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src="https://tyunfile.71360.com/WaterMark/UploadFile/baoyixinneng/637406038635709246/2295771.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div></div><div id="nwyaczb" 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>上海被動(dòng)式電源pfc采購(gòu),PFC電源</p><p><span>***更新：</span>2020-12-12 06:11:52</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="lkro33p" 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="shzrjvx" class="page-proshow02"><p class="title">詳細(xì)說(shuō)明</p><div id="gumebdk" class="box"><p><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”，上海被動(dòng)式電源pfc采購(gòu)，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，上海被動(dòng)式電源pfc采購(gòu)，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），上海被動(dòng)式電源pfc采購(gòu)。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。上海被動(dòng)式電源pfc采購(gòu)</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="上海被動(dòng)式電源pfc采購(gòu),PFC電源" src="https://tyunfile.71360.com/WaterMark/UploadFile/baoyixinneng/637406038635709246/2295771.png"></div><p style="text-indent:25px">主動(dòng)式PFC和被動(dòng)式PFC電源共同與不同之處簡(jiǎn)單地說(shuō)，主動(dòng)式PFC就是一個(gè)有源的升壓電路。它通過(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)可以將輸入電壓提高的電路，通過(guò)升高輸入電壓來(lái)減少電流在流向下級(jí)電路中的電能損耗。為什么升高輸入電壓會(huì)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(huì)變小，從而降低電路的電能損耗。我們國(guó)家的電網(wǎng)系統(tǒng)之所以要采用高壓電線來(lái)傳輸電能，也是出于降低能耗的考慮。南京主動(dòng)式PFC電源哪家好PFC分為主動(dòng)式（有源）和被動(dòng)式（無(wú)源）兩種。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="上海被動(dòng)式電源pfc采購(gòu),PFC電源" src="https://tyunfile.71360.com/WaterMark/UploadFile/baoyixinneng/637406041344381105/9656200.png"></div><p style="text-indent:25px">如何快速維修pfc電路：4、電源板可以從電視上摘下**維修，維修時(shí)只需要把開關(guān)機(jī)控制電路三極管C、E短接（或?qū)⒁恢?.5K左右的電阻與副電源的+5V輸出端相連》，整機(jī)就處于開機(jī)狀態(tài)，各路電壓均有輸出。在部分液晶采電的開關(guān)電源中，只有+ 12V或+24V輸出端帶有一定功率的負(fù)載，主開關(guān)電源才進(jìn)行正常的工作狀態(tài)。所以在+24V輸出端上你可以接一只電動(dòng)自行車的36 V燈泡作假負(fù)載（或在+ 12V輸出端接一只摩托車燈泡作假負(fù)載）即可。5、液晶電源通電后，副電源先工作，輸出+5V電壓給數(shù)字板上的CPU，此時(shí)整機(jī)處于待機(jī)狀態(tài)。當(dāng)按”待機(jī)“鍵后，CPU輸出開機(jī)電平，PFC 電路先工作，將+300V脈動(dòng)直流電壓轉(zhuǎn)換成正常的直流電壓（+380V）后，這時(shí)主開關(guān)電源的脈寬振蕩器才開始工作; 接著主開關(guān)變壓器次級(jí)輸出+ 12V、+24V電壓，整機(jī)進(jìn)入正常工作狀態(tài)。</p><p style="text-indent:25px">電感補(bǔ)償式的被動(dòng)式PFC有結(jié)構(gòu)簡(jiǎn)單、成本低廉的優(yōu)勢(shì)，但是其電感的體積和重量都會(huì)隨著電源額定功率的提升而增加，因此被動(dòng)式PFC基本上不會(huì)用在額定功率比較高的電源產(chǎn)品中。另外由于被動(dòng)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(gè)判斷法一直沿用至今，雖然現(xiàn)在基本已經(jīng)沒有實(shí)用價(jià)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(dòng)式PFC電源仍是主流的年代，有不少假冒偽劣產(chǎn)品會(huì)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(shí)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(huì)是一定的判斷標(biāo)準(zhǔn)。采用假PFC的電源，其PF值只有0.5到0.6的水平。此外被動(dòng)式PFC電源對(duì)輸入電壓的穩(wěn)定性有一定的要求，基本上電壓波動(dòng)的允許范圍不會(huì)太廣。而且由于被動(dòng)式PFC適合在比較高的電壓下使用，因此采用110V輸入設(shè)計(jì)的被動(dòng)式PFC電源還需要添加一個(gè)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。PFC當(dāng)中的開關(guān)穩(wěn)壓電源功能和普通的開關(guān)穩(wěn)壓電源的區(qū)別并不巨大，只是在供電上有所區(qū)別。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="上海被動(dòng)式電源pfc采購(gòu),PFC電源" src="https://tyunfile.71360.com/WaterMark/UploadFile/baoyixinneng/637406041284644784/1270972.png"></div><p style="text-indent:25px">主動(dòng)式PFC的一般結(jié)構(gòu)：主動(dòng)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(gè)電子元器件組成。下面我們就來(lái)看看這些配置吧。主電容及IC整合電路：主動(dòng)式PFC電路的設(shè)計(jì)還是比較復(fù)雜的，這無(wú)形之中就增加了電源的制作成本，因此在市場(chǎng)上，采用主動(dòng)式PFC電路設(shè)計(jì)的電源給消費(fèi)者的感覺就是價(jià)格比較高。雖然說(shuō)主動(dòng)式PFC電路設(shè)計(jì)比較復(fù)雜，成本也比較高，但是它帶來(lái)的效益還是不可估量的，zui重要的是，它能適應(yīng)更高的電壓范圍，這對(duì)于玩家來(lái)說(shuō)是非常關(guān)鍵的。被動(dòng)式PFC一般分“電感補(bǔ)償式”和“填谷電路式（Valley Fill Circuit）”。青島電源pfc采購(gòu)</p><p style="text-indent:25px">主動(dòng)式PFC體積小、通過(guò)**IC去調(diào)整電流的波形，對(duì)電流電壓間的相位差進(jìn)行補(bǔ)償。上海被動(dòng)式電源pfc采購(gòu)</p><p style="text-indent:25px">開關(guān)電源中的pfc是什么意思？PFC就是功率因數(shù)校正，由于開關(guān)電源不是純電阻負(fù)載，屬于容性負(fù)載，大量的開關(guān)電源同時(shí)使用會(huì)干擾電網(wǎng)，使電網(wǎng)不平衡。一般開關(guān)電源的功率因數(shù)PF為0.6左右。理想的純電阻負(fù)載功率因數(shù)PF為1，開關(guān)電源經(jīng)功率因數(shù)PF校正后可以達(dá)到0.8以上！開關(guān)電源功率因素低，會(huì)影響電網(wǎng)的使用效率，比如：10KW的電力變壓器，如果使用功率因數(shù)PF為0.6，功率1KW的開關(guān)電源，只能同時(shí)帶動(dòng)6臺(tái)這樣的開關(guān)電源，如果使用功率因數(shù)PF為0.9，功率1KW的開關(guān)電源，可以同時(shí)帶動(dòng)9臺(tái)這樣的開關(guān)電源！大量使用功率因素低的開關(guān)電源，會(huì)將許多功率消耗在電線上，使電線發(fā)熱。還會(huì)使電網(wǎng)的正弦波失真變形，影響其它電器的正常使用。一般大功率開關(guān)電源，都要求功率因數(shù)PF在0.8以上！對(duì)于手機(jī)充電器這樣的小功率開關(guān)電源，沒有要求。對(duì)于LED電源，有些對(duì)功率因數(shù)也有要求。上海被動(dòng)式電源pfc采購(gòu)</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(chǔ)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(wú)功補(bǔ)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(jì)量產(chǎn)品、新能源設(shè)備、太陽(yáng)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(fù)載的研發(fā)、銷售及相關(guān)信息咨詢。的公司，致力于發(fā)展為創(chuàng)新務(wù)實(shí)、誠(chéng)實(shí)可信的企業(yè)。保益新能作為電氣設(shè)備、電源產(chǎn)品、逆變器，UPS，通訊電源，儲(chǔ)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(wú)功補(bǔ)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(jì)量產(chǎn)品、新能源設(shè)備、太陽(yáng)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(fù)載的研發(fā)、銷售及相關(guān)信息咨詢。的企業(yè)之一，為客戶提供良好的UPS/EPS電源，雙向逆變器，安防電源，激光儲(chǔ)能電源。保益新能不斷開拓創(chuàng)新，追求出色，以技術(shù)為先導(dǎo)，以產(chǎn)品為平臺(tái)，以應(yīng)用為重點(diǎn)，以服務(wù)為保證，不斷為客戶創(chuàng)造更高價(jià)值，提供更優(yōu)服務(wù)。保益新能始終關(guān)注電工電氣市場(chǎng)，以敏銳的市場(chǎng)洞察力，實(shí)現(xiàn)與客戶的成長(zhǎng)共贏。</p></p><br /><p>文章來(lái)源地址: 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