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onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div><div id="s7fhovx" 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="dskczgx" 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>廣州PFC電腦電源批發(fā),PFC電源</p><p><span>***更新：</span>2020-11-22 06:13:47</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="ap7bnzw" 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="furoqso" class="page-proshow02"><p class="title">詳細說明</p><div id="2c2xpg2" class="box"><p><p style="text-indent:25px">目前電腦用的電源PFC有兩種，一是被動式PFC，也稱無源PFC；一是主動式PFC，也稱有源式PFC。1、主動式PFC主要由高頻電感、開關(guān)管、電容以及控制IC等元件構(gòu)成，可簡單的歸納為升壓型開關(guān)電源電路，這種電路的特點是構(gòu)造復(fù)雜，廣州PFC電腦電源批發(fā)，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。2、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，它的原理是采用電感補償方法通過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)，被動式PFC的功率因數(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，廣州PFC電腦電源批發(fā)，比較適合中低端電源。3、主動式PFC設(shè)計復(fù)雜，成本較高；主動式PFC比被動式PFC性能要好，更加節(jié)能；主動式PFC的功率因數(shù)更高；被動式PFC電源成本低。正因如此，主動式PFC已成為當前電腦主流電源，廣州PFC電腦電源批發(fā)。如果你只是想用低端的電腦穩(wěn)定使用的話，那買個被動式PFC的電源使用沒問題。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。廣州PFC電腦電源批發(fā)</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="廣州PFC電腦電源批發(fā),PFC電源" src="https://tyunfile.71360.com/WaterMark/UploadFile/baoyixinneng/637406041733853787/2368324.png"></div><p style="text-indent:25px">主動式PFC的優(yōu)點：1、校正效果遠優(yōu)于歐洲的 EN 諧波規(guī)范，即便未來規(guī)格更趨嚴格也都能符合規(guī)定。隨著IC零件需求增加，成本將隨之降低。2、較無原料短缺的風(fēng)險。3、較被動式專業(yè)的解決方案。4、能以較低成本帶來全域電壓的高附加價值。5、功率因素接近完美的99%，使電力利用率較佳化，對環(huán)保有益。6、因應(yīng)未來CPU發(fā)展趨勢，輸出瓦特數(shù)(電力)要求將越高，主動式PFC因成本不隨輸出瓦特數(shù)增加而上升，故擁有較好競爭力。動式PFC優(yōu)于被動式PFC，因此，選擇節(jié)能型的電源必須選擇采用主動式PFC電路設(shè)計的電源。廣州PFC電腦電源批發(fā)“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)。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="廣州PFC電腦電源批發(fā),PFC電源" src="https://tyunfile.71360.com/WaterMark/UploadFile/baoyixinneng/637406041410054963/9568029.png"></div><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、+ 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，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、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。</p><p style="text-indent:25px">pfc對電源的重要性：這里我們需要指出的是，居民用戶只需要支付實際功率（瓦數(shù)）所消耗的電量，則不會支付回流到電網(wǎng)中無用功率的電量。而對于商業(yè)工廠用電則會追加無用功率這一部分的用電，因為他們所消耗電量的基數(shù)太大了。雖然對于居民用戶來說，我們不需要支付無用功率的電費，但是根據(jù)《歐盟EN61000-3-2號標準》（當然中國也有相關(guān)的法規(guī)條款），凡是功率擦超過75W的開關(guān)電源，都需要至少安裝被動PFC模塊。此外，在80Plus電源認證中，則要求功率因數(shù)需要超過0.9，甚至更多。不過在數(shù)年前，許多的電源廠商大多都在電源產(chǎn)品中使用被動PFC模塊。而PFC模塊則是一個減少諧波電流，并且將非線性負載轉(zhuǎn)換成線性負載的過濾器，電容和電感所產(chǎn)生的功率因數(shù)則會向單位值跟近一些?；旧瞎β室驍?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="廣州PFC電腦電源批發(fā),PFC電源" src="https://tyunfile.71360.com/WaterMark/UploadFile/baoyixinneng/637406041284644784/1270972.png"></div><p style="text-indent:25px">PFC就是功率因數(shù)校正的意思，主要用來表征電子產(chǎn)品對電能的利用效率。功率因數(shù)越高，說明電能的利用效率越高。PC電源采用傳統(tǒng)的橋式整流、電容濾波電路會使AC輸入電流產(chǎn)生嚴重的波形畸變，向電網(wǎng)注入大量的高次諧波，因此網(wǎng)側(cè)的功率因數(shù)不高，*有0.6左右，并對電網(wǎng)和其它電氣設(shè)備造成嚴重諧波污染與干擾。早在80年代初，人們已對這類裝置產(chǎn)生的高次諧波電流所造成的危害引起了關(guān)注。1982年，國際電工委員會制訂了IEC55－2限制高次諧波的規(guī)范（后來的修訂規(guī)范是IEC1000－3－2），促使眾多的電力電子技術(shù)工作者開始了對諧波濾波和功率因數(shù)校正（PFC）技術(shù)的研究。電子電源產(chǎn)品中引入PFC電路，就可以較大提高對電能的利用效率。主動式PFC電路可以將輸入電壓提高、減少電流的電能損耗。上海主動PFC電源采購</p><p style="text-indent:25px">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。廣州PFC電腦電源批發(fā)</p><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?，F(xiàn)在主動式PFC已經(jīng)成為主流和高級電源的標配。廣州PFC電腦電源批發(fā)</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、無功補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、電力計量產(chǎn)品、新能源設(shè)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(shè)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(guān)信息咨詢。的公司，是一家集研發(fā)、設(shè)計、生產(chǎn)和銷售為一體的專業(yè)化公司。保益新能深耕行業(yè)多年，始終以客戶的需求為向?qū)?，為客戶提?**的UPS/EPS電源，雙向逆變器，安防電源，激光儲能電源。保益新能始終以本分踏實的精神和必勝的信念，影響并帶動團隊取得成功。保益新能創(chuàng)始人王永麗，始終關(guān)注客戶，創(chuàng)新科技，竭誠為客戶提供良好的服務(wù)。</p></p><br /><p>文章來源地址: http://m.cdcfah.com/cp/2094313.html</p></div></div></div></div></div><div id="z2oq7r8" class="page-right twoColRt"><div id="mgxebnp" class="box01 margin10 clearfix"><h3><a href="http://m.cdcfah.com/cp/">猜你喜歡</a></h3><div id="3pyprik" 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)" 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