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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>?天津PFC電腦電源多少錢推薦咨詢深圳市保益新能電氣供應(yīng)</p><div id="jy2nuwd" class="leftbox clearfix"><h1>天津PFC電腦電源多少錢推薦咨詢深圳市保益新能電氣供應(yīng)</h1><div id="l7gpwt3" class="proBig"><div id="lumogs8" class="bigimg"><div><p class="pic"><img src="https://tyunfile.71360.com/WaterMark/UploadFile/baoyixinneng/637406038737730808/982750.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div><div id="ey3dfmj" class="smallimg"><div><p class="pic"><img src="https://tyunfile.71360.com/WaterMark/UploadFile/baoyixinneng/637406038737730808/982750.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div></div><div id="tn8j8ov" 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>天津PFC電腦電源多少錢,PFC電源</p><p><span>***更新：</span>2020-11-14 11:26:49</p><p><span id="click" >瀏覽次數(shù)：2次</span></p><a rel="nofollow" class="button">聯(lián)系我們</a></div></div><div id="v3prt27" 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="t2nfrgm" class="page-proshow02"><p class="title">詳細說明</p><div id="kjb29i3" class="box"><p><p style="text-indent:25px">有源PFC的基本原理是在開關(guān)電源的整流電路和濾波電容之間增加一個DC-DC的斬波電路(附加開關(guān)電源)，對于供電線路來說該整流電路輸出沒有直接接濾波電容，所以其對于供電線路來說呈現(xiàn)的是純阻性的負載，其電壓和電流波形同相、相位相同。斬波電路的工作也類似于一個開關(guān)電源。所以說有源PFC開關(guān)電源就是一個雙開關(guān)電源的開關(guān)電源電路，它是由斬波器(我們以后稱它為：“PFC開關(guān)電源”)和穩(wěn)壓開關(guān)電源(我們以后稱它為：“PWM開關(guān)電源”)組成的。有源PFC電路的原理：有源PFC則是有很好的效果，基本上可以完全的消除電流波形的畸變，而且電壓和電流的相位可以控制保持一致，它可以基本上完全解決了功率因數(shù)、電磁兼容，天津PFC電腦電源多少錢、電磁干擾的問題，但是電路非常的復雜，其基本思路是在220V整流橋堆后去掉濾波電容(以消除因電容的充電造成的電流波形畸變及相位的變化)，去掉濾波電容后由一個“斬波”電路把脈動的直流變成高頻(約100K)交流再經(jīng)過整流濾波后，天津PFC電腦電源多少錢，其直流電壓再向常規(guī)的PWM開關(guān)穩(wěn)壓電源供電，天津PFC電腦電源多少錢，其過程是; AC→DC→AC→DC。主動式和被動式pfc是衡量電源檔次高低的一個重要因素。天津PFC電腦電源多少錢</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="天津PFC電腦電源多少錢,PFC電源" src="https://tyunfile.71360.com/WaterMark/UploadFile/baoyixinneng/637406038737730808/982750.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。天津PFC電腦電源多少錢一般來說，功率在250W～300W的電源多采用被動式PFC。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="天津PFC電腦電源多少錢,PFC電源" src="https://tyunfile.71360.com/WaterMark/UploadFile/baoyixinneng/637406041362838188/2093902.png"></div><p style="text-indent:25px">電感補償式的被動式PFC有結(jié)構(gòu)簡單、成本低廉的優(yōu)勢，但是其電感的體積和重量都會隨著電源額定功率的提升而增加，因此被動式PFC基本上不會用在額定功率比較高的電源產(chǎn)品中。另外由于被動式PFC電源往往有著比較高的重量，因此在玩家群體里產(chǎn)生了一種“電源越重品質(zhì)越好”的判斷方法，這個判斷法一直沿用至今，雖然現(xiàn)在基本已經(jīng)沒有實用價值，但仍然被不少剛?cè)腴T的玩家奉為信條。值得一提的是，由于有這樣的判斷法，在被動式PFC電源仍是主流的年代，有不少假冒偽劣產(chǎn)品會采用假的PFC電感，這些電感在表面上和真品沒什么區(qū)別，但實際上可能只有硅鋼片而沒有銅線繞圈，甚至只是灌裝水泥冒充的，以增加電源的重量。因此“電源越重品質(zhì)越好”的判斷方法就算有些參考意義，但顯然不會是一定的判斷標準。采用假PFC的電源，其PF值只有0.5到0.6的水平。此外被動式PFC電源對輸入電壓的穩(wěn)定性有一定的要求，基本上電壓波動的允許范圍不會太廣。而且由于被動式PFC適合在比較高的電壓下使用，因此采用110V輸入設(shè)計的被動式PFC電源還需要添加一個倍壓器，將輸入電壓從110V增加至220V，以保證PFC電路工作的正常。</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)造復雜，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，比較適合中低端電源。3、主動式PFC設(shè)計復雜，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。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?！半姼醒a償式”包括靜音式和非靜音式。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="天津PFC電腦電源多少錢,PFC電源" src="https://tyunfile.71360.com/WaterMark/UploadFile/baoyixinneng/637406041733853787/2368324.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。計算機開關(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造成交換功率的損失，此時便需要PFC電路提高功率因數(shù)。目前的PFC有兩種，一種為被動式PFC（也稱無源PFC）和主動式PFC（也稱有源式PFC）。計算機開關(guān)電源是一種電容輸入型電路。蘇州主動式電源pfc批發(fā)</p><p style="text-indent:25px">目前電路負載基本上可以分為兩種模式，其一為電阻型負載，另外一種則是電抗型負載。天津PFC電腦電源多少錢</p><p style="text-indent:25px">主動式PFC和被動式PFC電源共同與不同之處簡單地說，主動式PFC就是一個有源的升壓電路。它通過高頻電感線圈、開關(guān)電子管、高壓濾波電容以及控制IC等元件，組成一個可以將輸入電壓提高的電路，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。為什么升高輸入電壓會減少電能損耗呢？我們知道，功率P=UI，在電網(wǎng)的輸入總功率P一定的情況下，只要提高電壓，電流值就會變小，從而降低電路的電能損耗。我們國家的電網(wǎng)系統(tǒng)之所以要采用高壓電線來傳輸電能，也是出于降低能耗的考慮。天津PFC電腦電源多少錢</p><p style="text-indent:25px">深圳市保益新能電氣有限公司主營品牌有保益，發(fā)展規(guī)模團隊不斷壯大，該公司生產(chǎn)型的公司。公司致力于為客戶提供安全、質(zhì)量有保證的良好產(chǎn)品及服務(wù)，是一家有限責任公司企業(yè)。公司始終堅持客戶需求優(yōu)先的原則，致力于提供高質(zhì)量的UPS/EPS電源，雙向逆變器，安防電源，激光儲能電源。保益新能以創(chuàng)造***產(chǎn)品及服務(wù)的理念，打造高指標的服務(wù)，引導行業(yè)的發(fā)展。</p></p><br /><p>文章來源地址: http://m.cdcfah.com/cp/1988821.html</p></div></div></div></div></div><div id="zovxjqn" class="page-right twoColRt"><div id="xcuwd8l" class="box01 margin10 clearfix"><h3><a href="http://m.cdcfah.com/cp/">猜你喜歡</a></h3><div id="vkh89h0" 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)" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></div><p>福建ZF配件哪家強信息推薦自業(yè)物資供應(yīng)</p></a></div><div id="3kryary" class="recomPic likePro"><a href="http://m.cdcfah.com/cp/846569.html"><div><img 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