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class="content"> <div id="6aplaizydtj" 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="/Article/dianganxianquanchang_1.html">電感線圈廠家淺析脈沖變壓??/a></div> <div id="6aplaizydtj" class="list4nr"> <div id="6aplaizydtj" class="n_info_con" id="printableview"> <h3> 電感線圈廠家淺析脈沖變壓??/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(shí)間??016-04-01 16:37:00</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">　　脈沖變壓器的常識有哪些呢?電感線圈廠家就來淺析一下脈沖變壓器的詳細(xì)含義，工作原理及其應(yīng)用??/span></p> <p style="text-align: center"><span style="font-size: 14px"><img style="width: 672px; height: 423px" alt="" width="869" height="624" src="/UploadFiles/FCK/共模線圈(7).jpg" /></span></p> <p> </p> <p><span style="font-size: 14px">　　一、脈沖變壓器概述</span></p> <p> </p> <p><span style="font-size: 14px">　　脈沖變壓器是一種寬頻變壓器，對通信用的變壓器而言，非線性畸變是一個(gè)極重要的指標(biāo)，因此要求變壓器工作在磁心的起始導(dǎo)磁率處，以至即使象輸入變壓器那樣功率非常小的變壓器，外形也不得不取得相當(dāng)大。除了要考慮變壓器的頻率特性，怎樣減少損耗也是一個(gè)很關(guān)心的問題??/span></p> <p> </p> <p><span style="font-size: 14px">　　與此相反，對脈沖變壓器而言，因?yàn)橹饕紤]波形傳送問題。即使同樣是寬頻帶變壓器，但只要波形能滿足設(shè)計(jì)要求，磁心也可以工作在非線性區(qū)域??/span></p> <p> </p> <p><span style="font-size: 14px">　　因此，其外形可做得比通信用變壓器小很多。還有，除通過大功率脈沖外，變壓器的傳輸損耗一般還不大。因此，所取磁心的尺寸大小取決于脈沖通過時(shí)磁通量是否飽和，或者取決于鐵耗引起的溫升是否超過允許值??/span></p> <p> </p> <p><span style="font-size: 14px">　　今日脈沖變壓器的最新分析方法，是將脈沖變壓器按分布參數(shù)方式來處理，被稱作傳輸型脈沖變壓器??/span></p> <p> </p> <p><span style="font-size: 14px">　　二、脈沖變壓器工作原理</span></p> <p> </p> <p><span style="font-size: 14px">　　脈沖變壓器利用鐵心的磁飽和性能把輸入的正弦波電壓變成窄脈沖形輸出電壓的變壓器?？捎糜谌紵鞯狞c(diǎn)火、晶閘管的觸發(fā)等。脈沖變壓器結(jié)構(gòu)為原繞組套在斷面較大的由硅鋼片疊成的鐵心柱上，副繞組套在坡莫合金材料制成的斷面較小的易于高度飽和的鐵心柱上，在兩柱中間可設(shè)置磁分路??/span></p> <p> </p> <p><span style="font-size: 14px">　　電壓和磁通的關(guān)系，輸入電壓u1是正弦波，在左面鐵心中產(chǎn) 生正弦磁??Phi;1。右面鐵心中磁??Phi;2高度飽和，是平頂波，它只有在零值附近發(fā)生變化，并立即飽和達(dá)到定值??/span></p> <p> </p> <p><span style="font-size: 14px">　　??Phi;2過零??/span><span style="font-size: 14px">的瞬間，在副繞組中就感應(yīng)出極陡的窄脈沖電動勢e2。磁分路有氣隙存在，Φσ基本上按線性變化，與漏磁相似，其作用在于保??Phi;1為正弦波??/span></p> <p> </p> <p><span style="font-size: 14px">　　三、脈沖變壓器的應(yīng)??/span></p> <p> </p> <p><span style="font-size: 14px">　　脈沖變壓器廣泛用于雷達(dá)、變換技??負(fù)載電阻與饋線特性阻抗的匹配;升高或降低脈沖電??改變脈沖的極??變壓器次級電路和初級電路的隔離應(yīng)用幾個(gè)次級繞組以取得相位關(guān)系;隔離??相同，但就磁芯的磁化過程這一點(diǎn)來看是有區(qū)別的，分析如??</span></p> <p> </p> <p><span style="font-size: 14px">　　1、脈沖變壓器是一個(gè)工作在暫態(tài)中的變壓器，也就是說，脈沖過程在短暫的時(shí)間內(nèi)發(fā)生，是一個(gè)頂部平滑的方波，而一般普通變壓器是工作在連續(xù)不變的磁化中的，其交變信號是按正弦波形變??</span></p> <p> </p> <p><span style="font-size: 14px">　　2??脈沖信號是重復(fù)周期，一定間隔的，且只有正極或負(fù)極的電壓，而交變信號是連續(xù)重復(fù)的，既有正的也有負(fù)的電壓值??/span></p> <p> </p> <p><span style="font-size: 14px">　　3??脈沖變壓器要求波形傳輸時(shí)不失真，也就是要求波形的前沿，頂降都要盡可能小，然而這兩個(gè)指標(biāo)是矛盾的??/span></p> </div> <div id="6aplaizydtj" class="apage" 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