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class="leftbox clearfix"><h1>廣州主動PFC電源報價 **** 深圳市保益新能電氣供應(yīng)</h1><div id="pdpmbs9" class="proBig"><div id="ankri8m" 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="jxyules" 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="t29k4nz" 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>廣州主動PFC電源報價,PFC電源</p><p><span>***更新：</span>2021-01-15 06:10:08</p><p><span id="click" >瀏覽次數(shù)：1次</span></p><a rel="nofollow" class="button">聯(lián)系我們</a></div></div><div id="xmoahxg" 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(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="bk8tm3s" class="page-proshow02"><p class="title">詳細(xì)說明</p><div id="o2ab222" class="box"><p><p style="text-indent:25px">主動式PFC的一般結(jié)構(gòu)：主動式PFC一般由功率MOFET開關(guān)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(shè)計還是比較復(fù)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(shè)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(shè)計比較復(fù)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，廣州主動PFC電源報價，廣州主動PFC電源報價，廣州主動PFC電源報價，它能適應(yīng)更高的電壓范圍，這對于玩家來說是非常關(guān)鍵的。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。廣州主動PFC電源報價</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="廣州主動PFC電源報價,PFC電源" src="https://tyunfile.71360.com/WaterMark/UploadFile/baoyixinneng/637406041362838188/2093902.png"></div><p style="text-indent:25px">PC電源為什么需要配置PFC電路？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，這種負(fù)載在采用交流輸入時，其電壓與電流的波形都將呈現(xiàn)正弦曲線且相位相同，換句話說電壓和電流都會在同一時刻逆轉(zhuǎn)極性，能量一直為正向移動；另外一種則是電抗型負(fù)載，這種負(fù)載在采用交流輸入時雖然電壓與電流的波形同樣為正弦曲線，但兩個波形之間存在相位差，這樣就無法保證電壓與電流在每一個時刻都是相同的極性，在極性相反的周期內(nèi)，能量是反向移動。由于電壓與電流波形之間存在相位差，因此會有反向能量即無效功率的產(chǎn)生。當(dāng)然這兩種都是理想狀態(tài)下的負(fù)載，在實際應(yīng)用中其實是電阻性負(fù)載與電抗型負(fù)載的混合，極少存在單一型負(fù)載的情況，因此在任意時刻的負(fù)載中會有兩種不同方向的能量，其中只有正向能量是有價值的，我們將其稱為有效功率，反向能量則稱為無效功率，而兩者的綜合就是視在功率了。上海PFC電腦電源采購被動式PFC曾經(jīng)是PC電源上的主流。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="廣州主動PFC電源報價,PFC電源" src="https://tyunfile.71360.com/WaterMark/UploadFile/baoyixinneng/637406038635709246/2295771.png"></div><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(dāng)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。現(xiàn)在主動式PFC已經(jīng)成為主流和高級電源的標(biāo)配。</p><p style="text-indent:25px">無源PFC的兩種方式：一是、直接將反激電路前級的400V大電解拿掉，換上CBB，于是輸入到電路中的電壓波形就是正弦波了，然后將電源的變壓器調(diào)節(jié)感量，使其達(dá)到DCM和CCM工作模式的臨界點上，調(diào)的準(zhǔn)的，能將PF值調(diào)到0.9.這樣做的缺點也是一下就能看出來了，因為輸入電壓降低，效率降下一截，且由于沒有前級濾波電路紋流變大，電路的穩(wěn)定性也較大降低。二是、填谷電路，增加三只二極管，400V電解換成兩只250V的，這個電路比前面那個電路好一些，因為輸入級的紋波沒那么大。但輸入電壓的谷值是原來電解直接濾波的一半，峰值不變。也一樣會降低電源的效率和穩(wěn)定性。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="廣州主動PFC電源報價,PFC電源" src="https://tyunfile.71360.com/WaterMark/UploadFile/baoyixinneng/637406038577291288/3249165.png"></div><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。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，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由多塊硅鋼片外部纏繞銅線而成。上海PFC電腦電源采購</p><p style="text-indent:25px">“電感補償式”包括靜音式和非靜音式。廣州主動PFC電源報價</p><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(guān)于電壓，這個跟PFC關(guān)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(biāo)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。廣州主動PFC電源報價</p></p><br 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