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class="bigimg"><div><p class="pic"><img src="https://tyunfile.71360.com/WaterMark/UploadFile/baoyixinneng/637406041284644784/1270972.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div><div id="onkmoqc" class="smallimg"><div><p class="pic"><img src="https://tyunfile.71360.com/WaterMark/UploadFile/baoyixinneng/637406041284644784/1270972.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div></div><div id="xhzgszl" 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>北京主動(dòng)式電源pfc廠家聯(lián)系方式,PFC電源</p><p><span>***更新：</span>2020-12-12 09:16:52</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="iczbizq" 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="nhu7yax" class="page-proshow02"><p class="title">詳細(xì)說(shuō)明</p><div id="mbtqcjl" class="box"><p><p style="text-indent:25px">如何快速維修pfc電路：1、什么是PFC電路呢？ PFC電路說(shuō)白了就是把橋堆整流后的+300V電壓升高到+375V---400V。這也是液晶電視的電源與CRT電視的電源不同之處的一點(diǎn)，不同之處的第二點(diǎn)就是次級(jí)電壓比CRT的低，其它的地方與普通的開(kāi)關(guān)電源原理相同，都一樣。測(cè)得大濾波電容330U/450V兩端電壓為+375V---400V，則表明功率因數(shù)校正電路工作正常; 如果測(cè)得電容兩端電壓為+300V，說(shuō)明PFC電路未工作，主查PFC振蕩集成電路。2、檢修液晶電源時(shí); 首PFC振蕩集成電路。先確認(rèn)保險(xiǎn)管狀態(tài)，保險(xiǎn)管完好，通常PFC校正電路中的開(kāi)關(guān)管等沒(méi)有失效。再測(cè)量大電解電容對(duì)地是否存在短路，有幾十千歐以上充電電阻，表明電源沒(méi)有擊穿。3、如果保險(xiǎn)管損壞，一個(gè)要檢查PFC校正電路開(kāi)關(guān)管，北京主動(dòng)式電源pfc廠家聯(lián)系方式，北京主動(dòng)式電源pfc廠家聯(lián)系方式，第二個(gè)要檢查副電5 N“、40英寸以下的一般輸出+5V、+12V、+24V三組電壓; 40英寸以上的一般輸出源IC。+5V、+12V、+18V、+24 V四組電壓。其中+5 V為待機(jī)電壓，+12V供數(shù)字板，北京主動(dòng)式電源pfc廠家聯(lián)系方式，+18V供伴音，+24 V供背光板。在實(shí)踐維修中，只要各組電壓一樣、功率一樣的電源板都可以代換。主動(dòng)PFC為了搞定電磁干擾，EMI濾波電路要加強(qiáng)，電路更加復(fù)雜。北京主動(dòng)式電源pfc廠家聯(lián)系方式</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="北京主動(dòng)式電源pfc廠家聯(lián)系方式,PFC電源" src="https://tyunfile.71360.com/WaterMark/UploadFile/baoyixinneng/637406041284644784/1270972.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)”“電感補(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?！半姼醒a(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。主動(dòng)式PFC：而主動(dòng)式PFC則由電感電容及電子元器件組成，體積小、通過(guò)**IC去調(diào)整電流的波形，對(duì)電流電壓間的相位差進(jìn)行補(bǔ)償。主動(dòng)式PFC可以達(dá)到較高的功率因數(shù)──通常可達(dá)98%以上，但成本也相對(duì)較高。此外，主動(dòng)式PFC還可用作輔助電源，因此在使用主動(dòng)式PFC電路中，往往不需要待機(jī)變壓器，而且主動(dòng)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。成都PFC電腦電源價(jià)格有些電源在待機(jī)時(shí)發(fā)出高頻噪音，也是因?yàn)橹鲃?dòng)PFC。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="北京主動(dòng)式電源pfc廠家聯(lián)系方式,PFC電源" src="https://tyunfile.71360.com/WaterMark/UploadFile/baoyixinneng/637406038609127250/5992744.png"></div><p style="text-indent:25px">pfc對(duì)電源的重要性：功率因數(shù)（PF）是指，實(shí)際功率（有效功率）與視在功率（表觀功率）的比率（kW/kVA），而我們都知道，功率P等于電壓與電流的乘積（P=V×I）。另外，在電路中會(huì)存在著zui基本的兩種電路負(fù)載，一種為“電阻（由電源中各種電阻構(gòu)成的電路負(fù)載）”，另外一種為“電抗（由電源中電感線圈和電容構(gòu)成的電路負(fù)載）”。如果整個(gè)電路都是線性負(fù)載（電路阻抗為恒定常數(shù)的負(fù)載），那么電源電壓和電流都將會(huì)呈現(xiàn)為正弦曲線，并且相位相同。而如果在這個(gè)純電阻電路中，那么電壓和電流都會(huì)在同一時(shí)刻逆轉(zhuǎn)極性，那么也就是說(shuō)，在每一時(shí)刻，電壓與電流的乘積都為“正”。也就是說(shuō)，在電路中，沒(méi)有“反方向（負(fù)極方向）”的能量移動(dòng)，而此時(shí)所產(chǎn)生負(fù)載功率才被稱為“實(shí)際功率”。</p><p style="text-indent:25px">PFC的全稱是Power Factor Corrector，意思是功率因數(shù)校正器，它可以在交流轉(zhuǎn)換為直流時(shí)提高電源對(duì)市電的利用率，但不能減小轉(zhuǎn)換過(guò)程的電能損耗，也沒(méi)有節(jié)約電能的功能。主動(dòng)式PFC電源能減少電源對(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。PFC分為主動(dòng)式（有源）和被動(dòng)式（無(wú)源）兩種，它們是衡量電源檔次高低的一個(gè)重要因素。一般來(lái)說(shuō)，功率在250W～300W的電源多采用被動(dòng)式PFC，而主動(dòng)式PFC則常用于400W及以上的中高級(jí)電源。就性能而言，主動(dòng)式PFC擁有更高的功率因數(shù)（高達(dá)99%），配合好的電路設(shè)計(jì)，能適應(yīng)更高的電壓范圍。你可以通過(guò)電源散熱孔查看該產(chǎn)品采用了何種PFC電路：被動(dòng)式PFC通常為一塊體積較大的電感，由多塊硅鋼片外部纏繞銅線而成；而主動(dòng)式PFC則由電感線圈配合IC控制芯片組成。被動(dòng)式PFC一般分“電感補(bǔ)償式”和“填谷電路式（Valley Fill Circuit）”。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="北京主動(dòng)式電源pfc廠家聯(lián)系方式,PFC電源" src="https://tyunfile.71360.com/WaterMark/UploadFile/baoyixinneng/637406041733853787/2368324.png"></div><p style="text-indent:25px">開(kāi)關(guān)電源中的pfc是什么意思？PFC就是功率因數(shù)校正，由于開(kāi)關(guān)電源不是純電阻負(fù)載，屬于容性負(fù)載，大量的開(kāi)關(guān)電源同時(shí)使用會(huì)干擾電網(wǎng)，使電網(wǎng)不平衡。一般開(kāi)關(guān)電源的功率因數(shù)PF為0.6左右。理想的純電阻負(fù)載功率因數(shù)PF為1，開(kāi)關(guān)電源經(jīng)功率因數(shù)PF校正后可以達(dá)到0.8以上！開(kāi)關(guān)電源功率因素低，會(huì)影響電網(wǎng)的使用效率，比如：10KW的電力變壓器，如果使用功率因數(shù)PF為0.6，功率1KW的開(kāi)關(guān)電源，只能同時(shí)帶動(dòng)6臺(tái)這樣的開(kāi)關(guān)電源，如果使用功率因數(shù)PF為0.9，功率1KW的開(kāi)關(guān)電源，可以同時(shí)帶動(dòng)9臺(tái)這樣的開(kāi)關(guān)電源！大量使用功率因素低的開(kāi)關(guān)電源，會(huì)將許多功率消耗在電線上，使電線發(fā)熱。還會(huì)使電網(wǎng)的正弦波失真變形，影響其它電器的正常使用。一般大功率開(kāi)關(guān)電源，都要求功率因數(shù)PF在0.8以上！對(duì)于手機(jī)充電器這樣的小功率開(kāi)關(guān)電源，沒(méi)有要求。對(duì)于LED電源，有些對(duì)功率因數(shù)也有要求。目前電路負(fù)載基本上可以分為兩種模式，其一為電阻型負(fù)載，另外一種則是電抗型負(fù)載。合肥主動(dòng)式PFC電源批發(fā)廠家</p><p style="text-indent:25px">“填谷電路式”屬于一種新型無(wú)源功率因數(shù)校正電路。北京主動(dòng)式電源pfc廠家聯(lián)系方式</p><p style="text-indent:25px">什么是被動(dòng)式PFC？被動(dòng)式PFC曾經(jīng)是PC電源上的主流，現(xiàn)在雖然已經(jīng)退出主流市場(chǎng)，但由于相對(duì)低廉的成本，因此其仍然活躍在額定功率400W以下的入門(mén)級(jí)電源產(chǎn)品中。被動(dòng)式PFC電源的PF值大多在0.7到0.8左右，但甚少能有超過(guò)0.8的水平，畢竟要在被動(dòng)式PFC電源上做到PF值0.8以上，從成本來(lái)說(shuō)足以做主動(dòng)式PFC電源，后者的PF值可以輕松達(dá)到0.9的水平。常見(jiàn)于PC電源中的被動(dòng)式PFC是電感補(bǔ)償式，其通過(guò)減少交流輸入的基波電流與電壓之間相位差來(lái)提高功率因數(shù)，特點(diǎn)是在高壓濾波電容附近有一個(gè)PFC電感，這個(gè)電感由多塊硅鋼片外部纏繞銅線而成，體積大、重量高，為了保證其安裝穩(wěn)固，現(xiàn)在不少被動(dòng)式PFC電源會(huì)把PFC電感固定在外殼，再通過(guò)導(dǎo)線連接到主PCB上。北京主動(dòng)式電源pfc廠家聯(lián)系方式</p><p style="text-indent:25px">深圳市保益新能電氣有限公司是一家電氣設(shè)備、電源產(chǎn)品、逆變器，UPS，通訊電源，儲(chǔ)能電源產(chǎn)品、工業(yè)電源、電池充放電電源設(shè)備、電池充放電管理系統(tǒng)設(shè)備、數(shù)字電源、無(wú)功補(bǔ)償器或者功率矯正器、數(shù)字控制技術(shù)軟件、工業(yè)控制軟件、電力計(jì)量產(chǎn)品、新能源設(shè)備、太陽(yáng)能、并網(wǎng)逆變器、離網(wǎng)逆變器、匯流箱、控制器，通訊設(shè)備產(chǎn)品、節(jié)能電子產(chǎn)品、回饋式電源負(fù)載的研發(fā)、銷售及相關(guān)信息咨詢。的公司，是一家集研發(fā)、設(shè)計(jì)、生產(chǎn)和銷售為一體的專業(yè)化公司。保益新能作為電氣設(shè)備、電源產(chǎn)品、逆變器，UPS，通訊電源，儲(chǔ)能電源產(chǎn)品、工業(yè)電源、電池充放電電源設(shè)備、電池充放電管理系統(tǒng)設(shè)備、數(shù)字電源、無(wú)功補(bǔ)償器或者功率矯正器、數(shù)字控制技術(shù)軟件、工業(yè)控制軟件、電力計(jì)量產(chǎn)品、新能源設(shè)備、太陽(yáng)能、并網(wǎng)逆變器、離網(wǎng)逆變器、匯流箱、控制器，通訊設(shè)備產(chǎn)品、節(jié)能電子產(chǎn)品、回饋式電源負(fù)載的研發(fā)、銷售及相關(guān)信息咨詢。的企業(yè)之一，為客戶提供良好的UPS/EPS電源，雙向逆變器，安防電源，激光儲(chǔ)能電源。保益新能始終以本分踏實(shí)的精神和必勝的信念，影響并帶動(dòng)團(tuán)隊(duì)取得成功。保益新能始終關(guān)注電工電氣行業(yè)。滿足市場(chǎng)需求，提高產(chǎn)品價(jià)值，是我們前行的力量。</p></p><br /><p>文章來(lái)源地址: http://m.cdcfah.com/cp/2374295.html</p></div></div></div></div></div><div id="cgdfwdf" 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