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class="plc2"> 當(dāng)前位置??a href="/">首頁</a> » <a href="/news/">資訊中心</a> » <a href="/News/News-0001,0002,0006.shtml"> 晨飛資訊</a> » <a href="">說說高頻變壓器與開關(guān)電源之間的聯(lián)系</a></div> <div id="6aplaizydtj" class="list4nr"> <div id="6aplaizydtj" class="n_info_con" id="printableview"> <h3> 說說高頻變壓器與開關(guān)電源之間的聯(lián)系</h3> <div id="6aplaizydtj" class="info_con_tit"> <div id="6aplaizydtj" class="info_con_tit"> <div id="6aplaizydtj" class="n_tit"> <span>文章出處??a href=""><a >深圳市晨飛電子有限公??/a></a></span><span>網(wǎng)責(zé)任編輯：<a >NSW</a></span><span>作者：<a >NSW</a></span><span>人氣??span id="cntrHits">-</span></span><span>發(fā)表時間??015-06-19 10:33:00</span> <div id="6aplaizydtj" class="newchang">  <div class="6aplaizydtj" id="ckepop"> <a class="jiathis jiathis_txt jtico jtico_jiathis" target="_blank">分享到：</a> <a class="jiathis_button_qzone">QQ空間</a> <a class="jiathis_button_tsina"> 新浪微博</a> <a class="jiathis_button_tqq">騰訊微博</a> <a class="jiathis_button_tsohu">搜狐微博</a> <a class="jiathis_button_t163">網(wǎng)易微博</a> <a class="jiathis_button_tools_1"></a><a class="jiathis_button_tools_2"></a> </div> <script type="text/javascript"> var jiathis_config = { "data_track_clickback": true };</script> <script type="text/javascript" src="http://v2.jiathis.com/code/jia.js?uid=899792" charset="utf-8"></script>  </div> </div> </div> </div> <div class="6aplaizydtj" id="cntrBody"> <p><span style="font-size: 14px">　　高頻變壓器是開關(guān)電源中進(jìn)行能量儲存與傳輸?shù)闹匾考瑔纹_關(guān)電源中高頻變壓器性能的優(yōu)劣，不僅對電源效率有較大的影響，而且直接關(guān)系到電源的其它技術(shù)指標(biāo)和電磁兼容??EMC)。將高頻傳輸線繞在具有高導(dǎo)磁??u)低損耗的鐵氧體磁環(huán)上就變成傳輸絕變壓器，其電路從表面上看似乎與普通變壓器沒有多大差別，但實際上它們傳遞能量的方式是不相同的??/span></p> <p> </p> <p><span style="font-size: 14px">　　為此，一個高效率<strong><a href="http://linhang.com.cn/product/">高頻變壓??/a></strong>應(yīng)具備直流損耗和交流損耗低、漏感小、繞組本身的分布電容及各繞組之間的耦合電容要小等條件??/span></p> <p> </p> <p><span style="font-size: 14px">　　所謂的高頻開關(guān)，一般都是指高頻開關(guān)電源。其基本控制原理為：開關(guān)以一定的時間間隔重復(fù)地接通和斷開：在開關(guān)接通時，輸入電源通過開關(guān)和濾波電路提供給負(fù)載，在整個開關(guān)接通期間，電源向負(fù)載提供能??當(dāng)開關(guān)斷開時，輸入電源便中斷了能量的提供。因此，輸入電源向負(fù)載提供能量是斷續(xù)的，為使負(fù)載能得到連續(xù)的能量提供，開關(guān)穩(wěn)壓電源必須要有一套儲能裝置，在開關(guān)接通時將一部份能量儲存起來，在開關(guān)斷開時，向負(fù)載釋放??/span></p> <p> </p> <p><span style="font-size: 14px">　　改變開關(guān)接通時間和工作周期的比例，電壓的平均值也隨之改變，因此，隨著負(fù)載及輸入電源電壓的變化自動調(diào)整便能使輸出電壓維持不變。改變接通時間和工作周期比例亦即改變脈沖的占空比，這種方法稱??ldquo;時間比率控制”(Time Ratio Control,縮寫為TRC)。所謂直流斷路器，即是在直流配電系統(tǒng)中提供直流回路通斷的開關(guān)，以對過載、短路等過電流故障提供可靠保護(hù)??/span></p> </div> <div id="6aplaizydtj" class="apage" id="showfenye">  <script type="text/javascript"> var pagecont=1; if(pagecont > 2) { var ss = new Cls_jsPage(1, 1, 5, "ss"); ss.setPageSE("gaopinbianyaqiyukaig_", ".html"); ss.setPageInput("Page"); ss.setUrl(""); ss.setPageFrist("<a disabled='true'class='ob'>首頁</a>", "首頁"); ss.setPagePrev("<a disabled='true'class='ob'>上一??/a>", "上一??); ss.setPageNext("<a 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