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class="bigimg"><div><p class="pic"><img src="https://tyunfile.71360.com/WaterMark/UploadFile/baoyixinneng/637406041362838188/2093902.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div><div id="scodzq2" class="smallimg"><div><p class="pic"><img src="https://tyunfile.71360.com/WaterMark/UploadFile/baoyixinneng/637406041362838188/2093902.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div></div><div id="foqsug2" 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)品關鍵詞：</span>上海電源pfc價格,PFC電源</p><p><span>***更新：</span>2020-12-11 05:12:45</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="p3y9kgn" 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="dsu82wy" class="page-proshow02"><p class="title">詳細說明</p><div id="dh39ypr" 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。先確認保險管狀態(tài)，上海電源pfc價格，保險管完好，通常PFC校正電路中的開關管等沒有失效。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，上海電源pfc價格。3、如果保險管損壞，一個要檢查PFC校正電路開關管，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為待機電壓，+12V供數(shù)字板，+18V供伴音，+24 V供背光板，上海電源pfc價格。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。相對于被動PFC簡單直觀的外形，主動式PFC電路要復雜許多。上海電源pfc價格</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="上海電源pfc價格,PFC電源" src="https://tyunfile.71360.com/WaterMark/UploadFile/baoyixinneng/637406041362838188/2093902.png"></div><p style="text-indent:25px">主動式PFC的一般結構：主動式PFC一般由功率MOFET開關管、PFC二極管、電感、濾波電容和NTC熱敏電阻以及IC整合電路六個電子元器件組成。下面我們就來看看這些配置吧。主電容及IC整合電路：主動式PFC電路的設計還是比較復雜的，這無形之中就增加了電源的制作成本，因此在市場上，采用主動式PFC電路設計的電源給消費者的感覺就是價格比較高。雖然說主動式PFC電路設計比較復雜，成本也比較高，但是它帶來的效益還是不可估量的，zui重要的是，它能適應更高的電壓范圍，這對于玩家來說是非常關鍵的。上海電源pfc價格被動式PFC由多塊硅鋼片外部纏繞銅線而成。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="上海電源pfc價格,PFC電源" src="https://tyunfile.71360.com/WaterMark/UploadFile/baoyixinneng/637406038655679952/7203321.png"></div><p style="text-indent:25px">pfc對電源的重要性：在一個純電抗負載電路中，電壓和電流之間會產(chǎn)生一定的是時間差，也就會出現(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，就不一定每一時刻都為“正”了。在一個半周期內，能量為“正”，另外一個半周期內能量為“負”，那么就是說，前半周期電源從電網(wǎng)中獲取能量，而在后半個周期內，這些能量又會回流到國家電網(wǎng)中。所以如果按照一個周期計算，那么電源獲得的能量會為“零”，沒有能量。上面的兩種描述都是純理論的理想狀態(tài)。但在實際應用中，電路中會有大量的電阻、電感和電容，在同一時刻都會有負載，也就會產(chǎn)生不同方向的“能量”。因此，所有的正向能量，我們稱其為“實際功率”，而反向回流電網(wǎng)的能量則稱之為“無用功率”，那么“實際功率”與“無用功率”的綜合，就是之前我們所說的“視在功率”。但正如我們之前所提到的，“功率因數(shù)”實際上就是“實際功率”與“視在功率”的比值。而zui為理想的比值為“1”，當然這還無法做到，因此只能無限接近于“1”，這個數(shù)值我們一般稱之為“功率因數(shù)”。</p><p style="text-indent:25px">被動式PFC：被動式PFC一般分“電感補償式”和“填谷電路式(Valley Fill Circuit)”“電感補償式”是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)，“電感補償式”包括靜音式和非靜音式?！半姼醒a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?！疤罟入娐肥健睂儆谝环N新型無源功率因數(shù)校正電路，其特點是利用整流橋后面的填谷電路來大幅度增加整流管的導通角，通過填平谷點，使輸入電流從尖峰脈沖變?yōu)榻咏谡也ǖ牟ㄐ危瑢⒐β室驍?shù)提高到0.9左右，明顯降低總諧波失真。與傳統(tǒng)的電感式無源功率因數(shù)校正電路相比，其優(yōu)點是電路簡單，功率因數(shù)補償效果明顯，并且在輸入電路中不需要使用體積大重量沉的大電感器。主動式PFC：而主動式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。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="上海電源pfc價格,PFC電源" src="https://tyunfile.71360.com/WaterMark/UploadFile/baoyixinneng/637406038685836223/2985647.png"></div><p style="text-indent:25px">電源沒有pfc會有什么后果：PFC是用來提高功率因數(shù)的，在電網(wǎng)中存在有功功率和無功功率，功率因數(shù)提高后，無功功率就減少了。在我國，使用的是有功電度表，它是無法測量無功功率的，所以即使電源沒有PFC，也不會多扣電費。但是在國外比如歐洲，它們的電度表也會計算無功功率的，沒有PFC就意味著要花更多的電費。所以zui好買帶PFC的電源，主動PFC電源的功率因數(shù)可以做的比較高，建議購買主動PFC的電源。關于電壓，這個跟PFC關系不是太大，但需要注意的是，某些國家比如美國日本，它們使用的是110V交流電，那你購買電源就要購買支持100-240V全電壓的產(chǎn)品，以免到國外不能使用。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標注100-240V電壓字樣，很好辨識。但是PFC就不容易從外觀看了，除非你拆開電源，簡單的辦法就是到官方網(wǎng)站查詢產(chǎn)品資料。與被動式PFC相比，主動式PFC電路省去了一個較大體積的含有硅鋼片的電感。成都電源pfc生產(chǎn)廠家</p><p style="text-indent:25px">無源PFC電路是以**電源的效率和穩(wěn)定性為代價的。上海電源pfc價格</p><p style="text-indent:25px">隨著我國加入WTO后，國外公司也瞄準我國市場使得市場競爭更趨激烈，但我們并不能就此放棄，因為國內工礦電機車市場是供大于求的，行業(yè)生產(chǎn)能力過剩，市場競爭激烈，在正常情況下生產(chǎn)整車虧損，而生產(chǎn)配件有微利。據(jù)相關資料顯示，中國在電氣設備、電源產(chǎn)品、逆變器，UPS，通訊電源，儲能電源產(chǎn)品、工業(yè)電源、電池充放電電源設備、電池充放電管理系統(tǒng)設備、數(shù)字電源、無功補償器或者功率矯正器、數(shù)字控制技術軟件、工業(yè)控制軟件、電力計量產(chǎn)品、新能源設備、太陽能、并網(wǎng)逆變器、離網(wǎng)逆變器、匯流箱、控制器，通訊設備產(chǎn)品、節(jié)能電子產(chǎn)品、回饋式電源負載的研發(fā)、銷售及相關信息咨詢。尤其是太陽能方面的技術已趨于世界優(yōu)先地位，占據(jù)了全球70%以上的市場占比，成為重要的“地區(qū)綠色名片”之一。中國電工電氣產(chǎn)業(yè)在短短數(shù)十年間迅猛發(fā)展，從草根產(chǎn)業(yè)崛起成為全球電工電氣產(chǎn)業(yè)的優(yōu)先者，堪稱中國近代工業(yè)史上的一個奇跡。這得益于各級相關部門營造了良好積極的政策環(huán)境和市場環(huán)境，同時，也離不開中國電工電氣伏企業(yè)，尤其是民營企業(yè)的艱苦奮斗、攻堅克難。國內企業(yè)掌握了整合全球光伏資源的經(jīng)驗，運營能力大幅提升，海外市場成為各大銷售企業(yè)的重要突破點。銷售系列產(chǎn)品的推陳出新夯實了奔一的技術基礎，這不僅是助力新能源改進的努力，更是奔一人不忘初心的“匠心”精神和堅守品質的體現(xiàn)。上海電源pfc價格</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備、電源產(chǎn)品、逆變器，UPS，通訊電源，儲能電源產(chǎn)品、工業(yè)電源、電池充放電電源設備、電池充放電管理系統(tǒng)設備、數(shù)字電源、無功補償器或者功率矯正器、數(shù)字控制技術軟件、工業(yè)控制軟件、電力計量產(chǎn)品、新能源設備、太陽能、并網(wǎng)逆變器、離網(wǎng)逆變器、匯流箱、控制器，通訊設備產(chǎn)品、節(jié)能電子產(chǎn)品、回饋式電源負載的研發(fā)、銷售及相關信息咨詢。的公司，致力于發(fā)展為創(chuàng)新務實、誠實可信的企業(yè)。公司自創(chuàng)立以來，投身于UPS/EPS電源，雙向逆變器，安防電源，激光儲能電源，是電工電氣的主力軍。保益新能不斷開拓創(chuàng)新，追求出色，以技術為先導，以產(chǎn)品為平臺，以應用為重點，以服務為保證，不斷為客戶創(chuàng)造更高價值，提供更優(yōu)服務。保益新能創(chuàng)始人王永麗，始終關注客戶，創(chuàng)新科技，竭誠為客戶提供良好的服務。</p></p><br /><p>文章來源地址: http://m.cdcfah.com/cp/2355888.html</p></div></div></div></div></div><div id="aubd2c3" class="page-right twoColRt"><div id="nrdubn3" class="box01 margin10 clearfix"><h3><a href="http://m.cdcfah.com/cp/">猜你喜歡</a></h3><div id="8icovmy" 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" class="vcenter" 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