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class="cT"> <h2>新聞中心</h2> </div> <div id="eiwfgdr" class="hLocation"> <p><a href="http://dyxdggzs.com" target="_blank">EEPW首頁(yè)</a> > <a href="/info/industry/special/analog">模擬技術(shù)</a> > <a href="/info/articlelist/special/analog/type/5">設計應用</a> > 采樣保持電路名詞解釋?zhuān)蓸颖３制髯饔檬鞘裁矗?/p> </div> </div> </div>    <div class="qra0ol5" id="container"> <section> <article> <h1>采樣保持電路名詞解釋?zhuān)蓸颖３制髯饔檬鞘裁矗?/h1> <div id="kkhduhe" class="authorTimeSource"> <span>作者：</span> <span>時(shí)間：2024-09-12</span> <span>來(lái)源：李工談元器件</span> <link rel="stylesheet" type="text/css"/> <span style="float:right; width:130px;margin-right:0px; text-align:right;"> <div id="fgcqn6k" class="nav0"> <ul> <li><a href="javascript:void(0);"><img src="http://dyxdggzs.com/event/action/images/icon_add_4.png" width="20" border="0" align="absmiddle" />加入技術(shù)交流群</a> <ul> <li style="text-align:center;"><img src="http://dyxdggzs.com/event/company/images/code_1.jpg" width="130"><br />掃碼加入<br />和技術(shù)大咖面對面交流<br />海量資料庫查詢(xún)</li> </ul> </li> </ul> </div> </span> <span style="float:right; width:30px;margin-right:0px; text-align:right;"><a rel="nofollow">收藏</a></span> </div> <div id="p0mcmw0" class="hAd4_Afinal20a_back">  <iframe id='a890e388' name='a890e388' src='https://ad.eepw.com.cn/www/delivery/afr.php?zoneid=88&cb=INSERT_RANDOM_NUMBER_HERE' frameborder='0' scrolling='no' width='660' height='60'><a target='_blank'><img src='https://ad.eepw.com.cn/www/delivery/avw.php?zoneid=88&cb=INSERT_RANDOM_NUMBER_HERE&n=a635e61e' border='0' alt='' /></a></iframe> </div> <div style="margin-top:28px;"></div> <div id="hmv69mz" class="content" id="contentDiv" style="position:relative;"> <div id="tcmw060" class="ad_300x180_Afinal13_back">  <iframe id='a225770a' name='a225770a' src='https://ad.eepw.com.cn/www/delivery/afr.php?zoneid=87&cb=INSERT_RANDOM_NUMBER_HERE' frameborder='0' scrolling='no' width='300' height='200'><a target='_blank'><img src='https://ad.eepw.com.cn/www/delivery/avw.php?zoneid=87&cb=INSERT_RANDOM_NUMBER_HERE&n=a576c0a2' border='0' alt='' /></a></iframe> </div> <span id="contentlabels" style="font-size:14px;"><p style="text-indent: 2em;"><span style="font-size: 16px;">今天給大家分享的是<a class="contentlabel" href="http://dyxdggzs.com/news/listbylabel/label/采樣保持"><em>采樣保持</em></a>電路。</span></p>本文引用地址：<a href="http://dyxdggzs.com/article/202409/462914.htm">http://dyxdggzs.com/article/202409/462914.htm</a><p style="text-indent: 2em;"><span style="font-size: 16px;">主要是關(guān)于：<a class="contentlabel" href="http://dyxdggzs.com/news/listbylabel/label/采樣保持"><em>采樣保持</em></a>名詞解釋、<a class="contentlabel" href="http://dyxdggzs.com/news/listbylabel/label/采樣保持"><em>采樣保持</em></a>電路工作原理、<a class="contentlabel" href="http://dyxdggzs.com/news/listbylabel/label/采樣保持電路"><em>采樣保持電路</em></a>功能、<a class="contentlabel" href="http://dyxdggzs.com/news/listbylabel/label/采樣保持電路"><em>采樣保持電路</em></a>作用以及<a class="contentlabel" href="http://dyxdggzs.com/news/listbylabel/label/采樣保持電路"><em>采樣保持電路</em></a>設計。</span></p><h1 style="text-indent: 2em;"><span style="font-size: 16px;">一、采樣保持名詞解釋</span></h1><p style="text-indent: 2em;"><span style="font-size: 16px;">采樣保持電路從模擬輸入信號中提取樣本并將它們保持特定時(shí)間段，然后輸出輸入信號的采樣部分。</span></p><p style="text-indent: 2em;"><span style="font-size: 16px;">采樣保持電路僅適用于對幾微秒的輸入信號進(jìn)行采樣。</span></p><p style="text-indent: 2em;"><span style="font-size: 16px;">采樣保持電路由開(kāi)關(guān)器件、電容和運算放大器組成。電容是采樣和保持電路的核心，因為它是保持采樣輸入信號并根據命令輸入將其提供到輸出端的電路。</span></p><p style="text-indent: 2em;"><span style="font-size: 16px;">采樣電路主要用于模數轉換器，以消除輸入信號中的某些變化，這些變化可能會(huì )破壞轉換過(guò)程。</span></p><p style="text-indent: 2em;"><span style="font-size: 16px;">最簡(jiǎn)單的采樣保持電路原理圖如下圖所示。</span></p><p style="text-indent: 2em;"><img src="https://editerupload.eepw.com.cn/fetch/202409/39d8298c40f32002ead5de9786a25079.jpeg" class="syl-page-img"/></p><p style="text-indent: 2em;"><span style="font-size: 16px;">最簡(jiǎn)單的采樣保持電路</span></p><ul style="box-sizing: border-box; margin: 20px 30px; padding: 0px; border: 0px; counter-reset: ul_list 0; color: rgb(34, 34, 34); font-family: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "WenQuanYi Micro Hei", "Helvetica Neue", Arial, sans-serif; font-size: 18px; text-align: justify; text-wrap: wrap; background-color: rgb(255, 255, 255);" class=" list-paddingleft-2"><li><p style="text-indent: 2em;"><span style="font-size: 16px;">Vs：輸出信號</span></p></li><li><p style="text-indent: 2em;"><span style="font-size: 16px;">C：電</span></p></li><li><p style="text-indent: 2em;"><span style="font-size: 16px;">S：作為開(kāi)關(guān)工作的 MOS 晶體管</span></p></li><li><p style="text-indent: 2em;"><span style="font-size: 16px;">Va：輸入信號</span></p></li></ul><h1 style="text-indent: 2em;"><span style="font-size: 16px;">二、采樣保持電路</span></h1><p style="text-indent: 2em;"><span style="font-size: 16px;">典型的采樣保持電路框圖如下：</span></p><p style="text-indent: 2em;"><img src="https://editerupload.eepw.com.cn/fetch/202409/9d4c3c5fdba79e1b732f534ea206ae17.jpeg" class="syl-page-img"/></p><p style="text-indent: 2em;"><span style="font-size: 16px;">采樣保持電路框圖</span></p><p style="text-indent: 2em;"><span style="font-size: 16px;">一般施加的輸入電壓信號是連續變化的<a class="contentlabel" href="http://dyxdggzs.com/news/listbylabel/label/模擬信號"><em>模擬信號</em></a>。提供命令輸入來(lái)觸發(fā)輸入信號的采樣和保持。命令輸入只不過(guò)是一個(gè)開(kāi)/關(guān)信號，用于開(kāi)始/停止輸入信號的采樣，一般是PWM。采樣和保持過(guò)程取決于命令輸入。</span></p><p style="text-indent: 2em;"><span style="font-size: 16px;">當開(kāi)關(guān)閉合時(shí)，信號被采樣，當它打開(kāi)時(shí)，電路保持輸出信號。開(kāi)關(guān)的開(kāi)/關(guān)狀態(tài)由指令輸入控制。</span></p><p style="text-indent: 2em;"><span style="font-size: 16px;">時(shí)鐘脈沖激活開(kāi)關(guān) (S)。根據時(shí)鐘脈沖，輸入信號被采樣或保持為最近采樣的值。當時(shí)鐘脈沖為高電平時(shí)對輸入信號進(jìn)行采樣，并在時(shí)鐘脈沖為低電平時(shí)保留這些值。該電路可以在兩種模式下工作，這取決于采樣和保持時(shí)鐘信號的邏輯電平。時(shí)鐘切換的輸入脈沖和電路的輸出如下圖所示。</span></p><p style="text-indent: 2em;"><img src="https://editerupload.eepw.com.cn/fetch/202409/27adb0ed86b1f4de96aa96f93a0c8e02.jpeg" class="syl-page-img"/></p><p style="text-indent: 2em;"><span style="font-size: 16px;">開(kāi)關(guān)時(shí)鐘脈沖和電路輸出</span></p><h1 style="text-indent: 2em;"><span style="font-size: 16px;">三、采樣保持電路功能及工作原理</span></h1><p style="text-indent: 2em;"><span style="font-size: 16px;">采樣保持電路的工作原理可以通過(guò)其組件的工作原理來(lái)簡(jiǎn)單理解。構建采樣保持電路的主要部件包括一個(gè) N 溝道增強型 MOSFET、一個(gè)電容和一個(gè)高精度運算放大器。</span></p><p style="text-indent: 2em;"><span style="font-size: 16px;">作為開(kāi)關(guān)元件，使用了 N 溝道增強型 MOSFET。輸入電壓通過(guò)其漏極端子給出，控制電壓也通過(guò)其柵極端子給出。</span></p><p style="text-indent: 2em;"><span style="font-size: 16px;">當施加控制電壓的+ve 脈沖時(shí)，MOSFET將處于激活狀態(tài)。它充當閉合開(kāi)關(guān)。相反，當控制電壓為零時(shí)，MOSFET 將處于停用狀態(tài)并作為打開(kāi)的開(kāi)關(guān)工作。</span></p><p style="text-indent: 2em;"><span style="font-size: 16px;">使用運算放大器的采樣和保持電路：</span></p><p style="text-indent: 2em;"><img src="https://editerupload.eepw.com.cn/fetch/202409/4d768f017a371992d24dfac754a57e3e.jpeg" class="syl-page-img"/></p><p style="text-indent: 2em;"><span style="font-size: 16px;">使用運算放大器的采樣和保持電路</span></p><p style="text-indent: 2em;"><span style="font-size: 16px;">當 MOSFET 作為閉合開(kāi)關(guān)工作時(shí)，通過(guò)漏極端子提供給它的<a class="contentlabel" href="http://dyxdggzs.com/news/listbylabel/label/模擬信號"><em>模擬信號</em></a>將被饋送到電容器，然后電容將充電至其峰值。當釋放開(kāi)關(guān)時(shí)，電容停止充電。由于電路末端連接了高阻抗運算放大器，電容將因此而產(chǎn)生高阻抗，因此無(wú)法放電。</span></p><p style="text-indent: 2em;"><span style="font-size: 16px;">指向電容將電荷保持準確的時(shí)間量，這可以稱(chēng)為持有期。而產(chǎn)生i/p電壓樣本的時(shí)間稱(chēng)為采樣周期。運算放大器在整個(gè)保持期間處理的 o/p。因此，持有期對運算放大器有影響。</span></p><h1 style="text-indent: 2em;"><span style="font-size: 16px;">四、采樣保持電路類(lèi)型</span></h1><p style="text-indent: 2em;"><span style="font-size: 16px;">采樣保持電路有多種設計，下面將討論一些采樣保持電路，下面這些討論的電路都使用了 JFET 作為開(kāi)關(guān)。</span></p><p style="text-indent: 2em;"><span style="font-size: 16px;">在電路中，JFET 在采樣時(shí)間內打開(kāi)，在此期間保持電容中的電荷達到最大值，不能超過(guò)輸入信號。當采樣周期結束時(shí)，JFET 關(guān)斷，保持電容與輸入信號斷開(kāi)。通過(guò)斷開(kāi)電容，確保輸出與輸入電壓保持一致，并且不隨輸入信號的變化而變化?？赡苁潜３蛛娙輧啥说碾妷壕哂械蛪翰畈⑶沂褂眠@兩個(gè)緩沖器來(lái)補償的情況，一個(gè)在輸出端，另一個(gè)在輸入端。</span></p><p style="text-indent: 2em;"><span style="font-size: 16px;">1、開(kāi)環(huán)采樣保持電路</span></p><p style="text-indent: 2em;"><img src="https://editerupload.eepw.com.cn/fetch/202409/babce8c2c679369b4c521f8858abb082.png" class="syl-page-img"/></p><p style="text-indent: 2em;"><span style="font-size: 16px;">開(kāi)環(huán)式采樣保持電路</span></p><p style="text-indent: 2em;"><span style="font-size: 16px;">由于這是一個(gè)開(kāi)環(huán)電路，加上電路中沒(méi)有反饋（閉環(huán)配置），因此它比閉環(huán)電路更快。另一方面，閉環(huán)設計通過(guò)反饋產(chǎn)生更高的精度。對于采樣和保持電路，采集時(shí)間是一個(gè)關(guān)鍵因素，必須盡可能短。</span></p><p style="text-indent: 2em;"><span style="font-size: 16px;">2、閉環(huán)式采樣</span></p><p style="text-indent: 2em;"><span style="font-size: 16px;">下面的反饋回路電路是上一個(gè)的改進(jìn)變體，因為 JFET 的導通電阻包含在反饋回路中，所以其他兩個(gè)參數決定了采集時(shí)間。</span></p><p style="text-indent: 2em;"><img src="https://editerupload.eepw.com.cn/fetch/202409/9ad5736875a5a8dcd29e0b899d4cd36c.png" class="syl-page-img"/></p><p style="text-indent: 2em;"><span style="font-size: 16px;">閉環(huán)采樣保持電路</span></p><p style="text-indent: 2em;"><span style="font-size: 16px;">3、閉環(huán)采樣和保持電壓增益電路</span></p><p style="text-indent: 2em;"><span style="font-size: 16px;">通過(guò)提供電壓增益，以下電路表現就很好。要計算電路的電壓增益，可以使用反饋電阻 (Rf) 和輸入電阻 (R1)（電壓增益的公式如下所示）。</span></p><p style="text-indent: 2em;"><span style="font-size: 16px;">A = 1 + (Rf / R1)</span></p><p style="text-indent: 2em;"><img src="https://editerupload.eepw.com.cn/fetch/202409/0ec9f7d84780d3174d661df7b82bb0de.png" class="syl-page-img"/></p><p style="text-indent: 2em;"><span style="font-size: 16px;">閉環(huán)采樣和保持電壓增益電路</span></p><p style="text-indent: 2em;"><span style="font-size: 16px;">4、具有同相端子的閉環(huán)采樣和保持電壓增益電路</span></p><p style="text-indent: 2em;"><span style="font-size: 16px;">最后一個(gè)電路比上一個(gè)電路提供了一些優(yōu)勢。最重要的變化是保持電容的位置，這導致的同相端電壓相等，電容兩端的電壓除以放大器的增益。因此，保持電容充電更快，從而導致采集時(shí)間變得更快。</span></p><p style="text-indent: 2em;"><img src="https://editerupload.eepw.com.cn/fetch/202409/5e862d4b602a2f6d549a1fa7f26a952b.png" class="syl-page-img"/></p><p style="text-indent: 2em;"><span style="font-size: 16px;">具有同相端子的閉環(huán)采樣和保持電壓增益電路</span></p><h1 style="text-indent: 2em;"><span style="font-size: 16px;">五、采樣保持電路設計</span></h1><p style="text-indent: 2em;"><span style="font-size: 16px;">1、采樣保持電路設計所需組件</span></p><ul style="box-sizing: border-box; margin: 20px 30px; padding: 0px; border: 0px; counter-reset: ul_list 0; color: rgb(34, 34, 34); font-family: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "WenQuanYi Micro Hei", "Helvetica Neue", Arial, sans-serif; font-size: 18px; text-align: justify; text-wrap: wrap; background-color: rgb(255, 255, 255);" class=" list-paddingleft-2"><li><p style="text-indent: 2em;"><span style="font-size: 16px;">UA741運算放大器 IC</span></p></li><li><p style="text-indent: 2em;"><span style="font-size: 16px;">2N4339 N 溝道 JFET</span></p></li><li><p style="text-indent: 2em;"><span style="font-size: 16px;">模擬輸入和脈沖輸入發(fā)生器</span></p></li><li><p style="text-indent: 2em;"><span style="font-size: 16px;">電阻（10k、10M）</span></p></li><li><p style="text-indent: 2em;"><span style="font-size: 16px;">二極管 (1N4007)</span></p></li><li><p style="text-indent: 2em;"><span style="font-size: 16px;">電容（0.1uf - 1nos）</span></p></li></ul><p style="text-indent: 2em;"><img src="https://editerupload.eepw.com.cn/fetch/202409/72f7c334a03043a7b65efd9cf4aa3802.png" class="syl-page-img"/></p><p style="text-indent: 2em;"><span style="font-size: 16px;">采樣保持電路</span></p><p style="text-indent: 2em;"><span style="font-size: 16px;">為了在輸入端提供<a class="contentlabel" href="http://dyxdggzs.com/news/listbylabel/label/模擬信號"><em>模擬信號</em></a>，你可以使用 6-0-6 降壓變壓器。而且，為了向晶體管提供脈沖或 PWM 輸入，你可以在非穩態(tài)模式下使用 555 定時(shí)器 IC。我們還需要一個(gè)直流電源來(lái)為運算放大器 IC 提供 Vcc，其范圍為 +5 至 +15V。</span></p><p style="text-indent: 2em;"><span style="font-size: 16px;">2、采樣保持電路設計的工作原理</span></p><p style="text-indent: 2em;"><span style="font-size: 16px;">你在電路上面圖中可以看到的，我們使用了 2N4339 N 溝道 JFET、一個(gè)運算放大器和一個(gè)電容。命令輸入（PWM 輸入）連接到 2N4339 晶體管的柵極端子。</span></p><p style="text-indent: 2em;"><span style="font-size: 16px;">將命令輸入的初始電壓設置為 -15V，脈沖電壓設置為 15V。因此，只要命令輸入電壓為負，二極管就會(huì )正向偏置，從而導致晶體管導通，反之亦然。</span></p><p style="text-indent: 2em;"><span style="font-size: 16px;">運算放大器741在這里用作電壓跟隨器，因為電壓跟隨器通常具有高輸入阻抗和低輸出阻抗。這在輸入信號為低電流時(shí)使用，因為電壓跟隨器可以為下一級提供足夠的電流。</span></p><p style="text-indent: 2em;"><span style="font-size: 16px;">因此，每當命令輸入為高電平時(shí)，晶體管就作為閉合開(kāi)關(guān)工作，此時(shí)電容開(kāi)始充電至其峰值并存儲輸入信號的樣本，以便晶體管處于導通狀態(tài)。</span></p><p style="text-indent: 2em;"><span style="font-size: 16px;">現在，當命令輸入為低電平時(shí)，晶體管作為開(kāi)路開(kāi)關(guān)工作，電容將經(jīng)歷高阻抗，因此它無(wú)法放電并在特定時(shí)間段內保持電荷。這個(gè)時(shí)間被稱(chēng)為持有期。并且，電路對輸入信號進(jìn)行采樣的時(shí)間稱(chēng)為采樣周期。</span></p><h1 style="text-indent: 2em;"><span style="font-size: 16px;">六、采樣保持電路性能參數</span></h1><p style="text-indent: 2em;"><span style="font-size: 16px;">1、輸入輸出波形</span></p><p style="text-indent: 2em;"><img src="https://editerupload.eepw.com.cn/fetch/202409/ca03ccd4f9f689ea95068dc3edd70b98.jpeg" class="syl-page-img"/></p><p style="text-indent: 2em;"><span style="font-size: 16px;">采樣保持電路輸入輸出波形</span></p><p style="text-indent: 2em;"><span style="font-size: 16px;">從上圖中可以清楚地看出，采樣保持電路在命令輸入為高電平時(shí)對輸入信號進(jìn)行采樣，并在輸出端復制相同的采樣。當命令輸入為低電平時(shí)，它保持采樣信號的最后一個(gè)電壓電平。</span></p><p style="text-indent: 2em;"><span style="font-size: 16px;">如果我們模擬我們的采樣保持電路，我們將得到下面波形。</span></p><p style="text-indent: 2em;"><img src="https://editerupload.eepw.com.cn/fetch/202409/aa3f8cc6c2d4de83d71f82c3c951f73c.png" class="syl-page-img"/></p><p style="text-indent: 2em;"><span style="font-size: 16px;">采樣保持電路輸入輸出波形</span></p><p style="text-indent: 2em;"><span style="font-size: 16px;">2、采集時(shí)間</span></p><p style="text-indent: 2em;"><span style="font-size: 16px;">在采樣期間，采集時(shí)間是保持電容中的電荷達到接近輸入電壓的水平所需的時(shí)間。采集時(shí)間受三個(gè)因素影響：</span></p><ul style="box-sizing: border-box; margin: 20px 30px; padding: 0px; border: 0px; counter-reset: ul_list 0; color: rgb(34, 34, 34); font-family: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "WenQuanYi Micro Hei", "Helvetica Neue", Arial, sans-serif; font-size: 18px; text-align: justify; text-wrap: wrap; background-color: rgb(255, 255, 255);" class=" list-paddingleft-2"><li><p style="text-indent: 2em;"><span style="font-size: 16px;">RC 時(shí)間常數，其中 C 代表保持電容，R 代表導通電阻，用于計算時(shí)間長(cháng)度的常數。</span></p></li><li><p style="text-indent: 2em;"><span style="font-size: 16px;">運算放大器壓擺率，是晶體管中的晶體管中的晶體管中的晶體管中的晶體管的速率。</span></p></li><li><p style="text-indent: 2em;"><span style="font-size: 16px;">運算最大放大器的輸出電流。</span></p></li></ul><p style="text-indent: 2em;"><img src="https://editerupload.eepw.com.cn/fetch/202409/01ba5e3858a2cf4ce4a4d455888660ca.jpeg" class="syl-page-img"/></p><p style="text-indent: 2em;"><span style="font-size: 16px;">采集時(shí)間</span></p><p style="text-indent: 2em;"><span style="font-size: 16px;">3、光圈時(shí)間</span></p><p style="text-indent: 2em;"><span style="font-size: 16px;">光圈時(shí)間是保持命令開(kāi)始和 VO 監控 Vi 之間的延遲?？珧寗?dòng)器和開(kāi)關(guān)電路的傳播延遲是這種延遲的最常見(jiàn)來(lái)源，保持命令必須提前一個(gè)孔徑時(shí)間啟動(dòng)，以獲得最佳時(shí)序。</span></p><p style="text-indent: 2em;"><span style="font-size: 16px;">4、孔徑不確定度</span></p><p style="text-indent: 2em;"><span style="font-size: 16px;">孔徑時(shí)間并不一致，并且因樣本而異，這種類(lèi)型的不確定性被稱(chēng)為孔徑不確定性。這將對保持指揮部的發(fā)展產(chǎn)生重大影響。</span></p><p style="text-indent: 2em;"><span style="font-size: 16px;">5、保持模式穩定時(shí)間</span></p><p style="text-indent: 2em;"><span style="font-size: 16px;">應用保持命令后，輸出 (VO ) 在特定誤差帶百分比（0.01%、0.1% 或 1%）內的穩定時(shí)間稱(chēng)為保持模式穩定時(shí)間。</span></p><p style="text-indent: 2em;"><span style="font-size: 16px;">6、保持步長(cháng)</span></p><p style="text-indent: 2em;"><span style="font-size: 16px;">在從采樣模式切換到保持模式時(shí)，寄生電容可能會(huì )導致保持電容和開(kāi)關(guān)之間發(fā)生意外的電荷轉移。這對電容電壓和輸出電壓都有影響。保持步長(cháng)是輸出電壓和所需值之間的差值。</span></p><p style="text-indent: 2em;"><span style="font-size: 16px;">7、饋通</span></p><p style="text-indent: 2em;"><span style="font-size: 16px;">在保持模式下，開(kāi)關(guān)的寄生電容可能會(huì )在 Vi和 Vo之間產(chǎn)生交流耦合。出現饋通現象，導致輸出電壓隨輸入電壓的變化而變化。</span></p></span>  <div class="zvakuol" id="coverDiv" class="article_reg" style="width:100%;overflow:hidden;display:none;z-index:10;position:absolute;left:0;background:#fff;"> <center> <img src="https://webstorage.eepw.com.cn/images/display/reg.jpg" border="0" usemap="#Map" /> <map name="Map" id="Map"> <area shape="rect" coords="133,235,319,253" target="_blank" /> <area shape="rect" coords="132,315,319,335" /> </map> </center> </div>  <span id="04jghvf" class="hAd8"> <br></span>   </div> </article> <div id="08czjas" class="clear"></div> <br/> <div id="tgqeoyc" class="hAd6"> <div class="mw0kcqt" id="relA" style="width:auto;height:auto;"> <ul> 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