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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>上海市</p><p><span>包裝要求：</span><span style="color: #f30;"></span></p><p><span>產(chǎn)品關(guān)鍵詞：</span>浦東新區(qū)DCDC電源模塊生產(chǎn)廠商,DCDC電源模塊</p><p><span>***更新：</span>2021-01-25 11:20:41</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="dh3z8uz" 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="akhog37" class="page-proshow02"><p class="title">詳細(xì)說(shuō)明</p><div id="wkhzwdf" class="box"><p><p style="text-indent:25px">電源模塊在生活中充當(dāng)著重要的角色之一，基本上所有的產(chǎn)品不能少了電。所以，電源模塊的使用是非常普遍的。很多家電用了很長(zhǎng)時(shí)間都沒(méi)有壞，說(shuō)明內(nèi)里的電源模塊是可靠的?？煽慷雀叩碾娫茨K是什么樣子的，使用高質(zhì)量的部件。其實(shí)為什么有些元器件便宜，有些是貴，區(qū)別在于可靠性。選擇器件參數(shù)要留出空間，比如耐壓，不能假設(shè)市場(chǎng)電壓是220v，一般來(lái)說(shuō)我們至少應(yīng)該考慮電壓可能高達(dá)265v，甚至更高。電路保護(hù)器件必須設(shè)計(jì)，因?yàn)闆](méi)有電路保護(hù)裝置就相當(dāng)有危險(xiǎn)性，也就可靠度不高。好一點(diǎn)的電路板設(shè)計(jì)還應(yīng)該可以涂上三防漆，所謂三防漆就是一個(gè)防潮、防鹽霧、防霉，浦東新區(qū)DCDC電源模塊生產(chǎn)廠商，再加上沒(méi)有防塵、防漏電，更好的還能進(jìn)行防水（IP67）。電源模塊需要CE，UL認(rèn)證，浦東新區(qū)DCDC電源模塊生產(chǎn)廠商，有的甚至ROHS認(rèn)證（即無(wú)鉛認(rèn)證），浦東新區(qū)DCDC電源模塊生產(chǎn)廠商，確保產(chǎn)品符合認(rèn)證要求。電源模塊只需配上少量分立元件，即可獲得電源。浦東新區(qū)DCDC電源模塊生產(chǎn)廠商</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="浦東新區(qū)DCDC電源模塊生產(chǎn)廠商,DCDC電源模塊" src="https://tyunfile.71360.com/UploadFile/shdsdz/637393056924431868/869235.png"></div><p style="text-indent:25px">DC-DC模塊電源紋波指標(biāo)是一項(xiàng)很重要的參數(shù)。干凈的電源是數(shù)字電路穩(wěn)定工作的前提，也是模擬器件的各項(xiàng)參數(shù)的重要保障。為了確定我們的電源干凈，必須對(duì)偉仕DC-DC模塊的輸出紋波進(jìn)行測(cè)量。但很多人測(cè)量得到的紋波值動(dòng)輒上百mV，甚至幾百mV，遠(yuǎn)遠(yuǎn)比器件手冊(cè)提供的較大紋波值大，這主要是測(cè)量方法的不正確造成的。正確的測(cè)量方法：限制示波器帶寬為20MHz(大多中低端示波器檔位限制在20MHz，較好產(chǎn)品還有200MHz帶寬限制的選擇)，目的是避免數(shù)字電路的高頻噪聲影響紋波測(cè)量，盡量保證測(cè)量的準(zhǔn)確性;設(shè)置耦合方式為交流耦合，方便測(cè)量(以更小檔位來(lái)仔細(xì)觀測(cè)紋波，不關(guān)心直流電平)。松江區(qū)DCDC電源模塊廠家直銷(xiāo)電源模塊是可以直接貼裝在印刷電路板上的電源供應(yīng)器。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="浦東新區(qū)DCDC電源模塊生產(chǎn)廠商,DCDC電源模塊" src="https://tyunfile.71360.com/UploadFile/shdsdz/637393057031542665/4786685.png"></div><p style="text-indent:25px">模塊電源不允許長(zhǎng)期處于滿負(fù)荷工作狀態(tài)。線性電源的使用率，應(yīng)控制在60％以內(nèi)；開(kāi)關(guān)電源的使用率．應(yīng)控制在80％以內(nèi)。否則有可能造成模塊電源人為的早期失效。對(duì)于某些模塊電源，廠家出廠時(shí)在于可調(diào)端子(ADJ)間接有固定電阻。使用時(shí)須用戶自配相應(yīng)阻值的電位器，以取代該固定電阻。但要注意，當(dāng)可調(diào)端子間處于開(kāi)路狀態(tài)時(shí)，決不允許加載。為了充分散熱，模塊電源宜安裝在空氣對(duì)流較好的位置。需用散熱器的模塊電源，其背板必須均勻涂抹導(dǎo)熱硅脂，并和散熱器緊密貼合，并加以緊固。一般要求線性電源工作電流在4 A以上，或開(kāi)關(guān)電源工作電流在7 A以上時(shí)．應(yīng)加裝強(qiáng)制風(fēng)冷。此外，在模塊電源外殼上不允許放置其他物品。模塊電源一般適用于以阻性為主的負(fù)載，若需要應(yīng)用在以容性為主或感性為主的負(fù)載時(shí)。應(yīng)事先協(xié)議訂貨。</p><p style="text-indent:25px">AC/DC變換是將交流變換為直流，其功率流向可以是雙向的，功率流由電源流向負(fù)載的稱為"整流"，功率流由負(fù)載返回電源的稱為"有源逆變"。AC/DC變換器輸入為50/60Hz的交流電，因必須經(jīng)整流、濾波，因此體積相對(duì)較大的濾波電容器是必不可少的，同時(shí)因遇到安全標(biāo)準(zhǔn)(如UL、CCEE等)及EMC指令的限制(如IEC、、FCC、CSA)，交流輸入側(cè)必須加EMC濾波及使用符合安全標(biāo)準(zhǔn)的元件，這樣就限制AC/DC電源體積的小型化，另外，由于內(nèi)部的高頻、高壓、大電流開(kāi)關(guān)動(dòng)作，使得解決EMC電磁兼容問(wèn)題難度加大，也就對(duì)內(nèi)部高密度安裝電路設(shè)計(jì)提出了很高的要求，由于同樣的原因，高電壓、大電流開(kāi)關(guān)使得電源工作損耗增大，限制了AC/DC變換器模塊化的進(jìn)程，因此必須采用電源系統(tǒng)優(yōu)化設(shè)計(jì)方法才能使其工作效率達(dá)到一定的滿意程度。分布供電方式具有節(jié)能、可靠、經(jīng)濟(jì)和維護(hù)方便等優(yōu)點(diǎn)。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="浦東新區(qū)DCDC電源模塊生產(chǎn)廠商,DCDC電源模塊" src="https://tyunfile.71360.com/UploadFile/shdsdz/637393056942176472/3982407.png"></div><p style="text-indent:25px">模塊電源的開(kāi)關(guān)操作，是通過(guò)REM端進(jìn)行的。一般控制方式有兩種。 REM與-UIN(參考地)相連，關(guān)斷，要求UREF<0．4 V。REM懸空或與+UIN相連，模塊工作，要求UREM>1 V。 REM與UIN相連，關(guān)斷，要求UREM<0．4 V。REM與+UIN相連，模塊工作，要求UREM>l V。REM懸空，關(guān)斷，即所謂“懸空關(guān)斷”(-R)。如果控制要與輸入端隔離．則可以使用光電耦合器作為傳遞控制信號(hào)。模塊電源的組合：并聯(lián)擴(kuò)容將相同模塊輸出端并聯(lián)，可使輸出能力增強(qiáng)。但并聯(lián)模塊的輸出電壓要調(diào)整得比較一致，以保證相對(duì)均流，同時(shí)避免不必要的振蕩。對(duì)有較大電流輸出的模塊．還可以仔細(xì)設(shè)計(jì)引線電阻，以達(dá)到均流效果。用這種方法并聯(lián)的模塊，不宜超過(guò)2個(gè)。同時(shí)，如果其中一塊模塊輸出有故障，整個(gè)系統(tǒng)都將不能正常工作。一般功率較大的宜選擇開(kāi)關(guān)電源，功率較小的選擇線性電源。普陀區(qū)DCDC電源模塊生產(chǎn)線</p><p style="text-indent:25px">模塊電源具有比分立元件電源靈活、高效、可靠等明顯優(yōu)勢(shì)。浦東新區(qū)DCDC電源模塊生產(chǎn)廠商</p><p style="text-indent:25px">設(shè)法降低模塊電源的溫升，模塊內(nèi)部器件的工作溫度的高低直接影響模塊電源的壽命，器件溫度越低模塊壽命越長(zhǎng)。在一定的工作條件下，模塊電源的損耗是一定的，但是可以通過(guò)改善模塊電源的散熱條件來(lái)降低其溫升，從而有效的延長(zhǎng)其使用壽命。比如：50W以上的模塊電源必須安裝散熱器，散熱器的表面積越大越有利于散熱，且散熱器的安裝方向應(yīng)盡量有利于空氣的自然對(duì)流，功率在150W以上除安裝散熱器以外還可以加裝扇強(qiáng)制風(fēng)冷。此外在環(huán)境溫度較高或空氣流通條件較差的地方模塊須降額使用以減小功耗從而降低溫升，延長(zhǎng)使用壽命。浦東新區(qū)DCDC電源模塊生產(chǎn)廠商</p></p><br /><p>文章來(lái)源地址: http://m.cdcfah.com/cp/3005769.html</p></div></div></div></div></div><div id="3b3cwik" 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