 25, 2024 at 7:16 AM">Monday at 7:16 AM</time></li> <li>Replies: 9</li> </ul> </div> <div class="contentRow-minor contentRow-minor--hideLinks"> <a href="/forums/general-electronics-chat/">General Electronics Chat</a> </div> </div> </div> </li> <li class="block-row"> <div class="contentRow"> <div class="contentRow-figure"> <a href="/members/ofosot69.327960/" class="avatar avatar--xxs avatar--default avatar--default--dynamic" data-user-id="327960" data-xf-init="member-tooltip" style="background-color: #cc3366; color: #f0c2d1"> <span class="avatar-u327960-s" role="img" aria-label="ofosot69">O</span> </a> </div> <div class="contentRow-main contentRow-main--close"> <a href="/threads/does-highly-sensitive-radio-receivers-encounters-less-fading.166945/">Does highly sensitive radio receivers encounters less fading</a> <div class="contentRow-minor contentRow-minor--hideLinks"> <ul class="listInline listInline--bullet"> <li>Started by ofosot69</li> <li><time class="u-dt" dir="auto" datetime="2024-11-25T02:58:08-0800" data-time="1732532288" data-date-string="Nov 25, 2024" data-time-string="2:58 AM" title="Nov 25, 2024 at 2:58 AM">Monday at 2:58 AM</time></li> <li>Replies: 1</li> </ul> </div> <div class="contentRow-minor contentRow-minor--hideLinks"> <a href="/forums/radio-communications/">Radio and Communications</a> </div> </div> </div> </li> <li class="block-row"> <div class="contentRow"> <div class="contentRow-figure"> <a href="/members/fuzzmitch.324951/" class="avatar avatar--xxs avatar--default avatar--default--dynamic" data-user-id="324951" data-xf-init="member-tooltip" style="background-color: #d65cb8; color: #661a53"> <span class="avatar-u324951-s" role="img" aria-label="FuzzMitch">F</span> </a> </div> <div class="contentRow-main contentRow-main--close"> <a href="/threads/strat-guitar-pickguard-qc-chart-hieroglyphs.166944/">Strat Guitar pickguard QC Chart -Hieroglyphs?</a> <div class="contentRow-minor contentRow-minor--hideLinks"> <ul class="listInline listInline--bullet"> <li>Started by FuzzMitch</li> <li><time class="u-dt" dir="auto" datetime="2024-11-24T14:33:35-0800" data-time="1732487615" data-date-string="Nov 24, 2024" data-time-string="2:33 PM" title="Nov 24, 2024 at 2:33 PM">Sunday at 2:33 PM</time></li> <li>Replies: 0</li> </ul> </div> <div class="contentRow-minor contentRow-minor--hideLinks"> <a href="/forums/general-electronics-chat/">General Electronics Chat</a> </div> </div> </div> </li> </ul> </div> </div> <div id='div-gpt-eto_sidebar1'> <script> googletag.cmd.push(function() { googletag.display('div-gpt-eto_sidebar1'); }); </script> </div> <a href="https://www.eeworldonline.com/subscribe-eeworld-newsletter/" target="_new" style="padding-top:10px;padding-bottom:10px"> <img src="https://czdfw1kuw9n20zm0l7pmfb1a-wpengine.netdna-ssl.com/wp-content/uploads/2016/03/ee-enews-signup.jpg"> </a> <div id='div-gpt-eto_sidebarbottom'> <script> googletag.cmd.push(function() { googletag.display('div-gpt-eto_sidebarbottom'); }); </script> </div> <div class="block" data-widget-id="35" data-widget-key="rss_feed" data-widget-definition="rssFeed"> <div class="block-container"> <h3 class="block-minorHeader">New Articles From Microcontroller Tips</h3> <div class="block-body block-row"> <ul class="listHeap"> <li class="rssfeed-title"> <a href="https://www.microcontrollertips.com/long-range-wireless-mcu-features-132-dbm-sensitivity-at-300-bps/" target="_blank">Long-range wireless MCU features -132 dBm sensitivity at 300 bps</a> <div class="rssfeed-date"> Mon, 25 Nov 2024 10:26:06 PST </div> </li> <li class="rssfeed-title"> <a href="https://www.microcontrollertips.com/512-mbit-qspi-nor-flash-memory-operates-at-133-mhz-for-space-applications/" target="_blank">512 Mbit QSPI NOR Flash memory operates at 133 MHz for space applications</a> <div class="rssfeed-date"> Fri, 22 Nov 2024 12:14:47 PST </div> </li> <li class="rssfeed-title"> <a href="https://www.microcontrollertips.com/memory-controllers-support-12-8-gb-s-data-rates/" target="_blank">Memory controllers support 12.8 GB/s data rates</a> <div class="rssfeed-date"> Fri, 22 Nov 2024 11:24:37 PST </div> </li> </ul> </div> </div> </div> </div> </div> </div> <div class="p-breadcrumbs--parent p-breadcrumbs--bottom"> <ul class="p-breadcrumbs p-breadcrumbs--bottom" itemscope itemtype="https://schema.org/BreadcrumbList"> <li itemprop="itemListElement" itemscope itemtype="https://schema.org/ListItem"> <a href="/articles/" itemprop="item"> <span itemprop="name">Electronic Projects</span> </a> <meta itemprop="position" content="1" /> </li> <li itemprop="itemListElement" itemscope itemtype="https://schema.org/ListItem"> <a href="/articles/categories/electronic-projects.2/" itemprop="item"> <span itemprop="name">Electronic Projects</span> </a> <meta itemprop="position" content="2" /> </li> <li itemprop="itemListElement" itemscope itemtype="https://schema.org/ListItem"> <a href="/articles/categories/power-supply.15/" itemprop="item"> <span itemprop="name">Power Supply</span> </a> <meta itemprop="position" content="3" /> </li> </ul> </div> <div id='div-gpt-eto_interstitial'> <script> googletag.cmd.push(function() { googletag.display('div-gpt-eto_interstitial'); }); </script> </div> </div> </div> </div>  <footer class="p-footer" id="footer"> <div class="p-footer--container footer-stretched"> <div class="p-footer-copyright"> <div class="p-footer-inner"> <div class="p-footer-copyright--flex"> <div class="copyright-left"> Copyright © <script type="text/javascript">d = new Date();y = d.getFullYear();document.write(y);</script> WTWH Media, LLC. All Rights Reserved. </div> <div class="copyright-right"> <div class="p-footer-default"> <div class="p-footer-inner"> <div class="p-footer-row"> <div class="p-footer-row-main"> <ul class="p-footer-linkList"> <li class="p-linkList-changeWidth"><a class="pageWidthToggle xb-toggle-default" role="button" tabindex="0" data-xf-click="toggle" data-target="html" data-active-class="xb-toggle-default" data-xf-init="toggle-storage" data-storage-type="cookie" data-storage-expiry="31556926" data-storage-key="_xb-width"> Change width </a></li> </ul> </div> <div class="p-footer-row-opposite"> <ul class="p-footer-linkList"> <li><a href="/misc/contact" data-xf-click="overlay">Contact us</a></li> <li><a href="/help/terms/">Terms and rules</a></li> <li><a href="https://www.wtwhmedia.com/privacy-policy/">Privacy policy</a></li> <li><a href="/help/">Help</a></li> <li><a href="/forums/-/index.rss" target="_blank" class="p-footer-rssLink" title="RSS"><span aria-hidden="true"><i class="fa--xf fal fa-rss" aria-hidden="true"></i><span class="u-srOnly">RSS</span></span></a></li> </ul> </div> </div> </div> </div> </div> </div> </div> </div> </div> </footer> </div>  </div>  <div class="u-bottomFixer js-bottomFixTarget"> <ul class="notices notices--bottom_fixer js-notices" data-xf-init="notices" data-type="bottom_fixer" data-scroll-interval="6"> <li class="notice js-notice notice--primary notice--cookie" data-notice-id="-1" data-delay-duration="0" data-display-duration="0" data-auto-dismiss="0" data-visibility=""> <div class="notice-content"> <div class="u-alignCenter"> This site uses cookies to help personalise content, tailor your experience and to keep you logged in if you register.<br /> By continuing to use this site, you are consenting to our use of cookies. </div> <div class="u-inputSpacer u-alignCenter"> <a href="/account/dismiss-notice" class="js-noticeDismiss button--notice button button--icon button--icon--confirm"><span class="button-text">Accept</span></a> <a href="/help/cookies" class="button--notice button"><span class="button-text">Learn more…</span></a> </div> </div> </li> </ul> </div> <div class="u-navButtons js-navButtons" data-trigger-type="up"> <a href="javascript:" class="button--scroll button"><span class="button-text"><i class="fa--xf fal fa-arrow-left" aria-hidden="true"></i><span class="u-srOnly">Back</span></span></a> </div> <div class="u-scrollButtons js-scrollButtons" data-trigger-type="up"> <a href="#top" class="button--scroll button" data-xf-click="scroll-to"><span class="button-text"><i class="fa--xf fal fa-arrow-up" aria-hidden="true"></i><span class="u-srOnly">Top</span></span></a> </div> <script src="https://ajax.googleapis.com/ajax/libs/jquery/3.5.1/jquery.min.js"></script><script>window.jQuery || document.write('<script src="/js/vendor/jquery/jquery-3.5.1.min.js?_v=1977d1d7"><\/script>')</script> <script src="/js/vendor/vendor-compiled.js?_v=1977d1d7"></script> <script src="/js/xf/core-compiled.js?_v=1977d1d7"></script> <script src="/js/xf/lightbox-compiled.js?_v=1977d1d7"></script> <script src="/js/sv/ese/xf/structure.min.js?_v=1977d1d7"></script> <script src="/js/xf/notice.min.js?_v=1977d1d7"></script> <script src="/js/CMTV/Math/preview-observer.min.js?_v=1977d1d7"></script> <script src="/js/CMTV/Math/selector-resolver.min.js?_v=1977d1d7"></script> <script src="/js/XenCentral/PrestitialAds/adlogic.js?_v=1977d1d7"></script> <script> $(".xb-searchWrapper").on("click", function(event) { $(".xb-searchWrapper").addClass("is-active"); event.stopPropagation(); }); $(".xb-searchWrapper").on("click", function(event) { event.stopPropagation(); }); $(document).on("click", function(event) { $(".xb-searchWrapper").removeClass("is-active"); }); </script> <script type="text/x-mathjax-config"> MathJax.Hub.Config({ // CMTV_Math_MathJax_CONFIG_START tex2jax: { processClass: "mathjax-proceed", ignoreClass: "mathjax-skip" }, asciimath2jax: { processClass: "mathjax-proceed", ignoreClass: "mathjax-skip" }, showMathMenu: 1, messageStyle: "none", displayAlign: "center", // CMTV_Math_MathJax_CONFIG_END }); </script> <script class="js-CMTV_Math_renderOptions" type="application/json">{"where":"positions","positions":{"titles":1,"content":1,"pages":1,"signatures":1,"about":1}}</script> <script class="js-CMTV_Math_customRenderSelectors" type="application/json">[]</script> <script class="js-CMTV_Math_customSkipSelectors" type="application/json">[]</script> <script class="js-CMTV_Math_predefinedSelectors" type="application/json"> { "titles": [ ".p-title-value", ".contentRow-title", ".p-body-sidebar .contentRow-main > a", ".resourceSidebarList .contentRow-main > a", ".node-extra-title", ".structItem-title" ], "content": [ ".message-body", ".contentRow-snippet", ".tooltip-content", ".resourceBody-main", ".structItem-resourceTagLine", ".bbCodePreview-content", ".comment-body", "[data-widget-definition='new_profile_posts'] .contentRow-faderContent" ], "pages": [ "[data-template='help_page'] .p-body-pageContent", "[data-template='help_page'] .p-body-sideNavContent", "[data-template='help_index'] .p-body-pageContent", "[data-template='help_index'] .p-body-sideNavContent" ], "signatures": [ ".message-signature", "[data-template=member_view] .block-row:contains(Signature)" ], "about": [ "[data-template=member_view] .block-row:first-of-type" ], "skipDefault": [ ".bbCodeBlock", ".bbCodeInline", ".fr-box" ] } </script> <script>CMTV_Math.SResolver.resolve();</script> <script src="https://cdnjs.cloudflare.com/ajax/libs/mathjax/2.7.5/latest.js?config=TeX-MML-AM_CHTML&locale=en" async></script> <script> jQuery.extend(true, XF.config, { // userId: 0, enablePush: false, pushAppServerKey: '', url: { fullBase: 'https://www.electro-tech-online.com/', basePath: '/', css: '/css.php?css=__SENTINEL__&s=8&l=1&d=1708496185', keepAlive: '/login/keep-alive' }, cookie: { path: '/', domain: '', prefix: 'xf_', secure: true, consentMode: 'simple', consented: ["optional","_third_party"] }, cacheKey: '461d5857f62033221874019026e21196', csrf: '1732695537,04e82f9215272e48ef94117f0280b931', js: {"\/js\/xf\/lightbox-compiled.js?_v=1977d1d7":true,"\/js\/sv\/ese\/xf\/structure.min.js?_v=1977d1d7":true,"\/js\/xf\/notice.min.js?_v=1977d1d7":true,"\/js\/CMTV\/Math\/preview-observer.min.js?_v=1977d1d7":true,"\/js\/CMTV\/Math\/selector-resolver.min.js?_v=1977d1d7":true,"\/js\/XenCentral\/PrestitialAds\/adlogic.js?_v=1977d1d7":true}, css: {"public:CMTV_Math.less":true,"public:andy_rssfeed.less":true,"public:lightbox.less":true,"public:notices.less":true,"public:rating_stars.less":true,"public:share_controls.less":true,"public:svESE_autocomplete.less":true,"public:xb.less":true,"public:xb_search.less":true,"public:xb_welcome.less":true,"public:xcpa_main.css":true,"public:xcpa_prestitial.css":true,"public:xfrm.less":true,"public:extra.less":true}, time: { now: 1732695537, today: 1732694400, todayDow: 3, tomorrow: 1732780800, yesterday: 1732608000, week: 1732176000 }, borderSizeFeature: '3px', fontAwesomeWeight: 'l', enableRtnProtect: true, enableFormSubmitSticky: true, uploadMaxFilesize: 268435456, allowedVideoExtensions: ["m4v","mov","mp4","mp4v","mpeg","mpg","ogv","webm"], allowedAudioExtensions: ["mp3","opus","ogg","wav"], shortcodeToEmoji: true, visitorCounts: { conversations_unread: '0', alerts_unviewed: '0', total_unread: '0', title_count: true, icon_indicator: true }, jsState: {}, publicMetadataLogoUrl: '', publicPushBadgeUrl: 'https://www.electro-tech-online.com/styles/default/xenforo/bell.png' }); jQuery.extend(XF.phrases, { // date_x_at_time_y: "{date} at {time}", day_x_at_time_y: "{day} at {time}", yesterday_at_x: "Yesterday at {time}", x_minutes_ago: "{minutes} minutes ago", one_minute_ago: "1 minute ago", a_moment_ago: "A moment ago", today_at_x: "Today at {time}", in_a_moment: "In a moment", in_a_minute: "In a minute", in_x_minutes: "In {minutes} minutes", later_today_at_x: "Later today at {time}", tomorrow_at_x: "Tomorrow at {time}", day0: "Sunday", day1: "Monday", day2: "Tuesday", day3: "Wednesday", day4: "Thursday", day5: "Friday", day6: "Saturday", dayShort0: "Sun", dayShort1: "Mon", dayShort2: "Tue", dayShort3: "Wed", dayShort4: "Thu", dayShort5: "Fri", dayShort6: "Sat", month0: "January", month1: "February", month2: "March", month3: "April", month4: "May", month5: "June", month6: "July", month7: "August", month8: "September", month9: "October", month10: "November", month11: "December", active_user_changed_reload_page: "The active user has changed. Reload the page for the latest version.", server_did_not_respond_in_time_try_again: "The server did not respond in time. Please try again.", oops_we_ran_into_some_problems: "Oops! We ran into some problems.", oops_we_ran_into_some_problems_more_details_console: "Oops! We ran into some problems. Please try again later. More error details may be in the browser console.", file_too_large_to_upload: "The file is too large to be uploaded.", uploaded_file_is_too_large_for_server_to_process: "The uploaded file is too large for the server to process.", files_being_uploaded_are_you_sure: "Files are still being uploaded. Are you sure you want to submit this form?", attach: "Attach files", rich_text_box: "Rich text box", close: "Close", link_copied_to_clipboard: "Link copied to clipboard.", text_copied_to_clipboard: "Text copied to clipboard.", loading: "Loading…", you_have_exceeded_maximum_number_of_selectable_items: "You have exceeded the maximum number of selectable items.", processing: "Processing", 'processing...': "Processing…", showing_x_of_y_items: "Showing {count} of {total} items", showing_all_items: "Showing all items", no_items_to_display: "No items to display", number_button_up: "Increase", number_button_down: "Decrease", push_enable_notification_title: "Push notifications enabled successfully at Electronics Forum (Circuits, Projects and Microcontrollers)", push_enable_notification_body: "Thank you for enabling push notifications!", pull_down_to_refresh: "Pull down to refresh", release_to_refresh: "Release to refresh", refreshing: "Refreshing…" , "svStandardLib_time.day": "{count} day", "svStandardLib_time.days": "{count} days", "svStandardLib_time.hour": "{count} hour", "svStandardLib_time.hours": "{count} hours", "svStandardLib_time.minute": "{count} minutes", "svStandardLib_time.minutes": "{count} minutes", "svStandardLib_time.month": "{count} month", "svStandardLib_time.months": "{count} months", "svStandardLib_time.second": "{count} second", "svStandardLib_time.seconds": "{count} seconds", "svStandardLib_time.week": "time.week", "svStandardLib_time.weeks": "{count} weeks", "svStandardLib_time.year": "{count} year", "svStandardLib_time.years": "{count} years" }); </script> <form style="display:none" hidden="hidden"> <input type="text" name="_xfClientLoadTime" value="" id="_xfClientLoadTime" title="_xfClientLoadTime" tabindex="-1" /> </form>    <div id='div-gpt-eto_wallpaper'> <script> googletag.cmd.push(function() { googletag.display('div-gpt-eto_wallpaper'); }); </script> </div>  <script type="application/ld+json"> { "@context": "https://schema.org", "@type": "CreativeWork", "@id": "https:\/\/www.electro-tech-online.com\/articles\/diy-85-260vac-to-dual-15vdc-0-5a-switching-power-supply.1024\/", "name": "DIY 85-260VAC to Dual +\/-15VDC-0.5A Switching Power Supply", "headline": "DIY 85-260VAC to Dual +\/-15VDC-0.5A Switching Power Supply", "alternativeHeadline": "DIY 85-260VAC to Dual +\/-15VDC-0.5A Switching Power Supply", "description": "This video introduces an AC-to-DC Flyback switching power supply that converts universal 50Hz AC input (85-V to 260VAC) to dual-output (positive and negative) 15VDC to 0.5A (2*7.5W), which can be used in various applications, such as powering...", "dateCreated": "2024-09-27T03:58:00-07:00", "dateModified": "2024-09-27T03:58:00-07:00", "author": { "@type": "Person", "name": "hesam_m" } } </script>  <noscript><iframe src="https://www.googletagmanager.com/ns.html?id=GTM-MMC9PJ9" height="0" width="0" style="display:none;visibility:hidden"></iframe></noscript>   <noscript><iframe src="https://www.googletagmanager.com/ns.html?id=GTM-KLX5R59" height="0" width="0" style="display:none;visibility:hidden"></iframe></noscript>  <script> $(function(){ var notice = $('.xb-welcome-notice'); if(notice.length){ var cookie = XF.Cookie.get('hide_welcome_notice'); if(!cookie){ XF.Cookie.set('hide_welcome_notice', Date.now()); notice.show(); } else if ((Date.now() - cookie) > 8.64e+7){ XF.Cookie.set('hide_welcome_notice', Date.now()); notice.show(); } else { notice.hide(); } } }); </script> </div> </body> </html>

CINXE.COM

DIY 85-260VAC to Dual +/-15VDC-0.5A Switching Power Supply | Electronics Forum (Circuits, Projects and Microcontrollers)