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href="http://www.cdcfah.com/cp/third-dianyuan_qtdy/">其他電源</a>?上海大功率電源模塊哪家便宜值得信賴上海多商電子供應(yīng)</p><div id="bopdgmi" class="leftbox clearfix"><h1>上海大功率電源模塊哪家便宜值得信賴上海多商電子供應(yīng)</h1><div id="sv2jyef" class="proBig"><div id="voabhdf" class="bigimg"><div><p class="pic"><img src="https://tyunfile.71360.com/UploadFile/shdsdz/637393060763231217/4135973.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div><div id="fopgh2c" class="smallimg"><div><p class="pic"><img src="https://tyunfile.71360.com/UploadFile/shdsdz/637393060763231217/4135973.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div></div><div id="89krnoz" 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>上海大功率電源模塊哪家便宜,大功率電源模塊</p><p><span>***更新：</span>2021-01-22 11:19:52</p><p><span id="click" >瀏覽次數(shù)：12次</span></p><a rel="nofollow" class="button">聯(lián)系我們</a></div></div><div id="wj2w82b" 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="hkwievr" class="page-proshow02"><p class="title">詳細(xì)說明</p><div id="zcyul7f" class="box"><p><p style="text-indent:25px">大功率電源模塊常見的低溫和高溫不良的現(xiàn)象有：工作振蕩，輸出電壓紋波和噪聲變大，頻率發(fā)生改變，嚴(yán)重的甚至輸出電壓跳變，模塊嘯叫。啟動(dòng)不良，如啟動(dòng)時(shí)輸出電壓升上波形有明顯掉溝，輸出電壓不穩(wěn)定，甚至模塊完全啟動(dòng)失效。帶容性負(fù)載能力減弱，無(wú)法帶較大容性負(fù)載啟動(dòng)。啟動(dòng)時(shí)輸出電壓過沖幅度變大，超出規(guī)定范圍。重載或滿載工作時(shí)輸出電壓明顯降低。高溫老化損壞，模塊沒有輸出，上海大功率電源模塊哪家便宜，上海大功率電源模塊哪家便宜，上海大功率電源模塊哪家便宜。所以，可靠性高的大功率電源模塊必須保證在高低溫等極端條件下工作正常，滿足性能參數(shù)要求。大功率電源模塊都不是線性電源類型，都是開關(guān)電源。上海大功率電源模塊哪家便宜</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="上海大功率電源模塊哪家便宜,大功率電源模塊" src="https://tyunfile.71360.com/UploadFile/shdsdz/637393060763231217/4135973.png"></div><p style="text-indent:25px">大功率電源模塊已成為搜索熱詞，主要是因?yàn)榇蠊β孰娫茨K具有防潮、抗震、阻燃、無(wú)需散熱片、高效可靠等優(yōu)良特性，已被大多數(shù)硬件工程師所選擇。在大量使用電源模塊時(shí)，大家往往很容易忽視一些小的使用細(xì)節(jié)，從而導(dǎo)致耽誤研發(fā)周期甚至損壞模塊。大功率電源模塊性能參數(shù)中隔離耐壓是一項(xiàng)比較重要的參數(shù)，我們除了需要選擇合適耐壓值的大功率電源模塊，還需要關(guān)注電源底板的電氣間隙，以滿足之后產(chǎn)品的電氣隔離參數(shù)。標(biāo)準(zhǔn)的大功率電源模塊數(shù)據(jù)手冊(cè)，都有EMC特性一欄，并已標(biāo)注相應(yīng)的等級(jí)及參考電路。客戶可根據(jù)自己實(shí)際的EMS等級(jí)要求來設(shè)計(jì)相應(yīng)電路，避免由于裸機(jī)等級(jí)滿足不了要求而重復(fù)改板，相反導(dǎo)致多加器件成本增加。靜安區(qū)大功率電源模塊制造商大功率電源模塊的規(guī)律密度越來越大，轉(zhuǎn)換的效率也越來越高。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="上海大功率電源模塊哪家便宜,大功率電源模塊" src="https://tyunfile.71360.com/UploadFile/shdsdz/637393060769491026/1799904.png"></div><p style="text-indent:25px">大功率電源模塊幾大指標(biāo)：功率 P=UI,是輸出電壓和輸出電流的乘積。輸入電壓分交流輸入和直流輸入2種。輸出電壓一般是直流輸出，但也有交流輸出的。隔離電壓：隔離就是將輸出與輸入進(jìn)行電路上的分離。有以下幾個(gè)作用：一，電流變換；二，為了防止輸入輸出相互干擾；三，輸入輸出電路的信號(hào)特性相差太大，比如用弱信號(hào)控制強(qiáng)電的設(shè)備。封裝尺寸有插針，貼片的，和螺旋。輸出有單路輸出，雙路輸出及多路輸出。電源設(shè)計(jì)中即使是普通的直流到直流開關(guān)轉(zhuǎn)換器的設(shè)計(jì)都會(huì)出現(xiàn)一系列問題，尤其在大功率電源設(shè)計(jì)中更是如此。除功能性考慮以外，工程師必須保證設(shè)計(jì)的魯棒性，以符合成本目標(biāo)要求以及熱性能和空間限制，當(dāng)然同時(shí)還要保證設(shè)計(jì)的進(jìn)度。</p><p style="text-indent:25px">大功率電源模塊降額設(shè)計(jì)是將元器件進(jìn)行降額使用，就是使電子元器件的工作應(yīng)力適當(dāng)?shù)陀谄湟?guī)定的額定值，降額使用的器件可延緩和減小其退化，提高了器件的可靠性，從而也提高了模塊的可靠性。電子元器件的故障率對(duì)電壓應(yīng)力、電流應(yīng)力和溫度應(yīng)力比較敏感，所以降額設(shè)計(jì)主要也是針對(duì)這三個(gè)方面。電子元器件的降額等級(jí)可以參考《國(guó)家**用標(biāo)準(zhǔn)——元器件降額準(zhǔn)則GJB/Z35-93》，一般可分成三個(gè)降額等級(jí)： I 級(jí)降額是較大的降額，適用于設(shè)備故障將會(huì)危及安全，導(dǎo)致任務(wù)失敗和造成嚴(yán)重經(jīng)濟(jì)損失的情況。Ⅱ級(jí)降額：工作應(yīng)力減小對(duì)元器件可靠性增長(zhǎng)有明顯效益，適用于設(shè)備故障會(huì)使工作任務(wù)降級(jí)，或需支付不合理的維修費(fèi)用。 Ⅲ級(jí)降額：Ⅲ級(jí)降額是較小的降額，相對(duì)來說元器件成本也較低。適用于設(shè)備故障對(duì)工作任務(wù)的完成只有小的影響，或可迅速、經(jīng)濟(jì)地加以修復(fù)。大功率電源模塊噪聲隔離：（模擬電路與數(shù)字電路隔離、強(qiáng)弱信號(hào)隔離）。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="上海大功率電源模塊哪家便宜,大功率電源模塊" src="https://tyunfile.71360.com/UploadFile/shdsdz/637393060799657446/5364070.png"></div><p style="text-indent:25px">在進(jìn)行大功率電源的并聯(lián)均流過程中，工程師可以通過改變電源的輸出特性或者輸出電壓幅值的辦法，來達(dá)成多個(gè)電源模塊的均流輸出，這也是目前均流方法的基本出發(fā)點(diǎn),我們將會(huì)為您提供一種比較易于操作的設(shè)計(jì)方案，幫助工程師輕松完成多個(gè)大功率電源模塊的并聯(lián)均流輸出。目前國(guó)內(nèi)大部分的模塊并聯(lián)輸出設(shè)計(jì)，都使用了有源法。這種方法采用均流母線方式，各模塊之間存在相互關(guān)聯(lián)，通過取樣各個(gè)模塊輸出電流進(jìn)行比較進(jìn)而調(diào)整各個(gè)模塊輸出電壓的辦法實(shí)現(xiàn)均流，具有效率高的優(yōu)點(diǎn)。噪聲是衡量電源模塊優(yōu)劣的一大關(guān)鍵指標(biāo)。上海大功率電源模塊哪家便宜</p><p style="text-indent:25px">線性電源主要包括工頻變壓器、大功率整流回路、輸出整流濾波器、控制電路、保護(hù)電路等。上海大功率電源模塊哪家便宜</p><p style="text-indent:25px">散熱器翅片厚度的選擇也同樣會(huì)影響大功率電源模塊的散熱性能。在正常運(yùn)行的情況下，由于導(dǎo)熱主要是沿著電源模塊的散熱器翅片縱向方向傳遞，因而翅片的厚度對(duì)于散熱器熱性能沒有太大的影響，翅片厚度的增加并沒有使熱源結(jié)溫降低很多，反而增加了散熱器的重量。為了保證散熱器翅片的硬度且易于加工，翅片硬度不能太薄，工程上一般會(huì)將散熱器翅片的厚度規(guī)定在≥1mm左右。散熱器翅片個(gè)數(shù)也同樣會(huì)影響到模塊電源的散熱性能。在模塊正常工作的前提下，隨著翅片數(shù)目的增多，熱源結(jié)溫會(huì)有所降低。但是超過某一數(shù)值之后，隨著翅片的增多，器件結(jié)溫不但沒有明顯變化反而散熱器的重量會(huì)明顯增加。同時(shí)，翅片數(shù)目增加有時(shí)還要考慮器件安裝的問題，有的器件安裝在散熱器兩翅片之間，如果翅片數(shù)太多，器件是不容易安裝在散熱器上的，因而工程師千萬(wàn)不能盲目增加翅片的數(shù)目。上海大功率電源模塊哪家便宜</p></p><br /><p>文章來源地址: http://www.cdcfah.com/cp/2961723.html</p></div></div></div></div></div><div id="ybhdjf3" class="page-right twoColRt"><div id="qduie7u" class="box01 margin10 clearfix"><h3><a href="http://www.cdcfah.com/cp/">猜你喜歡</a></h3><div id="ynea3wg" class="recomPic likePro"><a href="http://www.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(qiáng) 信息推薦自業(yè)物資供應(yīng)" class="vcenter" 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