山西大功率電源模塊報(bào)價(jià) **** 上海多商電子供應(yīng)-b2b網(wǎng)站_b2b電子商務(wù)平臺(tái)【買(mǎi)產(chǎn)品】-上?？谄蚴称酚邢薰?/title><meta name="description" content="在電源的應(yīng)用電路中，會(huì)出現(xiàn)大功率電源模塊輸出端電壓不正常，輸出端就是沒(méi)有任何輸出，大功率電源模塊也無(wú)損壞，是什么原因呢？或許是大功率電源模塊本身就無(wú)法啟動(dòng)？外接電容過(guò)大（即容性負(fù)載過(guò)大），需要充電的時(shí)間變長(zhǎng)，有些大功率電源模塊在規(guī)定時(shí)間內(nèi)不"><meta name="keywords" content="山西大功率電源模塊報(bào)價(jià),大功率電源模塊"><link rel="canonical" href="http://www.cdcfah.com/"/><meta name="applicable-device" content="pc"><link rel="shortcut icon" href="/static/new_net_01/images/favicon.ico"><link rel="stylesheet" href="/static/new_net_01/css/slick.css" /><link rel="stylesheet" href="/static/new_net_01/css/addnew.css"><link rel="stylesheet" href="/static/new_net_01/css/sidenav.css"><link rel="stylesheet" href="/static/new_net_01/css/style.css" /><link rel="stylesheet" href="/static/new_net_01/css/tab.css"><link rel="stylesheet" href="/static/new_net_01/css/404.css"> <meta name="baidu-site-verification" 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style="color: #f30;"></span></p><p><span>產(chǎn)品關(guān)鍵詞：</span>山西大功率電源模塊報(bào)價(jià),大功率電源模塊</p><p><span>***更新：</span>2021-02-01 05:15:26</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="3gdnubf" class="rightbox"><h3>公司基本資料信息</h3><p style="border:0;"><a rel="nofollow">上海多商電子有限公司</a></p><p><span>聯(lián)系人：</span>吳加斌</p><p><span>郵箱: </span>wu867@126.com</p><p><span>電話: </span>18121221687</p><p><span>傳真: </span>021_69585559</p><p><span>網(wǎng)址: </span>http://www.10000kw.com</p><p><span>手機(jī): </span>021-69585559</p><p><span>地址: </span>上海市嘉定區(qū)科福路358號(hào)4號(hào)樓4樓</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="2i2wvc8" class="page-proshow02"><p class="title">詳細(xì)說(shuō)明</p><div id="kjgnzwk" class="box"><p><p style="text-indent:25px">在電源的應(yīng)用電路中，會(huì)出現(xiàn)大功率電源模塊輸出端電壓不正常，輸出端就是沒(méi)有任何輸出，大功率電源模塊也無(wú)損壞，是什么原因呢？或許是大功率電源模塊本身就無(wú)法啟動(dòng)？外接電容過(guò)大（即容性負(fù)載過(guò)大），需要充電的時(shí)間變長(zhǎng)，有些大功率電源模塊在規(guī)定時(shí)間內(nèi)不能建立好輸出電壓，就會(huì)進(jìn)入過(guò)流保護(hù)，從而模塊無(wú)輸出；電子負(fù)載在CC模式下也會(huì)造成部分啟動(dòng)能力弱的大功率電源模塊啟機(jī)不良，由于在CC模式下啟機(jī)的時(shí)候，其模擬的負(fù)載趨近于零，且反應(yīng)調(diào)節(jié)時(shí)間相對(duì)較長(zhǎng)，山西大功率電源模塊報(bào)價(jià)，山西大功率電源模塊報(bào)價(jià)，山西大功率電源模塊報(bào)價(jià)，絕大多數(shù)的大功率電源模塊應(yīng)用的環(huán)境屬于純電阻模式；負(fù)載需要的電流過(guò)大，而大功率電源模塊單位輸出的較大平均電流不夠?qū)е履K無(wú)法啟動(dòng)；輸入線路過(guò)長(zhǎng)，使得線路之間產(chǎn)生的壓降過(guò)大，而導(dǎo)致輸入電壓低于模塊輸入電壓的下限要求。并聯(lián)均流原理二：調(diào)節(jié)開(kāi)路輸出電壓實(shí)現(xiàn)均流。山西大功率電源模塊報(bào)價(jià)</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="山西大功率電源模塊報(bào)價(jià),大功率電源模塊" src="https://tyunfile.71360.com/UploadFile/shdsdz/637393060379653267/3899269.png"></div><p style="text-indent:25px">一般在不同的使用領(lǐng)域，對(duì)大功率電源模塊的工作溫度范圍要求各異：高低溫測(cè)試是用來(lái)確定產(chǎn)品在低溫、高溫兩個(gè)極端氣候環(huán)境條件下的適應(yīng)性和一致性，檢查設(shè)計(jì)余量是否足夠。因?yàn)樵骷奶匦栽诘蜏亍⒏邷氐臈l件下會(huì)發(fā)生一定的變化，性能參數(shù)具有溫度漂移特性。所以往往很多電源模塊在常溫測(cè)試通過(guò)，一旦拿到高低溫環(huán)境測(cè)試就發(fā)現(xiàn)工作不正常或者性能參數(shù)明顯下降。同時(shí)通過(guò)長(zhǎng)時(shí)間高溫老化可以使元器件的缺陷、焊接和裝配等生產(chǎn)過(guò)程中存在的隱患提前暴露出來(lái)。對(duì)于大功率電源模塊的應(yīng)力設(shè)計(jì)，重點(diǎn)關(guān)注場(chǎng)效應(yīng)管(MOS管)、二極管、變壓器、功率電感、電解電容、限流電阻等。保證全電壓范圍內(nèi)在穩(wěn)態(tài)、瞬態(tài)、短路等各種極限條件下都能有足夠的降額，以保障產(chǎn)品的可靠性。山西大功率電源模塊報(bào)價(jià)大功率電源模塊隔離就是將輸出與輸入進(jìn)行電路上的分離。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="山西大功率電源模塊報(bào)價(jià),大功率電源模塊" src="https://tyunfile.71360.com/UploadFile/shdsdz/637393060363069764/9500531.png"></div><p style="text-indent:25px">由于某些大功率電源模塊內(nèi)部的電子元器件的電壓余量設(shè)計(jì)不夠，在輸入電壓過(guò)高時(shí)，造成模塊損壞，甚至燒毀，這是就需要我們?cè)?*做一些保護(hù)，哪些常見(jiàn)原因易造成輸入電壓偏高呢？在大功率電源模塊輸入端進(jìn)行熱插拔上電，此時(shí)其電壓尖峰及浪涌電流都較高，抗壓差的模塊會(huì)被瞬間擊穿損壞；輸出端負(fù)載過(guò)輕，輕于10%的額定負(fù)載，對(duì)一些非線性穩(wěn)壓的電源產(chǎn)品來(lái)說(shuō)，模塊不一定會(huì)損壞，但會(huì)影響后級(jí)的一些性能，如效率偏低，模塊偏熱等；前級(jí)供電電源的電壓沖擊導(dǎo)致輸入電壓偏高或產(chǎn)生干擾電壓，電磁兼容也較容易造成輸入電壓高，如雷擊浪涌、群脈沖。</p><p style="text-indent:25px">在高溫情況下大功率電源模塊應(yīng)降額使用，可以選擇30%-40%以上的功率降額。對(duì)于高溫條件應(yīng)用，或散熱不好的條件，在同等功率條件下，優(yōu)先選用體積大的模塊；對(duì)于長(zhǎng)期工作在 70℃以上的場(chǎng)合，請(qǐng)向我術(shù)服務(wù)人員咨詢(xún)以選取適合高溫環(huán)境工作的大功率電源模塊。大功率電源模塊需預(yù)留足夠的空間來(lái)考慮其散熱輻射對(duì)信號(hào)采集干擾的影響，以及模塊電磁干擾對(duì)于其它電路部件性能的影響，所以要兼顧體積、成本，同時(shí)也要綜合考慮模塊的可靠性?？傊M量采用標(biāo)準(zhǔn)模塊規(guī)格，可以達(dá)到滿(mǎn)足成本較低、技術(shù)成熟、開(kāi)發(fā)阻力小、節(jié)約開(kāi)發(fā)時(shí)間的目的。大功率電源模塊的規(guī)律密度越來(lái)越大，轉(zhuǎn)換的效率也越來(lái)越高。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="山西大功率電源模塊報(bào)價(jià),大功率電源模塊" src="https://tyunfile.71360.com/UploadFile/shdsdz/637393060799657446/5364070.png"></div><p style="text-indent:25px">有關(guān)統(tǒng)計(jì)數(shù)據(jù)表明，大功率電源模塊在預(yù)期有效時(shí)間內(nèi)失效的主要原因是外部故障條件下?lián)p壞。而正常使用失效的機(jī)率是很低的。因此延長(zhǎng)模塊電源壽命、提高系統(tǒng)可靠性的重要一環(huán)是選擇保護(hù)功能完善的產(chǎn)品，即在模塊電源外部電路出現(xiàn)故障時(shí)模塊電源能夠自動(dòng)進(jìn)入保護(hù)狀態(tài)而不至于長(zhǎng)久失效，外部故障消失后應(yīng)能自動(dòng)恢復(fù)正常。大功率電源模塊的保護(hù)功能應(yīng)至少包括輸入過(guò)壓、欠壓、軟啟動(dòng)保護(hù)；輸出過(guò)壓、過(guò)流、短路保護(hù)，大功率產(chǎn)品還應(yīng)有過(guò)溫保護(hù)等。一般建議實(shí)際使用功率是模塊電源額定功率的30～80%為宜（具體比例大小還與其他因素有關(guān)，后面將會(huì)提到。），這個(gè)功率范圍內(nèi)模塊電源各方面性能發(fā)揮都比較充分而且穩(wěn)定可靠。負(fù)載太輕造成資源浪費(fèi)，太重則對(duì)溫升、可靠性等不利。所有模塊電源均有一定的過(guò)載能力，例如某產(chǎn)品可達(dá) 110～120%，但是仍不建議長(zhǎng)時(shí)間工作在過(guò)載條件下，畢竟這是一種短時(shí)應(yīng)急之計(jì)。大功率電源模塊每一模塊的設(shè)計(jì)及測(cè)試都按照標(biāo)準(zhǔn)性能的規(guī)定進(jìn)行。靜安區(qū)大功率電源模塊廠家定制</p><p style="text-indent:25px">大功率電源模塊在電壓轉(zhuǎn)換過(guò)程中有能量損耗，產(chǎn)生熱能導(dǎo)致模塊發(fā)熱。山西大功率電源模塊報(bào)價(jià)</p><p style="text-indent:25px">大功率電源模塊啟動(dòng)困難，首先是破壞力較小的情況——大功率電源模塊在啟動(dòng)中出現(xiàn)啟動(dòng)困難，甚至啟動(dòng)不了。大家在使用大功率電源模塊過(guò)程中可能會(huì)出現(xiàn)電源模塊輸出端電壓正常，輸出端就是沒(méi)有任何輸出，電源模塊也無(wú)損壞，是什么原因呢？具體原因如下所示：外接電容過(guò)大；容性負(fù)載過(guò)大；負(fù)載電流過(guò)大；輸入電源功率不夠。針對(duì)這一類(lèi)問(wèn)題，可以通過(guò)調(diào)整輸出端的電容以及負(fù)載或調(diào)整輸入端的功率進(jìn)行改善，具體如下所示：外接電容過(guò)大，在電源模塊啟動(dòng)時(shí)向其充電較長(zhǎng)時(shí)間，難以啟動(dòng)，需要選擇合適的容性負(fù)載；容性負(fù)載過(guò)大時(shí)需可先串聯(lián)一個(gè)合適的電感；輸出負(fù)載過(guò)重是會(huì)造成啟動(dòng)時(shí)間延長(zhǎng)，選擇合適負(fù)載；換用功率更大的輸入電源。山西大功率電源模塊報(bào)價(jià)</p></p><br /><p>文章來(lái)源地址: http://www.cdcfah.com/cp/3105773.html</p></div></div></div></div></div><div id="oqif3f2" class="page-right twoColRt"><div id="xb7hj23" class="box01 margin10 clearfix"><h3><a href="http://www.cdcfah.com/cp/">猜你喜歡</a></h3><div id="kj8qs7v" class="recomPic likePro"><a 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