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id="7r27z2j" class="twoCol"><div id="ah7rd7m" 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>?青島被動(dòng)式PFC電源報(bào)價(jià) 真誠(chéng)推薦深圳市保益新能電氣供應(yīng)</p><div id="rgvh72b" class="leftbox clearfix"><h1>青島被動(dòng)式PFC電源報(bào)價(jià) 真誠(chéng)推薦深圳市保益新能電氣供應(yīng)</h1><div id="jikm7wn" class="proBig"><div id="j2tqi4g" 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="ub2zr9p" 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="qpm2htb" 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>青島被動(dòng)式PFC電源報(bào)價(jià),PFC電源</p><p><span>***更新：</span>2021-01-17 09:11:06</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="mbyam4m" 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="m7htaul" class="page-proshow02"><p class="title">詳細(xì)說(shuō)明</p><div id="ic2xey2" class="box"><p><p style="text-indent:25px">如何快速維修pfc電路：8、主開關(guān)電壓+24V或+12 V的輸出電流較大，對(duì)整流二極管要求較高，一般采用低壓差的大功率肖特基二極管，不能用普通的整流二極管替換。另外接負(fù)載后，電壓反而上升，多屬于電源濾波不好引起。9、電源帶負(fù)載能力差，青島被動(dòng)式PFC電源報(bào)價(jià)，首先要測(cè)一下PFC 電壓是否正常（380 v），如果正常，問(wèn)題就在電源厚膜上，通常是電源厚膜帶載能力差引起，這一點(diǎn)請(qǐng)大家注意。10，青島被動(dòng)式PFC電源報(bào)價(jià)、電源板上，貼有**三角形標(biāo)記的散熱片以及散熱片下面的電路，均為熱地，青島被動(dòng)式PFC電源報(bào)價(jià)。嚴(yán)謹(jǐn)直接用手接觸！注意任何檢測(cè)設(shè)備，都不能直接跨接在熱地和冷地之間。主動(dòng)式PFC則由電感線圈配合IC控制芯片組成。青島被動(dòng)式PFC電源報(bào)價(jià)</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="青島被動(dòng)式PFC電源報(bào)價(jià),PFC電源" src="https://tyunfile.71360.com/WaterMark/UploadFile/baoyixinneng/637406041284644784/1270972.png"></div><p style="text-indent:25px">電源沒(méi)有pfc會(huì)有什么后果：PFC是用來(lái)提高功率因數(shù)的，在電網(wǎng)中存在有功功率和無(wú)功功率，功率因數(shù)提高后，無(wú)功功率就減少了。在我國(guó)，使用的是有功電度表，它是無(wú)法測(cè)量無(wú)功功率的，所以即使電源沒(méi)有PFC，也不會(huì)多扣電費(fèi)。但是在國(guó)外比如歐洲，它們的電度表也會(huì)計(jì)算無(wú)功功率的，沒(méi)有PFC就意味著要花更多的電費(fèi)。所以zui好買帶PFC的電源，主動(dòng)PFC電源的功率因數(shù)可以做的比較高，建議購(gòu)買主動(dòng)PFC的電源。關(guān)于電壓，這個(gè)跟PFC關(guān)系不是太大，但需要注意的是，某些國(guó)家比如美國(guó)日本，它們使用的是110V交流電，那你購(gòu)買電源就要購(gòu)買支持100-240V全電壓的產(chǎn)品，以免到國(guó)外不能使用。電源的輸入電壓可以從電源銘牌看到，正規(guī)的支持全電壓的電源的銘牌會(huì)標(biāo)注100-240V電壓字樣，很好辨識(shí)。但是PFC就不容易從外觀看了，除非你拆開電源，簡(jiǎn)單的辦法就是到官方網(wǎng)站查詢產(chǎn)品資料。深圳主動(dòng)式PFC電源哪家好基本上功率因數(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="青島被動(dòng)式PFC電源報(bào)價(jià),PFC電源" src="https://tyunfile.71360.com/WaterMark/UploadFile/baoyixinneng/637406038737730808/982750.png"></div><p style="text-indent:25px">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(lái)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。簡(jiǎn)介：計(jì)算機(jī)開關(guān)電源是一種電容輸入型電路，其電流和電壓之間的相位差會(huì)造成交換功率的損失，此時(shí)便需要PFC電路提高功率因數(shù)。目前的PFC有兩種，一種為被動(dòng)式PFC（也稱無(wú)源PFC）和主動(dòng)式PFC（也稱有源式PFC）。</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校正電路開關(guān)管，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，+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)式PFC通過(guò)高頻電感線圈、開關(guān)電子管、高壓濾波電容以及控制IC等元件，組成一個(gè)電路。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="青島被動(dòng)式PFC電源報(bào)價(jià),PFC電源" src="https://tyunfile.71360.com/WaterMark/UploadFile/baoyixinneng/637406041344381105/9656200.png"></div><p style="text-indent:25px">pfc對(duì)電源的重要性：在一個(gè)純電抗負(fù)載電路中，電壓和電流之間會(huì)產(chǎn)生一定的是時(shí)間差，也就會(huì)出現(xiàn)相位差（zui大理論值為90度，一般情況多為45度），那么電壓與電流的乘積，就不一定每一時(shí)刻都為“正”了。在一個(gè)半周期內(nèi)，能量為“正”，另外一個(gè)半周期內(nèi)能量為“負(fù)”，那么就是說(shuō)，前半周期電源從電網(wǎng)中獲取能量，而在后半個(gè)周期內(nèi)，這些能量又會(huì)回流到國(guó)家電網(wǎng)中。所以如果按照一個(gè)周期計(jì)算，那么電源獲得的能量會(huì)為“零”，沒(méi)有能量。上面的兩種描述都是純理論的理想狀態(tài)。但在實(shí)際應(yīng)用中，電路中會(huì)有大量的電阻、電感和電容，在同一時(shí)刻都會(huì)有負(fù)載，也就會(huì)產(chǎn)生不同方向的“能量”。因此，所有的正向能量，我們稱其為“實(shí)際功率”，而反向回流電網(wǎng)的能量則稱之為“無(wú)用功率”，那么“實(shí)際功率”與“無(wú)用功率”的綜合，就是之前我們所說(shuō)的“視在功率”。但正如我們之前所提到的，“功率因數(shù)”實(shí)際上就是“實(shí)際功率”與“視在功率”的比值。而zui為理想的比值為“1”，當(dāng)然這還無(wú)法做到，因此只能無(wú)限接近于“1”，這個(gè)數(shù)值我們一般稱之為“功率因數(shù)”。一般來(lái)說(shuō)，功率在250W～300W的電源多采用被動(dòng)式PFC。深圳主動(dòng)式PFC電源哪家好</p><p style="text-indent:25px">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。青島被動(dòng)式PFC電源報(bào)價(jià)</p><p style="text-indent:25px">電源里主動(dòng)PFC和被動(dòng)PFC有什么區(qū)別：同樣額定功率的電源產(chǎn)品，主動(dòng)式PFC電源大部分有著比被動(dòng)式PFC產(chǎn)品更高的轉(zhuǎn)換效率，因?yàn)榍罢咄谧龉?、用料和架?gòu)上都會(huì)有更高的水平，品質(zhì)也會(huì)更好，所以主動(dòng)式PFC電源產(chǎn)品在客觀上更省電費(fèi)。主動(dòng)式PFC電源對(duì)交流輸入電壓的適應(yīng)性也更強(qiáng)，基本上目前的寬幅電源都采用了主動(dòng)式PFC設(shè)計(jì)，這樣在電壓波動(dòng)比較大環(huán)境下，主動(dòng)式PFC電源仍然可以保持穩(wěn)定的輸出。而被動(dòng)式PFC電源對(duì)輸入電壓的穩(wěn)定性有一定的要求，電壓浮動(dòng)的適應(yīng)范圍往往不如主動(dòng)式PFC產(chǎn)品，在輸入電壓起伏較大的環(huán)境下可能無(wú)法正常工作。青島被動(dòng)式PFC電源報(bào)價(jià)</p></p><br /><p>文章來(lái)源地址: http://www.cdcfah.com/cp/2886744.html</p></div></div></div></div></div><div id="wkhzwve" class="page-right twoColRt"><div id="bfm2q2y" class="box01 margin10 clearfix"><h3><a href="http://www.cdcfah.com/cp/">猜你喜歡</a></h3><div id="vel7hbn" 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) 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