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class="bigimg"><div><p class="pic"><img src="https://tyunfile.71360.com/UploadFile/shdsdz/637393060391019354/5564291.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div><div id="bqkw3q3" class="smallimg"><div><p class="pic"><img src="https://tyunfile.71360.com/UploadFile/shdsdz/637393060391019354/5564291.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div></div><div id="7lxujvx" 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>閔行區(qū)大功率電源模塊廠(chǎng)家直銷(xiāo),大功率電源模塊</p><p><span>***更新：</span>2020-12-31 01:16:17</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="87nfh83" 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(huà): </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(xiàn)] <a rel="nofollow"> [加為商友] </a><a rel="nofollow"> [發(fā)送信件] </a></p></div></div><div id="jcwdp74" class="page-proshow02"><p class="title">詳細(xì)說(shuō)明</p><div id="2v2hikc" class="box"><p><p style="text-indent:25px">在生產(chǎn)大功率電源模塊過(guò)程中，有些問(wèn)題是我們?nèi)庋蹮o(wú)法看見(jiàn)的，如來(lái)料的元器件好壞、虛焊等問(wèn)題，閔行區(qū)大功率電源模塊廠(chǎng)家直銷(xiāo)。雖然在生產(chǎn)線(xiàn)剛出來(lái)的大功率電源模塊可以直接使用，但是很多時(shí)候產(chǎn)品到客戶(hù)手上才發(fā)現(xiàn)用不了。這是因?yàn)樵谏a(chǎn)過(guò)程中只是簡(jiǎn)單的通電測(cè)試，并沒(méi)有做長(zhǎng)時(shí)間不同環(huán)境的通電測(cè)試。大功率電源模塊的老化方式主要有常溫帶負(fù)載老化和高溫通電老化測(cè)試倆種，常用的是高溫老化。通過(guò)高溫老化可以使產(chǎn)品元件的缺陷或質(zhì)量不良暴露出來(lái)，從而提高了產(chǎn)品的穩(wěn)定性和可靠性。大功率電源模塊的高溫老化是指仿真產(chǎn)品的高溫使用環(huán)境，老化測(cè)試時(shí)間一般要求為12-48小時(shí)。高溫老化流程有倆種，一種是設(shè)置在高溫環(huán)境中，通電老化。一種是在高溫環(huán)境下，閔行區(qū)大功率電源模塊廠(chǎng)家直銷(xiāo)，用更惡劣的環(huán)境條件沖擊大功率電源模塊，閔行區(qū)大功率電源模塊廠(chǎng)家直銷(xiāo)。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。閔行區(qū)大功率電源模塊廠(chǎng)家直銷(xiāo)</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="閔行區(qū)大功率電源模塊廠(chǎng)家直銷(xiāo),大功率電源模塊" src="https://tyunfile.71360.com/UploadFile/shdsdz/637393060391019354/5564291.png"></div><p style="text-indent:25px">在較近幾年中，大功率電源模塊產(chǎn)品在通訊通信領(lǐng)域的應(yīng)用范圍得到了較大的拓展，新產(chǎn)品的研發(fā)速度也明顯加快?，F(xiàn)在我們將會(huì)分享一種大功率開(kāi)關(guān)電源的設(shè)計(jì)方案，本方案采用的是采用半橋式功率逆變電路，大功率電源模塊主體部分的設(shè)計(jì)相對(duì)簡(jiǎn)單，希望能夠?qū)Ω魑还こ處煹难邪l(fā)設(shè)計(jì)工作有所幫助。這種基于SG3525的半橋式大功率開(kāi)關(guān)電源的電路系統(tǒng)設(shè)計(jì)，在該電路系統(tǒng)中，三相交流電經(jīng)EMI濾波器濾波，有效減少了交流電源輸入的電磁干擾，同時(shí)防止開(kāi)關(guān)電源產(chǎn)生的諧波串?dāng)_到輸入電源端。再經(jīng)過(guò)橋式整流電路、濾波電路變成直流電壓加在P、N兩點(diǎn)間。P、N之間接入一個(gè)小容量、高耐壓的無(wú)感電容，起到高頻濾波的作用。山西大功率電源模塊價(jià)格便宜嗎大功率電源模塊包括通電測(cè)試，以便剔除不合規(guī)格的產(chǎn)品。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="閔行區(qū)大功率電源模塊廠(chǎng)家直銷(xiāo),大功率電源模塊" src="https://tyunfile.71360.com/UploadFile/shdsdz/637393060799657446/5364070.png"></div><p style="text-indent:25px">大功率電源模塊常見(jiàn)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(guò)沖幅度變大，超出規(guī)定范圍。重載或滿(mǎn)載工作時(shí)輸出電壓明顯降低。高溫老化損壞，模塊沒(méi)有輸出。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(mǎn)足性能參數(shù)要求。</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。開(kāi)關(guān)電源是較大的EMC干擾源。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="閔行區(qū)大功率電源模塊廠(chǎng)家直銷(xiāo),大功率電源模塊" src="https://tyunfile.71360.com/UploadFile/shdsdz/637393060385120850/9021330.png"></div><p style="text-indent:25px">一種大功率電源模塊老煉方法，包括步驟:獲取大功率電源模塊殼溫工作溫度范圍，設(shè)置散熱裝置；確定大功率電源模塊殼溫測(cè)量點(diǎn)定位；確定并根據(jù)大功率電源模塊測(cè)量參考溫度的不同，進(jìn)行分組；對(duì)每組大功率電源模塊進(jìn)行老煉試驗(yàn)，根據(jù)試驗(yàn)結(jié)果，確定散熱裝置型號(hào)。在一些實(shí)施例中，所述散熱裝置采用熱傳導(dǎo)和風(fēng)冷結(jié)合的方式;其中，所述的熱傳導(dǎo)通過(guò)散熱片接觸大功率電源模塊自帶散熱基板來(lái)傳導(dǎo)熱量并且根據(jù)不同型號(hào)規(guī)格電源模塊選擇對(duì)應(yīng)的不同尺寸的散熱片作為仿真散熱片；另外，所述的風(fēng)冷通過(guò)調(diào)節(jié)風(fēng)扇風(fēng)速來(lái)實(shí)現(xiàn)對(duì)大功率電源模塊的散熱。在一些實(shí)施例中，所述確定大功率電源模塊殼溫測(cè)量點(diǎn)定位。大功率電源模塊安全隔離：強(qiáng)電弱電隔離＼IGBT隔離驅(qū)動(dòng)＼浪涌隔離保護(hù)＼雷電隔離保護(hù)。山西大功率電源模塊價(jià)格便宜嗎</p><p style="text-indent:25px">大功率電源模塊還應(yīng)有過(guò)溫保護(hù)的功能。閔行區(qū)大功率電源模塊廠(chǎng)家直銷(xiāo)</p><p style="text-indent:25px">據(jù)不完全統(tǒng)計(jì)，我國(guó)目前有電源生產(chǎn)廠(chǎng)家5000多家，而模塊電源生產(chǎn)廠(chǎng)家約幾百家。但國(guó)內(nèi)模塊電源技術(shù)含量不高，市場(chǎng)占有率低，尤其是在中大功率領(lǐng)域，模塊電源效率低，體積大，不能滿(mǎn)足要求。前瞻根據(jù)模塊電源下游需求，2017年模塊電源的需求量約為63.9億元，未來(lái)幾年我國(guó)模塊電源市場(chǎng)銷(xiāo)售規(guī)模將以12%-18%增長(zhǎng)速度發(fā)展。我國(guó)有模塊電源生產(chǎn)廠(chǎng)家約幾百家，以私營(yíng)企業(yè)、小型企業(yè)為主，整體競(jìng)爭(zhēng)力水平較低，行業(yè)集中度較低，市場(chǎng)排名**家廠(chǎng)商的市場(chǎng)占有率不到60%，且多數(shù)是國(guó)際品牌，本土品牌較少。尤其在中低端模塊電源產(chǎn)品市場(chǎng)，行業(yè)基本呈現(xiàn)完全競(jìng)爭(zhēng)狀況，而在較好產(chǎn)品市場(chǎng)，由于相應(yīng)的技術(shù)、工藝等的制約，市場(chǎng)集中度較高，市場(chǎng)份額主要被**的國(guó)際跨國(guó)公司占領(lǐng)。閔行區(qū)大功率電源模塊廠(chǎng)家直銷(xiāo)</p><p style="text-indent:25px">上海多商電子有限公司致力于電工電氣，是一家生產(chǎn)型的公司。公司自成立以來(lái)，以質(zhì)量為發(fā)展，讓匠心彌散在每個(gè)細(xì)節(jié)，公司旗下充電電源，ACDC電源模塊，DCDC電源模塊，大功率電源模塊深受客戶(hù)的喜愛(ài)。公司將不斷增強(qiáng)企業(yè)重點(diǎn)競(jìng)爭(zhēng)力，努力學(xué)習(xí)行業(yè)知識(shí)，遵守行業(yè)規(guī)范，植根于電工電氣行業(yè)的發(fā)展。在社會(huì)各界的鼎力支持下，持續(xù)創(chuàng)新，不斷鑄造***服務(wù)體驗(yàn)，為客戶(hù)成功提供堅(jiān)實(shí)有力的支持。</p></p><br /><p>文章來(lái)源地址: http://www.cdcfah.com/cp/2633936.html</p></div></div></div></div></div><div id="9oiu2gi" class="page-right twoColRt"><div id="hm3hd39" class="box01 margin10 clearfix"><h3><a href="http://www.cdcfah.com/cp/">猜你喜歡</a></h3><div id="enrikrt" 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" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></div><p>福建ZF配件哪家強(qiáng) 信息推薦自業(yè)物資供應(yīng)</p></a></div><div 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