南京主動式PFC電源多少錢歡迎咨詢深圳市保益新能電氣供應(yīng)-b2b網(wǎng)站_b2b電子商務(wù)平臺【買產(chǎn)品】-上?？谄蚴称酚邢薰?/title><meta name="description" content="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，南京主動式PFC電源多少錢、+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"><meta name="keywords" content="南京主動式PFC電源多少錢,PFC電源"><link rel="canonical" href="http://m.cdcfah.com/"/><meta name="applicable-device" content="pc"><link rel="shortcut icon" href="/static/new_net_01/images/favicon.ico"><link rel="stylesheet" href="/static/new_net_01/css/slick.css" /><link rel="stylesheet" href="/static/new_net_01/css/addnew.css"><link rel="stylesheet" href="/static/new_net_01/css/sidenav.css"><link rel="stylesheet" href="/static/new_net_01/css/style.css" /><link rel="stylesheet" href="/static/new_net_01/css/tab.css"><link rel="stylesheet" href="/static/new_net_01/css/404.css"> <meta name="baidu-site-verification" content="OBVzrC9aaQ" /> <meta http-equiv="Cache-Control" content="no-transform" /> <meta 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src="https://tyunfile.71360.com/WaterMark/UploadFile/baoyixinneng/637406041733853787/2368324.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div><div id="jf8mvli" class="smallimg"><div><p class="pic"><img src="https://tyunfile.71360.com/WaterMark/UploadFile/baoyixinneng/637406041733853787/2368324.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div></div><div id="kj97juy" 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>南京主動式PFC電源多少錢,PFC電源</p><p><span>***更新：</span>2020-12-04 08:17:52</p><p><span id="click" >瀏覽次數(shù)：0次</span></p><a rel="nofollow" class="button">聯(lián)系我們</a></div></div><div id="rcqnk8r" 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="fl3frsp" class="page-proshow02"><p class="title">詳細說明</p><div id="ncnyck8" class="box"><p><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，南京主動式PFC電源多少錢、+ 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，南京主動式PFC電源多少錢，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，南京主動式PFC電源多少錢、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。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。南京主動式PFC電源多少錢</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="南京主動式PFC電源多少錢,PFC電源" src="https://tyunfile.71360.com/WaterMark/UploadFile/baoyixinneng/637406041733853787/2368324.png"></div><p style="text-indent:25px">如何快速維修pfc電路：4、電源板可以從電視上摘下**維修，維修時只需要把開關(guān)機控制電路三極管C、E短接（或?qū)⒁恢?.5K左右的電阻與副電源的+5V輸出端相連》，整機就處于開機狀態(tài)，各路電壓均有輸出。在部分液晶采電的開關(guān)電源中，只有+ 12V或+24V輸出端帶有一定功率的負載，主開關(guān)電源才進行正常的工作狀態(tài)。所以在+24V輸出端上你可以接一只電動自行車的36 V燈泡作假負載（或在+ 12V輸出端接一只摩托車燈泡作假負載）即可。5、液晶電源通電后，副電源先工作，輸出+5V電壓給數(shù)字板上的CPU，此時整機處于待機狀態(tài)。當(dāng)按”待機“鍵后，CPU輸出開機電平，PFC 電路先工作，將+300V脈動直流電壓轉(zhuǎn)換成正常的直流電壓（+380V）后，這時主開關(guān)電源的脈寬振蕩器才開始工作; 接著主開關(guān)變壓器次級輸出+ 12V、+24V電壓，整機進入正常工作狀態(tài)。深圳主動式電源pfc批發(fā)廠家電感補償式”的功率因數(shù)只能達到0.7～0.8，它一般在高壓濾波電容附近。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="南京主動式PFC電源多少錢,PFC電源" src="https://tyunfile.71360.com/WaterMark/UploadFile/baoyixinneng/637406038685836223/2985647.png"></div><p style="text-indent:25px">主動式PFC與被動式PFC電源的不同：在早些年主動式PFC電源剛剛步入主流的時候，商家們一度大肆宣傳“主動式就是比被動式好”，現(xiàn)在主動式PFC電源已經(jīng)成為主流，雖然不再需要像當(dāng)年那樣瘋狂地推廣，但是我們?nèi)匀豢梢栽诓簧匐娫串a(chǎn)品的包裝上看到強調(diào)主動式PFC的字眼，可見這個觀點早已深入人心。那么主動式PFC相比被動式PFC好在哪里呢？現(xiàn)在我們就來一起探討一下被動式PFC與主動式PFC之間差異，看看為什么主動式PFC電源能夠成為現(xiàn)在的主流。現(xiàn)在主動式PFC已經(jīng)成為主流和高級電源的標配。</p><p style="text-indent:25px">開關(guān)電源中的pfc是什么意思？PFC的意思是功率因數(shù)校正。PFC意思是功率因數(shù)校正，功率因數(shù)指的是有效功率與總耗電量之間的關(guān)系，也就是有效功率除以總耗電量的比值?；旧瞎β室驍?shù)可以衡量電力被有效利用的程度，當(dāng)功率因數(shù)值越大，表示其電力利用率越高。PFC是電腦電源中的一個非常重要的參數(shù)，等于“視在功率乘以功率因素”，即：功率因素=實際功率/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。原理：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)過整流才能被后級PWM開關(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償問題，也解決電磁兼容(EMC)和電磁干擾(EMI)問題。主動式PFC通過升高輸入電壓來減少電流在流向下級電路中的電能損耗。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="南京主動式PFC電源多少錢,PFC電源" src="https://tyunfile.71360.com/WaterMark/UploadFile/baoyixinneng/637406041410054963/9568029.png"></div><p style="text-indent:25px">開關(guān)電源中的pfc是什么意思？PFC的英文全稱為“Power Factor Correction”，意思是“功率因數(shù)校正”，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，也就是有效功率除以總耗電量（視在功率）的比值。基本上功率因數(shù)可以衡量電力被有效利用的程度，當(dāng)功率因數(shù)值越大，表示其電力利用率越高。功率因數(shù)是用來衡量用電設(shè)備用電效率的參數(shù)，低功率因數(shù)表示低電力效能。為了提高用電設(shè)備功率因數(shù)的技術(shù)就稱為功率因數(shù)校正。主動式PFC則由電感電容及電子元器件組成，體積小、通過**IC去調(diào)整電流的波形，對電流電壓間的相位差進行補償。主動式PFC可以達到較高的功率因數(shù)──通?？蛇_98%以上，但成本也相對較高。此外，主動式PFC還可用作輔助電源，因此在使用主動式PFC電路中，往往不需要待機變壓器，而且主動式PFC輸出直流電壓的紋波很小，這種電源不必采用很大容量的濾波電容。主動式PFC配合好的電路設(shè)計，能適應(yīng)更高的電壓范圍。上海PFC電腦電源廠家推薦</p><p style="text-indent:25px">主動式PFC就是一個有源的升壓電路。南京主動式PFC電源多少錢</p><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！南京主動式PFC電源多少錢</p><p style="text-indent:25px">深圳市保益新能電氣有限公司主要經(jīng)營范圍是電工電氣，擁有一支專業(yè)技術(shù)團隊和良好的市場口碑。保益新能致力于為客戶提供良好的UPS/EPS電源，雙向逆變器，安防電源，激光儲能電源，一切以用戶需求為中心，深受廣大客戶的歡迎。公司注重以質(zhì)量為中心，以服務(wù)為理念，秉持誠信為本的理念，打造電工電氣良好品牌。保益新能秉承“客戶為尊、服務(wù)為榮、創(chuàng)意為先、技術(shù)為實”的經(jīng)營理念，全力打造公司的重點競爭力。</p></p><br /><p>文章來源地址: http://m.cdcfah.com/cp/2262844.html</p></div></div></div></div></div><div id="3vn3xma" class="page-right twoColRt"><div id="wjjqnc3" class="box01 margin10 clearfix"><h3><a href="http://m.cdcfah.com/cp/">猜你喜歡</a></h3><div id="z2xmtk4" class="recomPic likePro"><a href="http://m.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配件哪家強信息推薦自業(yè)物資供應(yīng)</p></a></div><div id="sbj7kpt" class="recomPic likePro"><a href="http://m.cdcfah.com/cp/846569.html"><div><img 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