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src="https://tyunfile.71360.com/WaterMark/UploadFile/baoyixinneng/637406041362838188/2093902.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div><div id="3moamof" class="smallimg"><div><p class="pic"><img src="https://tyunfile.71360.com/WaterMark/UploadFile/baoyixinneng/637406041362838188/2093902.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div></div><div id="iczlijv" class="content"><p><span>需求數(shù)量：</span>0</p><p><span>價格要求：</span>面議</p><p><span>所在地：</span>廣東省</p><p><span>包裝要求：</span><span style="color: #f30;"></span></p><p><span>產(chǎn)品關(guān)鍵詞：</span>蘇州被動式PFC電源批發(fā)廠家,PFC電源</p><p><span>***更新：</span>2020-11-13 01:16:38</p><p><span id="click" >瀏覽次數(shù)：1次</span></p><a rel="nofollow" class="button">聯(lián)系我們</a></div></div><div id="cmo7y3u" class="rightbox"><h3>公司基本資料信息</h3><p style="border:0;"><a rel="nofollow">深圳市保益新能電氣有限公司</a></p><p><span>聯(lián)系人：</span>葉立民</p><p><span>郵箱: </span>1301978383@qq.com</p><p><span>電話: </span>18675588113</p><p><span>傳真: </span>0755_</p><p><span>網(wǎng)址: </span>http://www.boynelectric.com</p><p><span>手機: </span>0755-21070344</p><p><span>地址: </span>大浪街道浪口社區(qū)華榮路496號德泰工業(yè)區(qū)1號廠房4層402</p><p>[當(dāng)前離線] <a rel="nofollow"> [加為商友] </a><a rel="nofollow"> [發(fā)送信件] </a></p></div></div><div id="rqhe2a3" class="page-proshow02"><p class="title">詳細說明</p><div id="dmifcjg" class="box"><p><p style="text-indent:25px">PFC電路原理?PFC就是“功率因數(shù)”的意思，蘇州被動式PFC電源批發(fā)廠家，主要用來表征電子產(chǎn)品對電能的利用效率。功率因數(shù)越高，說明電能的利用效率越高。?PFC有兩種，一種是無源PFC（也稱被動式PFC），一種是有源PFC（也稱主動式PFC），蘇州被動式PFC電源批發(fā)廠家。無源PFC一般采用電感補償方法使交流輸入的基波電流與電壓之間相位差減小來提高功率因數(shù)，但無源PFC的功率因數(shù)不是很高，只能達到0.7~0.8；有源PFC由電感電容及電子元器件組成，體積小，可以達到很高的功率因數(shù)，但成本要高出無源PFC一些。?有源PFC電路中往往采用高集成度的IC，采用有源PFC電路的PC電源，至少具有以下特點：?（1）?輸入電壓可以從90V到270V；（?2）?高于0.99的線路功率因數(shù)，并具有低損耗和高可靠等優(yōu)點；?（3）?IC的PFC還可用作輔助電源，因此在使用有源PFC電路中，蘇州被動式PFC電源批發(fā)廠家，往往不需要待機變壓器；?（4）?輸出不隨輸入電壓波動變化，因此可獲得高度穩(wěn)定的輸出電壓；?5）?有源PFC輸出DC電壓紋波很小，且呈100Hz/120Hz（工頻2倍）的正弦波，因此采用有源PFC的電源不需要采用很大容量的濾波電容。相對于被動PFC簡單直觀的外形，主動式PFC電路要復(fù)雜許多。蘇州被動式PFC電源批發(fā)廠家</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="蘇州被動式PFC電源批發(fā)廠家,PFC電源" src="https://tyunfile.71360.com/WaterMark/UploadFile/baoyixinneng/637406041362838188/2093902.png"></div><p style="text-indent:25px">目前電腦用的電源PFC有兩種，一是被動式PFC，也稱無源PFC；一是主動式PFC，也稱有源式PFC。1、主動式PFC主要由高頻電感、開關(guān)管、電容以及控制IC等元件構(gòu)成，可簡單的歸納為升壓型開關(guān)電源電路，這種電路的特點是構(gòu)造復(fù)雜，但優(yōu)點很多：功率因數(shù)高達0.99、低損耗和高可靠、輸入電壓可以從90V到270V(寬幅輸入)等，由于輸出DC電壓紋波很小，因此采用主動式PFC的電源不需要采用很大容量的濾波電容。2、被動式PFC通常為一塊體積較大的電感，其內(nèi)部由多塊硅鋼片外部纏繞銅線而組成，它的原理是采用電感補償方法通過使交流輸入的基波電流與電壓之間相位差減小來提高功率因數(shù)，被動式PFC的功率因數(shù)不是很高，只能達到0.7~0.8，因此其效率也比較低，發(fā)熱量也比較大。被動式PFC也并非一無是處，其結(jié)構(gòu)簡單，穩(wěn)定性上表現(xiàn)好，比較適合中低端電源。3、主動式PFC設(shè)計復(fù)雜，成本較高；主動式PFC比被動式PFC性能要好，更加節(jié)能；主動式PFC的功率因數(shù)更高；被動式PFC電源成本低。正因如此，主動式PFC已成為當(dāng)前電腦主流電源。如果你只是想用低端的電腦穩(wěn)定使用的話，那買個被動式PFC的電源使用沒問題。武漢被動式電源pfc采購主動式PFC配合好的電路設(shè)計，能適應(yīng)更高的電壓范圍。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="蘇州被動式PFC電源批發(fā)廠家,PFC電源" src="https://tyunfile.71360.com/WaterMark/UploadFile/baoyixinneng/637406041293638980/8296733.png"></div><p style="text-indent:25px">如何快速維修pfc電路：6、保護電路，在液晶采電開關(guān)電源中，除具有常見的尖峰吸收保護電路外，還設(shè)在+24V、+ 12V和+5V電壓的過壓、過載保護電路，其保護電路多采用四運算放大器LM324、四電壓比較器LM339、雙電壓比較器LM393或雙運算放大器LM358。過流過壓保護電路，在維修時可脫開不用，如果電壓恢復(fù)正常，說明保護電路引起，這時要分步斷開是哪路起作用。然后再進行維修。7、開機前，先確認有無炸件、電容鼓包現(xiàn)象，如有應(yīng)先更換并把相關(guān)的器件全部都測量一遍。建議更換所有損壞器件后試機時，zui好把原機保險絲除掉; 接上一個220V/100W的燈泡，這樣可以有效防止再次炸件。</p><p style="text-indent:25px">PFC就是功率因數(shù)校正的意思，主要用來表征電子產(chǎn)品對電能的利用效率。功率因數(shù)越高，說明電能的利用效率越高。PC電源采用傳統(tǒng)的橋式整流、電容濾波電路會使AC輸入電流產(chǎn)生嚴重的波形畸變，向電網(wǎng)注入大量的高次諧波，因此網(wǎng)側(cè)的功率因數(shù)不高，*有0.6左右，并對電網(wǎng)和其它電氣設(shè)備造成嚴重諧波污染與干擾。早在80年代初，人們已對這類裝置產(chǎn)生的高次諧波電流所造成的危害引起了關(guān)注。1982年，國際電工委員會制訂了IEC55－2限制高次諧波的規(guī)范（后來的修訂規(guī)范是IEC1000－3－2），促使眾多的電力電子技術(shù)工作者開始了對諧波濾波和功率因數(shù)校正（PFC）技術(shù)的研究。電子電源產(chǎn)品中引入PFC電路，就可以較大提高對電能的利用效率?！肮β室驍?shù)校正”，通俗的話說，就是提高有用功的比重。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="蘇州被動式PFC電源批發(fā)廠家,PFC電源" src="https://tyunfile.71360.com/WaterMark/UploadFile/baoyixinneng/637406038655679952/7203321.png"></div><p style="text-indent:25px">主動PFC電路由高頻電感、開關(guān)管、電容以及控制IC等元件構(gòu)成。電路的特點是構(gòu)造復(fù)雜，但優(yōu)點很多：功率因數(shù)高達0.99、低損耗和高可靠、輸入電壓可以從90V到270V（寬幅輸入）等，由于輸出DC電壓紋波很小，因此采用主動式PFC的電源不需要采用很大容量的濾波電容。被動式PFC通常為一塊體積較大的電感，其內(nèi)部由多塊硅鋼片外部纏繞銅線而組成。功率因數(shù)不是很高，只能達到0.7~0.8，因此其效率也比較低，發(fā)熱量也比較大。被動式PFC也并非一無是處，其結(jié)構(gòu)簡單，穩(wěn)定性上表現(xiàn)好，比較適合中低端電源。希望你根本個人的實際情況選擇！電感補償式的被動式PFC有結(jié)構(gòu)簡單、成本低廉的優(yōu)勢。合肥PFC電腦電源批發(fā)</p><p style="text-indent:25px">普通的開關(guān)穩(wěn)壓電源需要220V整流供電，而PFC穩(wěn)壓開關(guān)電源是由B+PFC供電。蘇州被動式PFC電源批發(fā)廠家</p><p style="text-indent:25px">有源PFC的基本原理是在開關(guān)電源的整流電路和濾波電容之間增加一個DC-DC的斬波電路(附加開關(guān)電源)，對于供電線路來說該整流電路輸出沒有直接接濾波電容，所以其對于供電線路來說呈現(xiàn)的是純阻性的負載，其電壓和電流波形同相、相位相同。斬波電路的工作也類似于一個開關(guān)電源。所以說有源PFC開關(guān)電源就是一個雙開關(guān)電源的開關(guān)電源電路，它是由斬波器(我們以后稱它為：“PFC開關(guān)電源”)和穩(wěn)壓開關(guān)電源(我們以后稱它為：“PWM開關(guān)電源”)組成的。有源PFC電路的原理：有源PFC則是有很好的效果，基本上可以完全的消除電流波形的畸變，而且電壓和電流的相位可以控制保持一致，它可以基本上完全解決了功率因數(shù)、電磁兼容、電磁干擾的問題，但是電路非常的復(fù)雜，其基本思路是在220V整流橋堆后去掉濾波電容(以消除因電容的充電造成的電流波形畸變及相位的變化)，去掉濾波電容后由一個“斬波”電路把脈動的直流變成高頻(約100K)交流再經(jīng)過整流濾波后，其直流電壓再向常規(guī)的PWM開關(guān)穩(wěn)壓電源供電，其過程是; AC→DC→AC→DC。蘇州被動式PFC電源批發(fā)廠家</p><p style="text-indent:25px">深圳市保益新能電氣有限公司主營品牌有保益，發(fā)展規(guī)模團隊不斷壯大，該公司生產(chǎn)型的公司。保益新能是一家有限責(zé)任公司企業(yè)，一直“以人為本，服務(wù)于社會”的經(jīng)營理念;“誠守信譽，持續(xù)發(fā)展”的質(zhì)量方針。公司業(yè)務(wù)涵蓋UPS/EPS電源，雙向逆變器，安防電源，激光儲能電源，價格合理，品質(zhì)有保證，深受廣大客戶的歡迎。保益新能自成立以來，一直堅持走正規(guī)化、專業(yè)化路線，得到了廣大客戶及社會各界的普遍認可與大力支持。</p></p><br /><p>文章來源地址: http://m.cdcfah.com/cp/1963526.html</p></div></div></div></div></div><div id="lkm7hqx" 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