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clearfix"><div id="zys93nc" class="twoCol"><div id="pzrwxub" class="page-proshow clearfix"><p class="current"> 當(dāng)前位置:<a href="http://m.cdcfah.com/">首頁?<a href="http://m.cdcfah.com/cp/">產(chǎn)品供應(yīng)</a>?<a href="http://m.cdcfah.com/cp/first-_nengyuan/">能源</a>?<a href="http://m.cdcfah.com/cp/second-nengyuan_pdsdsb/">配電輸電設(shè)備</a>?<a href="http://m.cdcfah.com/cp/third-pdsdsb_qtpdsdsb/">其他配電輸電設(shè)備</a>?PFC電源哪家好創(chuàng)新服務(wù) 深圳市保益新能電氣供應(yīng)</p><div id="8y38f8k" class="leftbox clearfix"><h1>PFC電源哪家好創(chuàng)新服務(wù) 深圳市保益新能電氣供應(yīng)</h1><div id="a2fmovx" class="proBig"><div id="jbydk8v" class="bigimg"><div><p class="pic"><img src="https://tyunfile.71360.com/WaterMark/UploadFile/baoyixinneng/637406038577291288/3249165.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div><div id="7nh977w" class="smallimg"><div><p class="pic"><img src="https://tyunfile.71360.com/WaterMark/UploadFile/baoyixinneng/637406038577291288/3249165.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div></div><div id="x8m3nr7" 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>PFC電源哪家好,PFC電源</p><p><span>***更新：</span>2021-01-10 09:13:50</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="njaul7l" 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="ncpj8gb" class="page-proshow02"><p class="title">詳細(xì)說明</p><div id="b8gdfxh" class="box"><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)換為直流時提高電源對市電的利用率，但不能減小轉(zhuǎn)換過程的電能損耗，也沒有節(jié)約電能的功能。主動式PFC電源能減少電源對市電電網(wǎng)的干擾，尤其是避免它在突然啟動時對其他電器的影響。PFC分為主動式（有源）和被動式（無源）兩種，它們是衡量電源檔次高低的一個重要因素。一般來說，功率在250W～300W的電源多采用被動式PFC，而主動式PFC則常用于400W及以上的中高級電源，PFC電源哪家好，PFC電源哪家好。就性能而言，主動式PFC擁有更高的功率因數(shù)（高達(dá)99%），配合好的電路設(shè)計，PFC電源哪家好，能適應(yīng)更高的電壓范圍。你可以通過電源散熱孔查看該產(chǎn)品采用了何種PFC電路：被動式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；而主動式PFC則由電感線圈配合IC控制芯片組成。被動式PFC一般分“電感補償式”和“填谷電路式（Valley Fill Circuit）”。PFC電源哪家好</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="PFC電源哪家好,PFC電源" src="https://tyunfile.71360.com/WaterMark/UploadFile/baoyixinneng/637406038577291288/3249165.png"></div><p style="text-indent:25px">PFC是電腦電源中的一個非常重要的參數(shù)，全稱是電腦功率因素校正，簡稱為PFC。計算機(jī)電源負(fù)責(zé)把dao交流電（AC）轉(zhuǎn)成直流電（DC）為主機(jī)提供全部電力，因此其能源轉(zhuǎn)換效率高低是一項非常重要的節(jié)能省電指標(biāo)。電源的能源轉(zhuǎn)換效率跟標(biāo)稱功率大小并無必然關(guān)系，它是電源在處理AC至DC變壓過程中，能量的剩余比例，而此效率基本取決于電源內(nèi)部的功率因素校正電路（PFC，Power Factor Correction）。PFC主要有兩種，一種叫主動式PFC，另一種叫被動式PFC。主動式PFC提升功率因素值至95%以上，被動式PFC約只能改善至75%。換句話說，主動式PFC比被動式PFC能節(jié)約更多的能源。采用主動式PFC的電源供應(yīng)器的重量，較用笨重組件的被動式PFC產(chǎn)品要輕巧許多，而產(chǎn)品走向輕薄小是未來3C市場必然趨勢。PFC電源哪家好被動式PFC通常為一塊體積較大的電感。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="PFC電源哪家好,PFC電源" src="https://tyunfile.71360.com/WaterMark/UploadFile/baoyixinneng/637406038635709246/2295771.png"></div><p style="text-indent:25px">如何快速維修pfc電路：6、保護(hù)電路，在液晶采電開關(guān)電源中，除具有常見的尖峰吸收保護(hù)電路外，還設(shè)在+24V、+ 12V和+5V電壓的過壓、過載保護(hù)電路，其保護(hù)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(hù)電路，在維修時可脫開不用，如果電壓恢復(fù)正常，說明保護(hù)電路引起，這時要分步斷開是哪路起作用。然后再進(jìn)行維修。7、開機(jī)前，先確認(rèn)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(jī)時，zui好把原機(jī)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">什么是主動式PFC？主動式PFC在結(jié)構(gòu)上來說基本就是一個通過PWM控制電流波形的AC/DC整流器，交流輸入通過整流橋進(jìn)行整流，然后PWM觸發(fā)主動PFC電路中的MosFET管，分離中間直流電壓到恒定脈沖序列，隨后這些脈沖信號通過濾波電容，將相對平順的電流送到主開關(guān)電路。此外我們可以在主動式PFC電路中看到一個體積相對較大的電感線圈，這個電感線圈可以對電流起到緩沖和梳理的作用，當(dāng)然它在體積和重量上比起被動式PFC的電感要小很多。從設(shè)計結(jié)構(gòu)上來說，主動式PFC顯然比被動式PFC更復(fù)雜，成本也更高。但是主動式PFC有著更寬廣的電壓適應(yīng)能力，在電壓波動較大的情況下仍然可以穩(wěn)定工作，不少產(chǎn)品甚至直接支持110V到220V電壓的輸入。同時在功率因數(shù)校正的效果上，主動式PFC也有凌駕于被動式PFC，可以輕松達(dá)到0.9以上，部分高級產(chǎn)品甚至可以實現(xiàn)無限接近于1的效果。此外由于主動式PFC電路的體積和重量都遠(yuǎn)小于被動式PFC，隨著電源額定功率的提升，其在體積和重量上的變化也不會很大，因此在被動式PFC電源上“越重越好”的標(biāo)準(zhǔn)其實并不適合主動式PFC電源。基本上功率因數(shù)可以衡量電力被有效利用的程度。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="PFC電源哪家好,PFC電源" src="https://tyunfile.71360.com/WaterMark/UploadFile/baoyixinneng/637406038685836223/2985647.png"></div><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，不同之處的第二點就是次級電壓比CRT的低，其它的地方與普通的開關(guān)電源原理相同，都一樣。測得大濾波電容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; 如果測得電容兩端電壓為+300V，說明PFC電路未工作，主查PFC振蕩集成電路。2、檢修液晶電源時; 首PFC振蕩集成電路。先確認(rèn)保險管狀態(tài)，保險管完好，通常PFC校正電路中的開關(guān)管等沒有失效。再測量大電解電容對地是否存在短路，有幾十千歐以上充電電阻，表明電源沒有擊穿。3、如果保險管損壞，一個要檢查PFC校正電路開關(guān)管，第二個要檢查副電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，+18V供伴音，+24 V供背光板。在實踐維修中，只要各組電壓一樣、功率一樣的電源板都可以代換。主動式PFC擁有更高的功率因數(shù)（高達(dá)99%）。天津PFC電源廠家聯(lián)系方式</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。PFC電源哪家好</p><p style="text-indent:25px">被動式PFC，不論靜音與否，他們都可以被稱作無源PFC。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(dá)到0.7~0.8。靜音型被動PFC相比非靜音型被動PFC，無論是成本上還是制造工藝上要求都比較高。這里還要說明的是，PFC會產(chǎn)生噪聲的原因。從原理上講，我們在上面看到的部分結(jié)構(gòu)上和電感類似，在對電流和電壓補償?shù)倪^程中，始終進(jìn)行著充放電的過程，因而產(chǎn)生了磁性，zui終會和周邊的金屬元件產(chǎn)生震動進(jìn)而發(fā)出噪音。靜音型PFC相當(dāng)于兩個非靜音型PFC的疊加，達(dá)到震動互相抵消的目的。但是，在消除噪音的手段中，安裝是否得當(dāng)也是對靜音效果影響較大的因素?！】傮w上來說，非靜音型被動PFC與靜音型被動PFC所能達(dá)到的效果大致相當(dāng)，但都要低于主動式PFC的功因校正效果。PFC電源哪家好</p></p><br /><p>文章來源地址: http://m.cdcfah.com/cp/2786097.html</p></div></div></div></div></div><div id="tyana8f" class="page-right twoColRt"><div id="kkhelsk" class="box01 margin10 clearfix"><h3><a href="http://m.cdcfah.com/cp/">猜你喜歡</a></h3><div id="v7bdanp" 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(qiáng) 信息推薦自業(yè)物資供應(yīng)" class="vcenter" 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