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id="6aplaizydtj" class="clear"> </div>  <script type="text/javascript"> initCommonHeader(); </script> <script type="text/javascript"> var OBJ_TITLE = "高頻變壓器直流損耗的產(chǎn)生和解決措??; var OBJ_ID = "530"; var MARK = "news"; var ARR_AD_MARK = ["news_detail_1", "news_detail_2", "news_detail_3"]; var SID = "0001,0002,0006"; //權(quán)限ID var AUTHORITY_ID = ""; </script> <script src="/JS/Cls_jsPage.js"></script>  <div id="6aplaizydtj" class="content"> <div id="6aplaizydtj" class="plc2"> 當(dāng)前位置??a href="/">首頁(yè)</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/gaopinbianyaqizhiliu_1.html">高頻變壓器直流損耗的產(chǎn)生和解決措??/a></div> <div id="6aplaizydtj" class="list4nr"> <div id="6aplaizydtj" class="n_info_con" id="printableview"> <h3> 高頻變壓器直流損耗的產(chǎn)生和解決措??/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??015-11-12 14:04:00</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> </p> <p><span style="font-size: 14px">　　<a href="http://m.linhang.com.cn">高頻變壓??/a>在設(shè)計(jì)的時(shí)候要特別注意損耗的問(wèn)題,一般損耗可分為直流和交流兩??其中直流損耗通常都是由于線圈的銅損耗造成的。高頻變壓器的交流損耗是由高頻電流的趨膚效應(yīng)以及磁芯的損耗引起的。高頻電流通過(guò)導(dǎo)線時(shí)總是趨向于從表面流過(guò)，這會(huì)使導(dǎo)線的有效流通面積減小，并使導(dǎo)線的交流等效阻抗遠(yuǎn)高于銅電阻??/span></p> <p> </p> <p><span style="font-size: 14px">　　高頻電流對(duì)導(dǎo)體的穿透能力與開(kāi)關(guān)頻率的平方根成反比，為減小交流銅阻抗，導(dǎo)線半徑不得超過(guò)高頻電流可達(dá)深度??倍。為了減小趨膚效應(yīng)，實(shí)際可用更細(xì)的導(dǎo)線多股并繞，而不用一根粗導(dǎo)線繞制。在設(shè)計(jì)的時(shí)候必須把漏感減至最小。因?yàn)槁└杏螅a(chǎn)生的尖峰電壓幅度愈高，漏極鉗位電路的損耗就愈大，這必然導(dǎo)致電源效率降低。對(duì)于一個(gè)符合絕緣及安全性標(biāo)準(zhǔn)的高頻變壓器，其漏感量應(yīng)為次級(jí)開(kāi)路時(shí)初級(jí)電感量的1%??%。要想達(dá)??%以下的指標(biāo)，在制造工藝上將難于實(shí)現(xiàn)。減小漏感時(shí)可采取以下措施：</span></p> <p> </p> <p style="text-align: center"><span style="font-size: 14px"><img alt="高頻變壓器展?? width="168" height="168" src="/UploadFiles/FCK/高頻變壓??9).jpg" /></span></p> <p> </p> <p> </p> <p><span style="font-size: 14px">　　1.減小初級(jí)繞組的匝數(shù)NP;</span></p> <p> </p> <p><span style="font-size: 14px">　　2.增加繞組的高、寬??</span></p> <p> </p> <p><span style="font-size: 14px">　　3.減小各繞組之間的絕緣??</span></p> <p> </p> <p><span style="font-size: 14px">　　4.增加繞組之間的耦合程度;</span></p> <p> </p> <p><span style="font-size: 14px">　　5.增大繞組的寬??例如選EE型磁芯，以增加骨架寬度b)??/span></p> <p><span style="font-size: 14px"><br /> </span> </p> <p> </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("gaopinbianyaqizhiliu_", ".html"); ss.setPageInput("Page"); ss.setUrl(""); ss.setPageFrist("<a disabled='true'class='ob'>首頁(yè)</a>", "首頁(yè)"); ss.setPagePrev("<a disabled='true'class='ob'>上一??/a>", "上一??); ss.setPageNext("<a disabled='true'class='ob'>下一??/a>", "下一??); ss.setPageLast("<a disabled='true'class='ob'>尾頁(yè)</a>", "尾頁(yè)"); ss.setPageText("{$PageNum}", "{$PageNum}"); ss.setPageTextF("{$PageTextF}", "{$PageTextF}"); ss.setPageSelect("{$PageNum}", "{$PageNum}"); ss.setPageCss("o", "", 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