Identify DC gain and DC operations point of Floating inverter amplifier

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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="p-title "> <h1 class="p-title-value">Identify DC gain and DC operations point of Floating inverter amplifier</h1> </div> <div class="p-description"> <ul class="listInline listInline--bullet"> <li> <i class="fa--xf fal fa-user" aria-hidden="true" title="Thread starter"></i> <span class="u-srOnly">Thread starter</span> <a href="/members/henry98.688381/" class="username u-concealed" dir="auto" data-user-id="688381" data-xf-init="member-tooltip">Henry98</a> </li> <li> <i class="fa--xf fal fa-clock" aria-hidden="true" title="Start date"></i> <span class="u-srOnly">Start date</span> <a href="/threads/identify-dc-gain-and-dc-operations-point-of-floating-inverter-amplifier.412493/" class="u-concealed"><time class="u-dt" dir="auto" datetime="2024-09-25T01:19:12+0100" data-time="1727223552" data-date-string="Sep 25, 2024" data-time-string="1:19 AM" title="Sep 25, 2024 at 1:19 AM">Sep 25, 2024</time></a> </li> </ul> </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 id='div-gpt-eda_wallpaper'> <script> googletag.cmd.push(function() { googletag.display('div-gpt-eda_wallpaper'); }); </script> </div> <div class="p-body-pageContent"> <div class="block block--messages " data-xf-init="lightbox select-to-quote" data-message-selector=".js-post" data-lb-id="thread-412493"> <div class="block-outer"></div> <div class="block-outer js-threadStatusField"></div> <div class="block-container"> <div class="block-body"> <article class="message message--post js-post js-inlineModContainer " data-author="Henry98" data-content="post-1781110" id="js-post-1781110" > <span class="u-anchorTarget" id="post-1781110"></span> <div class="message-header"> <header class="message-attribution message-attribution--split"> <ul class="message-attribution-main listInline "> <li class="u-concealed"> <a href="/threads/identify-dc-gain-and-dc-operations-point-of-floating-inverter-amplifier.412493/post-1781110" rel="nofollow" > <time class="u-dt" dir="auto" datetime="2024-09-25T01:19:12+0100" data-time="1727223552" data-date-string="Sep 25, 2024" data-time-string="1:19 AM" title="Sep 25, 2024 at 1:19 AM">Sep 25, 2024</time> </a> </li> </ul> <ul class="message-attribution-opposite message-attribution-opposite--list "> <li> <a href="/threads/identify-dc-gain-and-dc-operations-point-of-floating-inverter-amplifier.412493/post-1781110" class="message-attribution-gadget" data-xf-init="share-tooltip" data-href="/posts/1781110/share" aria-label="Share" rel="nofollow"> <i class="fa--xf fal fa-share-alt" aria-hidden="true"></i> </a> </li> <li> <a href="/threads/identify-dc-gain-and-dc-operations-point-of-floating-inverter-amplifier.412493/post-1781110" rel="nofollow"> #1 </a> </li> </ul> </header> </div> <div class="message-inner"> <div class="message-cell message-cell--user"> <section class="message-user" > <div class="message-avatar "> <div class="message-avatar-wrapper"> <a href="/members/henry98.688381/" class="avatar avatar--m avatar--default avatar--default--dynamic" data-user-id="688381" data-xf-init="member-tooltip" style="background-color: #1f7a1f; color: #70db70"> <span class="avatar-u688381-m" role="img" aria-label="Henry98">H</span> </a> </div> </div> <div class="message-userDetails"> <h4 class="message-name"><a href="/members/henry98.688381/" class="username " dir="auto" data-user-id="688381" data-xf-init="member-tooltip">Henry98</a></h4> <h5 class="userTitle message-userTitle" dir="auto">Newbie level 6</h5> </div> <img src="/styles/images/ranks/blevel3.gif" alt="Newbie level 6"> <div class="message-userExtras"> <dl class="pairs pairs--justified joinedBlock"> <dt>Joined</dt> <dd>Jun 29, 2024</dd> </dl> <dl class="pairs pairs--justified pairs--xbBoxed"> <dt>Messages</dt> <dd>12</dd> </dl> <dl class="pairs pairs--justified"> <dt> Helped</dt> <dd>0</dd> </dl> <dl class="pairs pairs--justified"> <dt>Reputation </dt> <dd> <a href="/reputation/authors/henry98.688381" class="fauxBlockLink-linkRow u-concealed">0</a> </dd> </dl> <dl class="pairs pairs--justified"> <dt>Reaction score</dt> <dd>0</dd> </dl> <dl class="pairs pairs--justified pairs--xbBoxed trophyBlock"> <dt>Trophy points</dt> <dd>1</dd> </dl> <dl class="pairs pairs--justified creditBlock"> <dt title="Activity points">Activity points</dt> <dd> <a href="/activity/" data-xf-click="overlay" class="fauxBlockLink-blockLink u-concealed"> 172 </a> </dd> </dl> </div> <span class="message-userArrow"></span> </section> </div> <div class="message-cell message-cell--main"> <div class="message-main js-quickEditTarget"> <div class="message-content js-messageContent"> <div class="message-userContent lbContainer js-lbContainer " data-lb-id="post-1781110" data-lb-caption-desc="Henry98 · Sep 25, 2024 at 1:19 AM"> <article class="message-body js-selectToQuote"> <div > <div class="bbWrapper">Hello, everyone,<br /> I want to identify DC gain and operations point a floating inverter amplifier as picture below, but I try run dc, ac, in ADE but I confuse about the result.<br /> Anyone Could you help me the guideline to identify DC gain and operations point.<br /> Thank, everyone<br /> <script class="js-extraPhrases" type="application/json"> { "lightbox_close": "Close", "lightbox_next": "Next", "lightbox_previous": "Previous", "lightbox_error": "The requested content cannot be loaded. 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data-user-id="688381" data-username="@Henry98">@Henry98</a> <br /> Your dc/ac simulation wouldn't give you a valid result since your circuit is a switching circuit, hence identifying the dc/ac currents is impossible for a simulator.<br /> I can recommend using PAC/PSS analysis (that we use for SC-circuits analysis for example) to get the desired result.<br /> You may find the following tutorials useful (attached).<br /> Hopefully, it helps.</div> </div> <div class="js-selectToQuoteEnd"> </div> </article> <section class="message-attachments"> <h4 class="block-textHeader">Attachments</h4> <ul class="attachmentList"> <li class="file file--linked"> <a class="u-anchorTarget" id="attachment-194138"></a> <a class="file-preview" href="/attachments/atutorialonadvancedanalysisforcadencespectre-pdf.194138/" target="_blank"> <span class="file-typeIcon"> <i class="fa--xf fal fa-file-pdf" aria-hidden="true"></i> </span> </a> <div class="file-content"> <div class="file-info"> <span class="file-name" 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data-username="@sidun.av">@sidun.av</a> <br /> Your answer is really helpful to me<br /> <br /> I tried to simulate my circuit with PSS, PAC and then I have a result as below, Could you help me explain for me the meaning of that result?<br /> <br /> This is my result at input harmonic -2:<br /> <div class="bbImageWrapper js-lbImage" title="1727311162200.png" data-src="https://www.edaboard.com/attachments/1727311162200-png.194160/" data-lb-sidebar-href="" data-lb-caption-extra-html="" data-single-image="1"> <img src="https://www.edaboard.com/attachments/1727311162200-png.194160/" data-url="" class="bbImage" data-zoom-target="1" style="width: 164px" alt="1727311162200.png" title="1727311162200.png" width="321" height="676" loading="lazy" /> </div><div class="bbImageWrapper js-lbImage" title="1727311018643.png" data-src="https://www.edaboard.com/attachments/1727311018643-png.194159/" data-lb-sidebar-href="" data-lb-caption-extra-html="" data-single-image="1"> <img src="https://www.edaboard.com/attachments/1727311018643-png.194159/" data-url="" class="bbImage" data-zoom-target="1" style="width: 820px" alt="1727311018643.png" title="1727311018643.png" width="1907" height="802" loading="lazy" /> </div><br /> <br /> with the input signal is 1.7k and switching frequency is 2MHz<br /> and with setup of PSS , PAC as picture below:<br /> <div class="bbImageWrapper js-lbImage" title="1727311267921.png" data-src="https://www.edaboard.com/attachments/1727311267921-png.194161/" data-lb-sidebar-href="" data-lb-caption-extra-html="" data-single-image="1"> <img src="https://www.edaboard.com/attachments/1727311267921-png.194161/" data-url="" class="bbImage" data-zoom-target="1" style="width: 233px" alt="1727311267921.png" title="1727311267921.png" width="424" height="1040" loading="lazy" /> </div><div class="bbImageWrapper js-lbImage" title="1727311299593.png" data-src="https://www.edaboard.com/attachments/1727311299593-png.194162/" data-lb-sidebar-href="" data-lb-caption-extra-html="" data-single-image="1"> <img src="https://www.edaboard.com/attachments/1727311299593-png.194162/" data-url="" class="bbImage" data-zoom-target="1" style="width: 316px" alt="1727311299593.png" title="1727311299593.png" width="424" height="763" loading="lazy" /> </div><br /> <br /> Thank you</div> </div> <div class="js-selectToQuoteEnd"> </div> </article> </div> </div> <footer class="message-footer"> <div class="message-microdata" itemprop="interactionStatistic" itemtype="https://schema.org/InteractionCounter" itemscope> <meta itemprop="userInteractionCount" content="0" /> <meta itemprop="interactionType" content="https://schema.org/LikeAction" /> </div> <div class="message-actionBar actionBar"> <div class="actionBar-set actionBar-set--external"> <a href="/threads/identify-dc-gain-and-dc-operations-point-of-floating-inverter-amplifier.412493/reply?quote=1781175" class="actionBar-action actionBar-action--reply" title="Reply, quoting this message" 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data-content="post-1781188" id="js-post-1781188" itemscope itemtype="https://schema.org/Answer" itemid="https://www.edaboard.com/posts/1781188/"> <meta itemprop="parentItem" itemscope itemid="https://www.edaboard.com/threads/identify-dc-gain-and-dc-operations-point-of-floating-inverter-amplifier.412493/" /> <span class="u-anchorTarget" id="post-1781188"></span> <div class="message-header"> <header class="message-attribution message-attribution--split"> <ul class="message-attribution-main listInline "> <li class="u-concealed"> <a href="/threads/identify-dc-gain-and-dc-operations-point-of-floating-inverter-amplifier.412493/post-1781188" rel="nofollow" itemprop="url"> <time class="u-dt" dir="auto" datetime="2024-09-26T08:48:41+0100" data-time="1727336921" data-date-string="Sep 26, 2024" data-time-string="8:48 AM" title="Sep 26, 2024 at 8:48 AM" itemprop="datePublished">Sep 26, 2024</time> </a> </li> </ul> <ul class="message-attribution-opposite message-attribution-opposite--list "> <li> <a href="/threads/identify-dc-gain-and-dc-operations-point-of-floating-inverter-amplifier.412493/post-1781188" class="message-attribution-gadget" data-xf-init="share-tooltip" data-href="/posts/1781188/share" aria-label="Share" rel="nofollow"> <i class="fa--xf fal fa-share-alt" aria-hidden="true"></i> </a> </li> <li> <a href="/threads/identify-dc-gain-and-dc-operations-point-of-floating-inverter-amplifier.412493/post-1781188" rel="nofollow"> #4 </a> </li> </ul> </header> </div> <div class="message-inner"> <div class="message-cell message-cell--user"> <section class="message-user" itemprop="author" itemscope itemtype="https://schema.org/Person" itemid="https://www.edaboard.com/members/sidun-av.689410/"> <meta itemprop="url" content="https://www.edaboard.com/members/sidun-av.689410/" /> <div class="message-avatar "> <div class="message-avatar-wrapper"> <a href="/members/sidun-av.689410/" class="avatar avatar--m" data-user-id="689410" data-xf-init="member-tooltip"> <img 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data-user-id="688381" data-username="@Henry98">@Henry98</a> , you are getting a quite weird result...<br /> 1. Did you make sure that you have only 1 clock source in the circuit (and it has the highest frequency) and the rest are just derivatives of it?<br /> 2. Did you try to run transient analysis to make sure that you are getting an output signal which is close to what you are expecting? Apart from simulation settings, I am suspecting some errors in your schematic, so maybe that's why you are getting -6kdB (!) as a result. <br /> 3. It would be useful to see your schematic by the way...</div> </div> <div class="js-selectToQuoteEnd"> </div> </article> </div> </div> <footer class="message-footer"> <div class="message-microdata" itemprop="interactionStatistic" itemtype="https://schema.org/InteractionCounter" itemscope> <meta itemprop="userInteractionCount" content="0" /> <meta itemprop="interactionType" content="https://schema.org/LikeAction" /> </div> <div class="message-actionBar actionBar"> <div class="actionBar-set actionBar-set--external"> <a href="/threads/identify-dc-gain-and-dc-operations-point-of-floating-inverter-amplifier.412493/reply?quote=1781188" class="actionBar-action actionBar-action--reply" title="Reply, quoting this message" rel="nofollow" data-xf-click="quote" data-quote-href="/posts/1781188/quote">Reply</a> </div> </div> <div class="reactionsBar js-reactionsList "> </div> <br/> <div class="js-historyTarget message-historyTarget toggleTarget" data-href="trigger-href"></div> </footer> </div> </div> <div class="message-cell message-cell--vote"> <div class="message-column"> <div class="contentVote js-contentVote " data-xf-init="content-vote" data-content-id="post-1781188"> <meta itemprop="upvoteCount" content="0" /> <a href="javascript:" class="contentVote-vote is-disabled contentVote-vote--up " data-vote="up"><span class="u-srOnly">Upvote</span></a> <span class="contentVote-score js-voteCount" data-score="0">0</span> <a href="javascript:" class="contentVote-vote is-disabled contentVote-vote--down " data-vote="down"><span class="u-srOnly">Downvote</span></a> </div> </div> </div> </div> </article> <article class="message message--post js-post js-inlineModContainer " data-author="Henry98" data-content="post-1781204" id="js-post-1781204" itemscope itemtype="https://schema.org/Answer" itemid="https://www.edaboard.com/posts/1781204/"> <meta itemprop="parentItem" itemscope itemid="https://www.edaboard.com/threads/identify-dc-gain-and-dc-operations-point-of-floating-inverter-amplifier.412493/" /> <span class="u-anchorTarget" id="post-1781204"></span> <div class="message-header"> <header class="message-attribution message-attribution--split"> <ul class="message-attribution-main listInline "> <li class="u-concealed"> <a href="/threads/identify-dc-gain-and-dc-operations-point-of-floating-inverter-amplifier.412493/post-1781204" rel="nofollow" itemprop="url"> <time class="u-dt" dir="auto" datetime="2024-09-26T13:40:16+0100" data-time="1727354416" data-date-string="Sep 26, 2024" data-time-string="1:40 PM" title="Sep 26, 2024 at 1:40 PM" itemprop="datePublished">Sep 26, 2024</time> </a> </li> </ul> <ul class="message-attribution-opposite message-attribution-opposite--list "> <li> <a href="/threads/identify-dc-gain-and-dc-operations-point-of-floating-inverter-amplifier.412493/post-1781204" class="message-attribution-gadget" data-xf-init="share-tooltip" data-href="/posts/1781204/share" aria-label="Share" rel="nofollow"> <i class="fa--xf fal fa-share-alt" aria-hidden="true"></i> </a> </li> <li> <a href="/threads/identify-dc-gain-and-dc-operations-point-of-floating-inverter-amplifier.412493/post-1781204" rel="nofollow"> #5 </a> </li> </ul> </header> </div> <div class="message-inner"> <div class="message-cell message-cell--user"> <section class="message-user" itemprop="author" itemscope itemtype="https://schema.org/Person" itemid="https://www.edaboard.com/members/henry98.688381/"> <meta itemprop="url" content="https://www.edaboard.com/members/henry98.688381/" /> <div class="message-avatar "> <div class="message-avatar-wrapper"> <a href="/members/henry98.688381/" class="avatar avatar--m avatar--default avatar--default--dynamic" data-user-id="688381" data-xf-init="member-tooltip" style="background-color: #1f7a1f; color: #70db70"> <span class="avatar-u688381-m" role="img" aria-label="Henry98">H</span> </a> </div> </div> <div class="message-userDetails"> <h4 class="message-name"><a href="/members/henry98.688381/" class="username " dir="auto" data-user-id="688381" data-xf-init="member-tooltip"><span itemprop="name">Henry98</span></a></h4> <h5 class="userTitle message-userTitle" dir="auto" itemprop="jobTitle">Newbie level 6</h5> </div> <img src="/styles/images/ranks/blevel3.gif" alt="Newbie level 6"> <div class="message-userExtras"> <dl class="pairs pairs--justified joinedBlock"> <dt>Joined</dt> <dd>Jun 29, 2024</dd> </dl> <dl class="pairs pairs--justified pairs--xbBoxed"> <dt>Messages</dt> <dd>12</dd> </dl> <dl class="pairs pairs--justified"> <dt> Helped</dt> <dd>0</dd> </dl> <dl class="pairs pairs--justified"> <dt>Reputation </dt> <dd> <a href="/reputation/authors/henry98.688381" class="fauxBlockLink-linkRow u-concealed">0</a> </dd> </dl> <dl class="pairs pairs--justified"> <dt>Reaction score</dt> <dd>0</dd> </dl> <dl class="pairs pairs--justified pairs--xbBoxed trophyBlock"> <dt>Trophy points</dt> <dd>1</dd> </dl> <dl class="pairs pairs--justified creditBlock"> <dt title="Activity points">Activity points</dt> <dd> <a href="/activity/" data-xf-click="overlay" class="fauxBlockLink-blockLink u-concealed"> 172 </a> </dd> </dl> </div> <span class="message-userArrow"></span> </section> </div> <div class="message-cell message-cell--main"> <div class="message-main js-quickEditTarget"> <div class="message-content js-messageContent"> <div class="message-userContent lbContainer js-lbContainer " data-lb-id="post-1781204" data-lb-caption-desc="Henry98 · Sep 26, 2024 at 1:40 PM"> <article class="message-body js-selectToQuote"> <div itemprop="text"> <div class="bbWrapper">Hi <a href="https://www.edaboard.com/members/689410/" class="username" data-xf-init="member-tooltip" data-user-id="689410" data-username="@sidun.av">@sidun.av</a> ,<br /> 1. My schematic is using a input voltage source is 2kHz, and two inverted source of clock 2MHz to control the switching of circuit.<br /> 2. when I run transient simulation, output is kind of like á my expected.<br /> 3. My schematic using in this simulation as picture below:<br /> <div class="bbImageWrapper js-lbImage" title="1727354055768.png" data-src="https://www.edaboard.com/attachments/1727354055768-png.194170/" data-lb-sidebar-href="" data-lb-caption-extra-html="" data-single-image="1"> <img src="https://www.edaboard.com/attachments/1727354055768-png.194170/" data-url="" class="bbImage" data-zoom-target="1" style="width: 481px" alt="1727354055768.png" title="1727354055768.png" width="1224" height="549" loading="lazy" /> </div><br /> <br /> transient output of this circuit is:<br /> <div class="bbImageWrapper js-lbImage" title="1727354118799.png" data-src="https://www.edaboard.com/attachments/1727354118799-png.194171/" data-lb-sidebar-href="" data-lb-caption-extra-html="" data-single-image="1"> <img src="https://www.edaboard.com/attachments/1727354118799-png.194171/" data-url="" class="bbImage" data-zoom-target="1" style="width: 481px" alt="1727354118799.png" title="1727354118799.png" width="1417" height="791" loading="lazy" /> </div><br /> <br /> And the voltage gain of this structure:<br /> <div class="bbImageWrapper js-lbImage" title="1727354182783.png" data-src="https://www.edaboard.com/attachments/1727354182783-png.194172/" data-lb-sidebar-href="" data-lb-caption-extra-html="" data-single-image="1"> <img src="https://www.edaboard.com/attachments/1727354182783-png.194172/" data-url="" class="bbImage" data-zoom-target="1" style="width: 482px" alt="1727354182783.png" title="1727354182783.png" width="1278" height="791" loading="lazy" /> </div><div class="bbImageWrapper js-lbImage" title="1727354206850.png" data-src="https://www.edaboard.com/attachments/1727354206850-png.194173/" data-lb-sidebar-href="" data-lb-caption-extra-html="" data-single-image="1"> <img src="https://www.edaboard.com/attachments/1727354206850-png.194173/" data-url="" class="bbImage" data-zoom-target="1" style="width: 141px" alt="1727354206850.png" title="1727354206850.png" width="317" height="677" loading="lazy" /> </div><br /> <br /> below í my setup for PSS and PAC:<br /> <div class="bbImageWrapper js-lbImage" title="1727354268800.png" data-src="https://www.edaboard.com/attachments/1727354268800-png.194174/" data-lb-sidebar-href="" data-lb-caption-extra-html="" data-single-image="1"> <img src="https://www.edaboard.com/attachments/1727354268800-png.194174/" data-url="" class="bbImage" data-zoom-target="1" style="width: 231px" alt="1727354268800.png" title="1727354268800.png" width="420" height="942" loading="lazy" /> </div><div class="bbImageWrapper js-lbImage" title="1727354295023.png" data-src="https://www.edaboard.com/attachments/1727354295023-png.194175/" data-lb-sidebar-href="" data-lb-caption-extra-html="" data-single-image="1"> <img src="https://www.edaboard.com/attachments/1727354295023-png.194175/" data-url="" class="bbImage" data-zoom-target="1" style="width: 224px" alt="1727354295023.png" title="1727354295023.png" width="411" height="945" loading="lazy" /> </div><br /> <br /> Could you help me check it whether my schematic or setup of PSS , PAC is wrong?<br /> <br /> Thank you.</div> </div> <div class="js-selectToQuoteEnd"> </div> </article> </div> </div> <footer class="message-footer"> <div class="message-microdata" itemprop="interactionStatistic" itemtype="https://schema.org/InteractionCounter" itemscope> <meta itemprop="userInteractionCount" content="0" /> <meta itemprop="interactionType" content="https://schema.org/LikeAction" /> </div> <div class="message-actionBar actionBar"> <div class="actionBar-set actionBar-set--external"> <a href="/threads/identify-dc-gain-and-dc-operations-point-of-floating-inverter-amplifier.412493/reply?quote=1781204" class="actionBar-action actionBar-action--reply" title="Reply, quoting this message" rel="nofollow" data-xf-click="quote" data-quote-href="/posts/1781204/quote">Reply</a> </div> </div> <div class="reactionsBar js-reactionsList "> </div> <br/> <div class="js-historyTarget 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itemprop="image" /> </a> </div> </div> <div class="message-userDetails"> <h4 class="message-name"><a href="/members/sidun-av.689410/" class="username " dir="auto" data-user-id="689410" data-xf-init="member-tooltip"><span itemprop="name">sidun.av</span></a></h4> <h5 class="userTitle message-userTitle" dir="auto" itemprop="jobTitle">Member level 3</h5> </div> <img src="/styles/images/ranks/dlevel3.gif" alt="Member level 3"> <div class="message-userExtras"> <dl class="pairs pairs--justified joinedBlock"> <dt>Joined</dt> <dd>Aug 16, 2024</dd> </dl> <dl class="pairs pairs--justified pairs--xbBoxed"> <dt>Messages</dt> <dd>67</dd> </dl> <dl class="pairs pairs--justified"> <dt> Helped</dt> <dd>6</dd> </dl> <dl class="pairs pairs--justified"> <dt>Reputation </dt> <dd> <a href="/reputation/authors/sidun-av.689410" class="fauxBlockLink-linkRow u-concealed">12</a> </dd> </dl> <dl class="pairs pairs--justified"> <dt>Reaction score</dt> <dd>16</dd> </dl> <dl class="pairs pairs--justified pairs--xbBoxed trophyBlock"> <dt>Trophy points</dt> <dd>8</dd> </dl> <dl class="pairs pairs--justified creditBlock"> <dt title="Activity points">Activity points</dt> <dd> <a href="/activity/" data-xf-click="overlay" class="fauxBlockLink-blockLink u-concealed"> 476 </a> </dd> </dl> </div> <span class="message-userArrow"></span> </section> </div> <div class="message-cell message-cell--main"> <div class="message-main js-quickEditTarget"> <div class="message-content js-messageContent"> <div class="message-userContent lbContainer js-lbContainer " data-lb-id="post-1781213" data-lb-caption-desc="sidun.av · Sep 26, 2024 at 3:51 PM"> <article class="message-body js-selectToQuote"> <div itemprop="text"> <div class="bbWrapper">The one thing I've noticed about your schematic is that you have more than one fundamental frequencies: CLK and CLK_B. I understand that this is just inverted clocks but I am not sure that the simulator can recognize that. Try implementing CLK_B by inverting a CLK through inverter and see if it gives you any meaningful result.<br /> In a meanwhile, I will have look on your analysis setup and tell you if there is something wrong with it.</div> </div> <div class="js-selectToQuoteEnd"> </div> </article> </div> </div> <footer class="message-footer"> <div class="message-microdata" itemprop="interactionStatistic" itemtype="https://schema.org/InteractionCounter" itemscope> <meta itemprop="userInteractionCount" content="0" /> <meta itemprop="interactionType" content="https://schema.org/LikeAction" /> </div> <div class="message-actionBar actionBar"> <div class="actionBar-set actionBar-set--external"> <a href="/threads/identify-dc-gain-and-dc-operations-point-of-floating-inverter-amplifier.412493/reply?quote=1781213" class="actionBar-action actionBar-action--reply" title="Reply, quoting this message" rel="nofollow" data-xf-click="quote" data-quote-href="/posts/1781213/quote">Reply</a> </div> </div> <div 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class="u-srOnly">Upvote</span></a> <span class="contentVote-score js-voteCount" data-score="0">0</span> <a href="javascript:" class="contentVote-vote is-disabled contentVote-vote--down " data-vote="down"><span class="u-srOnly">Downvote</span></a> </div> </div> </div> </div> </article> <article class="message message--post js-post js-inlineModContainer " data-author="Henry98" data-content="post-1781247" id="js-post-1781247" itemscope itemtype="https://schema.org/Answer" itemid="https://www.edaboard.com/posts/1781247/"> <meta itemprop="parentItem" itemscope itemid="https://www.edaboard.com/threads/identify-dc-gain-and-dc-operations-point-of-floating-inverter-amplifier.412493/" /> <span class="u-anchorTarget" id="post-1781247"></span> <div class="message-header"> <header class="message-attribution message-attribution--split"> <ul class="message-attribution-main listInline "> <li class="u-concealed"> <a 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message-cell--user"> <section class="message-user" itemprop="author" itemscope itemtype="https://schema.org/Person" itemid="https://www.edaboard.com/members/henry98.688381/"> <meta itemprop="url" content="https://www.edaboard.com/members/henry98.688381/" /> <div class="message-avatar "> <div class="message-avatar-wrapper"> <a href="/members/henry98.688381/" class="avatar avatar--m avatar--default avatar--default--dynamic" data-user-id="688381" data-xf-init="member-tooltip" style="background-color: #1f7a1f; color: #70db70"> <span class="avatar-u688381-m" role="img" aria-label="Henry98">H</span> </a> </div> </div> <div class="message-userDetails"> <h4 class="message-name"><a href="/members/henry98.688381/" class="username " dir="auto" data-user-id="688381" data-xf-init="member-tooltip"><span itemprop="name">Henry98</span></a></h4> <h5 class="userTitle message-userTitle" dir="auto" itemprop="jobTitle">Newbie level 6</h5> </div> <img src="/styles/images/ranks/blevel3.gif" alt="Newbie level 6"> <div class="message-userExtras"> <dl class="pairs pairs--justified joinedBlock"> <dt>Joined</dt> <dd>Jun 29, 2024</dd> </dl> <dl class="pairs pairs--justified pairs--xbBoxed"> <dt>Messages</dt> <dd>12</dd> </dl> <dl class="pairs pairs--justified"> <dt> Helped</dt> <dd>0</dd> </dl> <dl class="pairs pairs--justified"> <dt>Reputation </dt> <dd> <a href="/reputation/authors/henry98.688381" class="fauxBlockLink-linkRow u-concealed">0</a> </dd> </dl> <dl class="pairs pairs--justified"> <dt>Reaction score</dt> <dd>0</dd> </dl> <dl class="pairs pairs--justified pairs--xbBoxed trophyBlock"> <dt>Trophy points</dt> <dd>1</dd> </dl> <dl class="pairs pairs--justified creditBlock"> <dt title="Activity points">Activity points</dt> <dd> <a href="/activity/" data-xf-click="overlay" class="fauxBlockLink-blockLink u-concealed"> 172 </a> </dd> </dl> </div> <span class="message-userArrow"></span> </section> </div> <div class="message-cell message-cell--main"> <div class="message-main js-quickEditTarget"> <div class="message-content js-messageContent"> <div class="message-userContent lbContainer js-lbContainer " data-lb-id="post-1781247" data-lb-caption-desc="Henry98 · Sep 27, 2024 at 2:40 AM"> <article class="message-body js-selectToQuote"> <div itemprop="text"> <div class="bbWrapper">Hi <a href="https://www.edaboard.com/members/689410/" class="username" data-xf-init="member-tooltip" data-user-id="689410" data-username="@sidun.av">@sidun.av</a>,<br /> <br /> I'm checking my circuit then I realized that Pmos, Nmos of my circuit went to region 0.<br /> Therefore, I suspected that DC analysis can not identify the region of Tr of switching circuit because that circuit working in difference state for each of level (High/low) of clock.<br /> Could you share me how to check operation point of TR in switching circuit?<br /> <br /> Thank you.</div> </div> <div class="js-selectToQuoteEnd"> </div> </article> </div> </div> <footer class="message-footer"> <div 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</dl> </div> <span class="message-userArrow"></span> </section> </div> <div class="message-cell message-cell--main"> <div class="message-main js-quickEditTarget"> <div class="message-content js-messageContent"> <div class="message-userContent lbContainer js-lbContainer " data-lb-id="post-1781269" data-lb-caption-desc="sidun.av · Sep 27, 2024 at 8:58 AM"> <article class="message-body js-selectToQuote"> <div itemprop="text"> <div class="bbWrapper"><blockquote data-attributes="member: 688381" data-quote="Henry98" data-source="post: 1781247" class="bbCodeBlock bbCodeBlock--expandable bbCodeBlock--quote js-expandWatch"> <div class="bbCodeBlock-title"> <a href="/goto/post?id=1781247" class="bbCodeBlock-sourceJump" rel="nofollow" data-xf-click="attribution" data-content-selector="#post-1781247">Henry98 said:</a> </div> <div class="bbCodeBlock-content"> <div class="bbCodeBlock-expandContent js-expandContent "> I'm checking my circuit then I realized that Pmos, Nmos of my circuit went to region 0. </div> <div class="bbCodeBlock-expandLink js-expandLink"><a role="button" tabindex="0">Click to expand...</a></div> </div> </blockquote>That makes complete sense, because in DC analysis (depending on the initial conditions of your circuit) some switches will be open leading to open circuit and no current flow.<br /> My suggestion will be the following:<br /> 1. Perform a transient analysis;<br /> 2. Go to View->Annotations and select Transient Operating Points;<br /> 3. Specify the time when your circuit is at the phase 1 and inspect the operating points. Repeat the same for the time when your circuit is in phase 2.</div> </div> <div class="js-selectToQuoteEnd"> </div> </article> </div> </div> <footer class="message-footer"> <div class="message-microdata" itemprop="interactionStatistic" itemtype="https://schema.org/InteractionCounter" itemscope> <meta itemprop="userInteractionCount" content="0" /> <meta itemprop="interactionType" content="https://schema.org/LikeAction" /> </div> <div class="message-actionBar actionBar"> <div class="actionBar-set actionBar-set--external"> <a href="/threads/identify-dc-gain-and-dc-operations-point-of-floating-inverter-amplifier.412493/reply?quote=1781269" class="actionBar-action actionBar-action--reply" title="Reply, quoting this message" rel="nofollow" data-xf-click="quote" data-quote-href="/posts/1781269/quote">Reply</a> </div> </div> <div class="reactionsBar js-reactionsList "> </div> <br/> <div class="js-historyTarget message-historyTarget toggleTarget" data-href="trigger-href"></div> </footer> </div> 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data-href="/posts/1781278/share" aria-label="Share" rel="nofollow"> <i class="fa--xf fal fa-share-alt" aria-hidden="true"></i> </a> </li> <li> <a href="/threads/identify-dc-gain-and-dc-operations-point-of-floating-inverter-amplifier.412493/post-1781278" rel="nofollow"> #9 </a> </li> </ul> </header> </div> <div class="message-inner"> <div class="message-cell message-cell--user"> <section class="message-user" itemprop="author" itemscope itemtype="https://schema.org/Person" itemid="https://www.edaboard.com/members/henry98.688381/"> <meta itemprop="url" content="https://www.edaboard.com/members/henry98.688381/" /> <div class="message-avatar "> <div class="message-avatar-wrapper"> <a href="/members/henry98.688381/" class="avatar avatar--m avatar--default avatar--default--dynamic" data-user-id="688381" data-xf-init="member-tooltip" style="background-color: #1f7a1f; color: #70db70"> <span class="avatar-u688381-m" role="img" aria-label="Henry98">H</span> </a> </div> </div> <div class="message-userDetails"> <h4 class="message-name"><a href="/members/henry98.688381/" class="username " dir="auto" data-user-id="688381" data-xf-init="member-tooltip"><span itemprop="name">Henry98</span></a></h4> <h5 class="userTitle message-userTitle" dir="auto" itemprop="jobTitle">Newbie level 6</h5> </div> <img src="/styles/images/ranks/blevel3.gif" alt="Newbie level 6"> <div class="message-userExtras"> <dl class="pairs pairs--justified joinedBlock"> <dt>Joined</dt> <dd>Jun 29, 2024</dd> </dl> <dl class="pairs pairs--justified pairs--xbBoxed"> <dt>Messages</dt> <dd>12</dd> </dl> <dl class="pairs pairs--justified"> <dt> Helped</dt> <dd>0</dd> </dl> <dl class="pairs pairs--justified"> <dt>Reputation </dt> <dd> <a href="/reputation/authors/henry98.688381" class="fauxBlockLink-linkRow u-concealed">0</a> </dd> </dl> <dl class="pairs pairs--justified"> <dt>Reaction score</dt> <dd>0</dd> </dl> <dl class="pairs pairs--justified pairs--xbBoxed trophyBlock"> <dt>Trophy points</dt> <dd>1</dd> </dl> <dl class="pairs pairs--justified creditBlock"> <dt title="Activity points">Activity points</dt> <dd> <a href="/activity/" data-xf-click="overlay" class="fauxBlockLink-blockLink u-concealed"> 172 </a> </dd> </dl> </div> <span class="message-userArrow"></span> </section> </div> <div class="message-cell message-cell--main"> <div class="message-main js-quickEditTarget"> <div class="message-content js-messageContent"> <div class="message-userContent lbContainer js-lbContainer " data-lb-id="post-1781278" data-lb-caption-desc="Henry98 · Sep 27, 2024 at 9:43 AM"> <article class="message-body js-selectToQuote"> <div itemprop="text"> <div class="bbWrapper">Hi <a href="https://www.edaboard.com/members/689410/" class="username" data-xf-init="member-tooltip" data-user-id="689410" data-username="@sidun.av">@sidun.av</a>,<br /> <br /> Thank you for your suggestion<br /> In the meantime I set up cadence to do simulation again, I have some questions:<br /> <br /> 1: I read your guideline document, I wonder that why input voltage for circuit need to be DC voltage not AC voltage to run PSS.<br /> <div class="bbImageWrapper js-lbImage" title="1727425978530.png" data-src="https://www.edaboard.com/attachments/1727425978530-png.194201/" data-lb-sidebar-href="" data-lb-caption-extra-html="" data-single-image="1"> <img src="https://www.edaboard.com/attachments/1727425978530-png.194201/" data-url="" class="bbImage" data-zoom-target="1" style="width: 718px" alt="1727425978530.png" title="1727425978530.png" width="1362" height="143" loading="lazy" /> </div><br /> <br /> I also reference to this video and realized that they also change from input AC to input DC to run PSS and PAC<br /> <div class="bbImageWrapper js-lbImage" title="1727426156432.png" data-src="https://www.edaboard.com/attachments/1727426156432-png.194202/" data-lb-sidebar-href="" data-lb-caption-extra-html="" data-single-image="1"> <img src="https://www.edaboard.com/attachments/1727426156432-png.194202/" data-url="" class="bbImage" data-zoom-target="1" style="width: 726px" alt="1727426156432.png" title="1727426156432.png" width="1284" height="677" loading="lazy" /> </div><br /> <div class="bbMediaWrapper" data-media-site-id="youtube" data-media-key="I9zkt1OTWB0"> <div class="bbMediaWrapper-inner"> <iframe src="https://www.youtube.com/embed/I9zkt1OTWB0?wmode=opaque" width="560" height="315" frameborder="0" allowfullscreen="true"></iframe> </div> </div><br /> my circuit is using AC input to run PSS, I think maybe it also is one of problems that I need to fix.<br /> Thank you.</div> </div> <div class="js-selectToQuoteEnd"> </div> </article> </div> </div> <footer class="message-footer"> <div class="message-microdata" itemprop="interactionStatistic" itemtype="https://schema.org/InteractionCounter" itemscope> <meta itemprop="userInteractionCount" content="0" /> <meta itemprop="interactionType" content="https://schema.org/LikeAction" /> </div> <div class="message-actionBar actionBar"> <div 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data-lb-caption-desc="sidun.av · Sep 27, 2024 at 12:41 PM"> <article class="message-body js-selectToQuote"> <div itemprop="text"> <div class="bbWrapper">Hi <a href="https://www.edaboard.com/members/688381/" class="username" data-xf-init="member-tooltip" data-user-id="688381" data-username="@Henry98">@Henry98</a> <br /> I've sent you a file directly, please check.</div> </div> <div class="js-selectToQuoteEnd"> </div> </article> </div> </div> <footer class="message-footer"> <div class="message-microdata" itemprop="interactionStatistic" itemtype="https://schema.org/InteractionCounter" itemscope> <meta itemprop="userInteractionCount" content="0" /> <meta itemprop="interactionType" content="https://schema.org/LikeAction" /> </div> <div class="message-actionBar actionBar"> <div class="actionBar-set actionBar-set--external"> <a href="/threads/identify-dc-gain-and-dc-operations-point-of-floating-inverter-amplifier.412493/reply?quote=1781289" class="actionBar-action actionBar-action--reply" 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Points: 2 </div> <div class="mrs_contentRow-title"> Helpful Answer Positive Rating </div> <div class="contentRow-minor"> <ul class="listInline listInline--bullet"> <li> <time class="u-dt" dir="auto" datetime="2024-09-27T14:51:03+0100" data-time="1727445063" data-date-string="Sep 27, 2024" data-time-string="2:51 PM" title="Sep 27, 2024 at 2:51 PM">Sep 27, 2024</time> </li> <li> </li> </ul> </div> </div> </div> </ol> </div> </div> </div> </footer> </div> </div> <div class="message-cell message-cell--vote"> <div class="message-column"> <div class="contentVote js-contentVote " data-xf-init="content-vote" data-content-id="post-1781289"> <meta itemprop="upvoteCount" content="0" /> <a href="javascript:" class="contentVote-vote is-disabled contentVote-vote--up " data-vote="up"><span class="u-srOnly">Upvote</span></a> <span class="contentVote-score js-voteCount" data-score="0">0</span> <a href="javascript:" class="contentVote-vote is-disabled contentVote-vote--down " data-vote="down"><span 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23, 2024 at 2:02 PM" itemprop="datePublished">Saturday at 2:02 PM</time> </a> </li> </ul> <ul class="message-attribution-opposite message-attribution-opposite--list "> <li> <a href="/threads/identify-dc-gain-and-dc-operations-point-of-floating-inverter-amplifier.412493/post-1784460" class="message-attribution-gadget" data-xf-init="share-tooltip" data-href="/posts/1784460/share" aria-label="Share" rel="nofollow"> <i class="fa--xf fal fa-share-alt" aria-hidden="true"></i> </a> </li> <li> <a href="/threads/identify-dc-gain-and-dc-operations-point-of-floating-inverter-amplifier.412493/post-1784460" rel="nofollow"> #11 </a> </li> </ul> </header> </div> <div class="message-inner"> <div class="message-cell message-cell--user"> <section class="message-user" itemprop="author" itemscope itemtype="https://schema.org/Person" itemid="https://www.edaboard.com/members/zhihu.691617/"> <meta itemprop="url" content="https://www.edaboard.com/members/zhihu.691617/" /> <div class="message-avatar "> <div 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data-attributes="member: 689410" data-quote="sidun.av" data-source="post: 1781289" class="bbCodeBlock bbCodeBlock--expandable bbCodeBlock--quote js-expandWatch"> <div class="bbCodeBlock-title"> <a href="/goto/post?id=1781289" class="bbCodeBlock-sourceJump" rel="nofollow" data-xf-click="attribution" data-content-selector="#post-1781289">sidun.av said:</a> </div> <div class="bbCodeBlock-content"> <div class="bbCodeBlock-expandContent js-expandContent "> Hi <a href="https://www.edaboard.com/members/688381/" class="username" data-xf-init="member-tooltip" data-user-id="688381" data-username="@Henry98">@Henry98</a><br /> I've sent you a file directly, please check. </div> <div class="bbCodeBlock-expandLink js-expandLink"><a role="button" tabindex="0">Click to expand...</a></div> </div> </blockquote>Sorry, could you share something about the file? I have been confused in the same situation. Thank you very much.</div> </div> <div class="js-selectToQuoteEnd"> </div> </article> </div> </div> <footer class="message-footer"> <div class="message-microdata" itemprop="interactionStatistic" itemtype="https://schema.org/InteractionCounter" itemscope> <meta itemprop="userInteractionCount" content="0" /> <meta itemprop="interactionType" content="https://schema.org/LikeAction" /> </div> <div class="message-actionBar actionBar"> <div class="actionBar-set actionBar-set--external"> <a href="/threads/identify-dc-gain-and-dc-operations-point-of-floating-inverter-amplifier.412493/reply?quote=1784460" class="actionBar-action actionBar-action--reply" title="Reply, quoting this message" rel="nofollow" data-xf-click="quote" data-quote-href="/posts/1784460/quote">Reply</a> </div> </div> <div class="reactionsBar js-reactionsList "> </div> <br/> <div class="js-historyTarget message-historyTarget toggleTarget" data-href="trigger-href"></div> </footer> </div> </div> <div class="message-cell 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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 Forum for Electronics", 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>  <script type="application/ld+json"> { "@context": "https://schema.org", "@type": "QAPage", "url": "https://www.edaboard.com/threads/identify-dc-gain-and-dc-operations-point-of-floating-inverter-amplifier.412493/", "mainEntity": { "@type": "Question", "@id": "https://www.edaboard.com/threads/identify-dc-gain-and-dc-operations-point-of-floating-inverter-amplifier.412493/", "name": "Identify DC gain and DC operations point of Floating inverter amplifier", "datePublished": "2024-09-25T00:19:12+00:00", "url": "https://www.edaboard.com/threads/identify-dc-gain-and-dc-operations-point-of-floating-inverter-amplifier.412493/", "image": "https://www.edaboard.com/attachments/1727223376406-png.194131/", "text": "Hello, everyone,\nI want to identify DC gain and operations point a floating inverter amplifier as picture below, but I try run dc, ac, in ADE but I confuse about the result.\nAnyone Could you help me the guideline to identify DC gain and operations point.\nThank, everyone", "answerCount": 10, "upvoteCount": 0, "author": { "@type": "Person", "@id": "https://www.edaboard.com/members/henry98.688381/", "name": "Henry98", "url": "https://www.edaboard.com/members/henry98.688381/" }, "suggestedAnswer": [ { "@type": "Answer", "datePublished": "2024-11-23T14:02:09+00:00", "url": "https://www.edaboard.com/posts/1784460/", "text": "Hi @Henry98\nI've sent you a file directly, please check.\n\nSorry, could you share something about the file? I have been confused in the same situation. Thank you very much.", "upvoteCount": 0, "author": { "@type": "Person", "@id": "https://www.edaboard.com/members/zhihu.691617/", "name": "Zhihu", "url": "https://www.edaboard.com/members/zhihu.691617/" } }, { "@type": "Answer", "datePublished": "2024-09-27T11:41:01+00:00", "url": "https://www.edaboard.com/posts/1781289/", "text": "Hi @Henry98 \nI've sent you a file directly, please check.", "upvoteCount": 0, "author": { "@type": "Person", "@id": "https://www.edaboard.com/members/sidun-av.689410/", "name": "sidun.av", "url": "https://www.edaboard.com/members/sidun-av.689410/" } }, { "@type": "Answer", "datePublished": "2024-09-27T08:43:30+00:00", "url": "https://www.edaboard.com/posts/1781278/", "text": "Hi @sidun.av,\n\nThank you for your suggestion\nIn the meantime I set up cadence to do simulation again, I have some questions:\n\n1: I read your guideline document, I wonder that why input voltage for circuit need to be DC voltage not AC voltage to run PSS.\n\n\nI also reference to this video and realized that they also change from input AC to input DC to run PSS and PAC\n\n\n\nmy circuit is using AC input to run PSS, I think maybe it also is one of problems that I need to fix.\nThank you.", "upvoteCount": 0, "author": { "@type": "Person", "@id": "https://www.edaboard.com/members/henry98.688381/", "name": "Henry98", "url": "https://www.edaboard.com/members/henry98.688381/" } } ] }, "publisher": { "@type": "Organization", "name": "Forum for Electronics", "description": "International Electronics Discussion Forum: EDA software, circuits, schematics, books, theory, papers, asic, pld, 8051, DSP, Network, RF, Analog Design, PCB, Service Manuals", "url": "https://www.edaboard.com" } } </script> <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>

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Identify DC gain and DC operations point of Floating inverter amplifier | Forum for Electronics