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clearfix"><div id="k2bxcjl" class="twoCol"><div id="mg2a3gi" class="page-proshow clearfix"><p class="current"> 當(dāng)前位置:<a href="http://www.cdcfah.com/">首頁(yè)?<a href="http://www.cdcfah.com/cp/">產(chǎn)品供應(yīng)</a>?<a href="http://www.cdcfah.com/cp/first-_nengyuan/">能源</a>?<a href="http://www.cdcfah.com/cp/second-nengyuan_pdsdsb/">配電輸電設(shè)備</a>?<a href="http://www.cdcfah.com/cp/third-pdsdsb_qtpdsdsb/">其他配電輸電設(shè)備</a>?深圳主動(dòng)式電源pfc批發(fā)廠家創(chuàng)新服務(wù) 深圳市保益新能電氣供應(yīng)</p><div id="72lsz8v" class="leftbox clearfix"><h1>深圳主動(dòng)式電源pfc批發(fā)廠家創(chuàng)新服務(wù) 深圳市保益新能電氣供應(yīng)</h1><div id="7htvnx8" class="proBig"><div id="tb9vkbd" class="bigimg"><div><p class="pic"><img src="https://tyunfile.71360.com/WaterMark/UploadFile/baoyixinneng/637406038655679952/7203321.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div><div id="3gda7bd" class="smallimg"><div><p class="pic"><img src="https://tyunfile.71360.com/WaterMark/UploadFile/baoyixinneng/637406038655679952/7203321.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div></div><div id="lfuwt8y" class="content"><p><span>需求數(shù)量：</span>0</p><p><span>價(jià)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>深圳主動(dòng)式電源pfc批發(fā)廠家,PFC電源</p><p><span>***更新：</span>2021-01-14 01:14:00</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="n88lsum" 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(jī): </span>0755-21070344</p><p><span>地址: </span>大浪街道浪口社區(qū)華榮路496號(hào)德泰工業(yè)區(qū)1號(hào)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="lzoqxzg" class="page-proshow02"><p class="title">詳細(xì)說(shuō)明</p><div id="2yfx7da" class="box"><p><p style="text-indent:25px">PFC電源與開(kāi)關(guān)電源的區(qū)別是什么：在PFC開(kāi)關(guān)電源當(dāng)中，開(kāi)關(guān)穩(wěn)壓電源是非常重要的一個(gè)組成部分。PFC當(dāng)中的開(kāi)關(guān)穩(wěn)壓電源功能和普通的開(kāi)關(guān)穩(wěn)壓電源的區(qū)別并不巨大，只是在供電上有所區(qū)別。普通的開(kāi)關(guān)穩(wěn)壓電源需要220V整流供電，深圳主動(dòng)式電源pfc批發(fā)廠家，而PFC穩(wěn)壓開(kāi)關(guān)電源是由B+PFC供電。整流以后不加濾波電容器，把未經(jīng)濾波的脈動(dòng)正半周電壓作為斬波器的供電源，由于斬波器的一連串的做“開(kāi)關(guān)”工作脈動(dòng)的正電壓被“斬”成電流波形，其波形的特點(diǎn)是：1、電流波形是斷續(xù)的，其包絡(luò)線和電壓波形相同，并且包絡(luò)線和電壓波形相位同相。2、由于斬波的作用，半波脈動(dòng)的直流電變成高頻（由斬波頻率決定，約100KHz）“交流”電，該高頻“交流”電要再次經(jīng)過(guò)整流才能被后級(jí)PWM開(kāi)關(guān)穩(wěn)壓電源使用。3、從外供電總的看該用電系統(tǒng)做到了交流電壓和交流電流同相并且電壓波形和電流波形均符合正弦波形，既解決了功率因素補(bǔ)償問(wèn)題，深圳主動(dòng)式電源pfc批發(fā)廠家，深圳主動(dòng)式電源pfc批發(fā)廠家，也解決電磁兼容（EMC）和電磁干擾（EMI）問(wèn)題。PFC還能減少電源對(duì)市電電網(wǎng)的干擾，尤其是避免它在突然啟動(dòng)時(shí)對(duì)其他電器的影響。深圳主動(dòng)式電源pfc批發(fā)廠家</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="深圳主動(dòng)式電源pfc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">如何快速維修pfc電路：6、保護(hù)電路，在液晶采電開(kāi)關(guān)電源中，除具有常見(jiàn)的尖峰吸收保護(hù)電路外，還設(shè)在+24V、+ 12V和+5V電壓的過(guò)壓、過(guò)載保護(hù)電路，其保護(hù)電路多采用四運(yùn)算放大器LM324、四電壓比較器LM339、雙電壓比較器LM393或雙運(yùn)算放大器LM358。過(guò)流過(guò)壓保護(hù)電路，在維修時(shí)可脫開(kāi)不用，如果電壓恢復(fù)正常，說(shuō)明保護(hù)電路引起，這時(shí)要分步斷開(kāi)是哪路起作用。然后再進(jìn)行維修。7、開(kāi)機(jī)前，先確認(rèn)有無(wú)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(cè)量一遍。建議更換所有損壞器件后試機(jī)時(shí)，zui好把原機(jī)保險(xiǎn)絲除掉; 接上一個(gè)220V/100W的燈泡，這樣可以有效防止再次炸件。合肥PFC電源批發(fā)功率因數(shù)指的是有效功率與總耗電量（視在功率）之間的關(guān)系。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="深圳主動(dòng)式電源pfc批發(fā)廠家,PFC電源" src="https://tyunfile.71360.com/WaterMark/UploadFile/baoyixinneng/637406041733853787/2368324.png"></div><p style="text-indent:25px">被動(dòng)式PFC：被動(dòng)式PFC一般分“電感補(bǔ)償式”和“填谷電路式（Valley Fill Circuit）”?！半姼醒a(bǔ)償式”是使交流輸入的基波電流與電壓之間相位差減小來(lái)提高功率因數(shù)，“電感補(bǔ)償式”包括靜音式和非靜音式。“電感補(bǔ)償式”的功率因數(shù)只能達(dá)到0.7～0.8，它一般在高壓濾波電容附近?！疤罟入娐肥健睂儆谝环N新型無(wú)源功率因數(shù)校正電路，其特點(diǎn)是利用整流橋后面的填谷電路來(lái)大幅度增加整流管的導(dǎo)通角，通過(guò)填平谷點(diǎn)，使輸入電流從尖峰脈沖變?yōu)榻咏谡也ǖ牟ㄐ?，將功率因?shù)提高到0.9左右，明顯降低總諧波失真。與傳統(tǒng)的電感式無(wú)源功率因數(shù)校正電路相比，其優(yōu)點(diǎn)是電路簡(jiǎn)單，功率因數(shù)補(bǔ)償效果明顯，并且在輸入電路中不需要使用體積大重量沉的大電感器。</p><p style="text-indent:25px">PFC就是功率因數(shù)校正的意思，主要用來(lái)表征電子產(chǎn)品對(duì)電能的利用效率。功率因數(shù)越高，說(shuō)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(huì)使AC輸入電流產(chǎn)生嚴(yán)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(duì)電網(wǎng)和其它電氣設(shè)備造成嚴(yán)重諧波污染與干擾。早在80年代初，人們已對(duì)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(guó)際電工委員會(huì)制訂了IEC55－2限制高次諧波的規(guī)范（后來(lái)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(kāi)始了對(duì)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(duì)電能的利用效率。PFC分為主動(dòng)式（有源）和被動(dòng)式（無(wú)源）兩種。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="深圳主動(dòng)式電源pfc批發(fā)廠家,PFC電源" src="https://tyunfile.71360.com/WaterMark/UploadFile/baoyixinneng/637406038635709246/2295771.png"></div><p style="text-indent:25px">目前電腦用的電源PFC有兩種，一是被動(dòng)式PFC，也稱無(wú)源PFC；一是主動(dòng)式PFC，也稱有源式PFC。1、主動(dòng)式PFC主要由高頻電感、開(kāi)關(guān)管、電容以及控制IC等元件構(gòu)成，可簡(jiǎn)單的歸納為升壓型開(kāi)關(guān)電源電路，這種電路的特點(diǎn)是構(gòu)造復(fù)雜，但優(yōu)點(diǎn)很多：功率因數(shù)高達(dá)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(dòng)式PFC的電源不需要采用很大容量的濾波電容。2、被動(dòng)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(bǔ)償方法通過(guò)使交流輸入的基波電流與電壓之間相位差減小來(lái)提高功率因數(shù)，被動(dòng)式PFC的功率因數(shù)不是很高，只能達(dá)到0.7~0.8，因此其效率也比較低，發(fā)熱量也比較大。被動(dòng)式PFC也并非一無(wú)是處，其結(jié)構(gòu)簡(jiǎn)單，穩(wěn)定性上表現(xiàn)好，比較適合中低端電源。3、主動(dòng)式PFC設(shè)計(jì)復(fù)雜，成本較高；主動(dòng)式PFC比被動(dòng)式PFC性能要好，更加節(jié)能；主動(dòng)式PFC的功率因數(shù)更高；被動(dòng)式PFC電源成本低。正因如此，主動(dòng)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(gè)被動(dòng)式PFC的電源使用沒(méi)問(wèn)題。PFC的意思是功率因數(shù)校正器。深圳主動(dòng)式電源pfc批發(fā)廠家</p><p style="text-indent:25px">PFC可以在交流轉(zhuǎn)換為直流時(shí)提高電源對(duì)市電的利用率。深圳主動(dòng)式電源pfc批發(fā)廠家</p><p style="text-indent:25px">PFC是電腦電源中的一bai個(gè)非常重要的參數(shù)du,全稱是電腦功率因素,簡(jiǎn)稱為PFC,等于“視在功zhi率乘以功率因dao素”,即:功率因素=實(shí)際功率/視在功率。?? ?功率因素:功率因數(shù)表征著電腦電源輸出有功功率的能力。?? ?功率是能量的傳輸率的度量,在直流電路中它是電壓V和電流A和乘積。在交流系統(tǒng)里則要復(fù)雜些:即有部分交流電流在負(fù)載里循環(huán)不傳輸電能,它稱為電抗電流或諧波電流,它使視在功率( 電壓Volt乘電流Amps)大于實(shí)際功率。視在功率和實(shí)際功率的不等引出了功率因素,功率因素等于實(shí)際功率與視在功率的比值。深圳主動(dòng)式電源pfc批發(fā)廠家</p></p><br /><p>文章來(lái)源地址: http://www.cdcfah.com/cp/2833323.html</p></div></div></div></div></div><div id="ys7tvx3" class="page-right twoColRt"><div id="37xegdf" class="box01 margin10 clearfix"><h3><a href="http://www.cdcfah.com/cp/">猜你喜歡</a></h3><div id="hv9pb3g" class="recomPic likePro"><a href="http://www.cdcfah.com/cp/814588.html"><div><img src="http://tyunfile.71360.com/UpLoadFile/2019/11/1/14/637082168864691056_lgpj_5374157.jpg" alt="福建ZF配件哪家強(qiáng) 信息推薦自業(yè)物資供應(yīng)" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></div><p>福建ZF配件哪家強(qiáng) 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