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id="oi7bikw" class="proBig"><div id="lqka7bn" class="bigimg"><div><p class="pic"><img src="https://tyunfile.71360.com/UploadFile/shdsdz/637393060379653267/3899269.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div><div id="y3s7h43" class="smallimg"><div><p class="pic"><img src="https://tyunfile.71360.com/UploadFile/shdsdz/637393060379653267/3899269.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div></div><div id="gubipbi" 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>奉賢區(qū)大功率電源模塊批發(fā),大功率電源模塊</p><p><span>***更新：</span>2021-01-01 07:17:52</p><p><span id="click" >瀏覽次數(shù)：5次</span></p><a rel="nofollow" class="button">聯(lián)系我們</a></div></div><div id="8srd888" 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4號樓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="1eqifmy" class="page-proshow02"><p class="title">詳細(xì)說明</p><div id="ycjlikw" class="box"><p><p style="text-indent:25px">由于電源模塊越趨于小型化，功率密度相應(yīng)越來越高，大功率電源模塊有關(guān)熱設(shè)計(jì)方面的問題尤其突出。特別是對使用有電解電容的電源模塊，高溫會(huì)使電解電容的電解液加速消耗，有效減少電解電容的壽命。高溫會(huì)使元器件材料加速老化，例如使得變壓器漆包線的絕緣特性降低，導(dǎo)致絕緣耐壓不良甚至造成匝間短路。因此好的熱設(shè)計(jì)不僅可延長大功率電源模塊和其周圍元器件的使用壽命，還可使整個(gè)產(chǎn)品發(fā)熱均勻，減少故障的發(fā)生，奉賢區(qū)大功率電源模塊批發(fā)。所以除了基本性能參數(shù)測試，奉賢區(qū)大功率電源模塊批發(fā)，多方面的高低溫測試，電應(yīng)力和熱應(yīng)力測試，奉賢區(qū)大功率電源模塊批發(fā)，保證足夠的降額設(shè)計(jì)要求，并通過長時(shí)間的老化測試，才可以判斷大功率電源模塊是否安全可靠。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。奉賢區(qū)大功率電源模塊批發(fā)</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="奉賢區(qū)大功率電源模塊批發(fā),大功率電源模塊" src="https://tyunfile.71360.com/UploadFile/shdsdz/637393060379653267/3899269.png"></div><p style="text-indent:25px">為什么很多設(shè)備功率要求不大，卻選擇大功率的電源模塊?電源檢測是綜合電源模塊在較大功率各式各樣負(fù)荷的具體表現(xiàn)，這包含了輕負(fù)荷及載滿等檢驗(yàn)。大功率電源模塊比低輸出功率的劃得來嗎?價(jià)格的差距是由設(shè)計(jì)、結(jié)構(gòu)、用材等特性上的不一樣所影響的，一些用材好、效率性高的、功效好的模塊電源必然是會(huì)比差點(diǎn)兒的貴一點(diǎn)兒。由于效率較低，溫度較高，將會(huì)導(dǎo)致電源模塊損壞或使用壽命大幅度減少，一般為了正常運(yùn)用，推薦另加散熱。模塊電源效率越高，體現(xiàn)能量傳輸?shù)膿p耗越小，而損耗主要的表達(dá)方式是發(fā)熱，發(fā)熱小的操作溫度低。一般輸出工作頻率越低，其體積越大，發(fā)熱量越大，輸出紋波越大。在參數(shù)相近的情況下，電源模塊體積越大，散熱特性越高，工作溫度越低。山東大功率電源模塊大致上大功率電源可分為線性電源和開關(guān)電源兩類。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="奉賢區(qū)大功率電源模塊批發(fā),大功率電源模塊" src="https://tyunfile.71360.com/UploadFile/shdsdz/637393060769491026/1799904.png"></div><p style="text-indent:25px">為了完成多個(gè)大功率電源模塊的并聯(lián)輸出，目前國內(nèi)的工程師通常會(huì)選擇使用外環(huán)均流調(diào)節(jié)模式、內(nèi)環(huán)均流調(diào)節(jié)模式或外置控制器均流調(diào)節(jié)模式，以此完成均流調(diào)節(jié)。其中，外置控制器均流調(diào)節(jié)模式已經(jīng)逐漸成為均流調(diào)節(jié)的主要發(fā)展方向。采用外置控制處理器之后，處理器將會(huì)處理來自各模塊和負(fù)載上的電壓和電流取樣信號，并采用某種控制策略，產(chǎn)生各功率單元所需的電壓控制信號Vconi（i=1，2，……，n）從而達(dá)成控制并聯(lián)系統(tǒng)、實(shí)現(xiàn)穩(wěn)壓和均流的控制目的。在實(shí)際的操作過程中，因?yàn)橥庵每刂破骱透鞑⒙?lián)模塊需要眾多的信號連接，如果采用模擬方式實(shí)現(xiàn)，就需要過多的電纜連接線，系統(tǒng)就極易受到各種干擾，造成穩(wěn)定性和可靠性的降低，而且模擬控制器難以實(shí)現(xiàn)優(yōu)化的控制策略。</p><p style="text-indent:25px">大功率電源模塊剛上電就燒毀冒煙了，輸入端的電容炸裂，是什么原因?qū)е碌哪兀枯斎腚妷簶O性接反了；輸入電壓遠(yuǎn)遠(yuǎn)高于標(biāo)稱電壓；輸出端極性電容接反了；輸出電路易引起短路或者外接負(fù)載在上電瞬間存在大電流。解決方法：接線前注意檢查或加防反接保護(hù)電路；選擇合適的輸入電壓；上電前檢查電容極性，確保正確；在電源模塊輸出端加短路保護(hù)。大功率電源模塊用一段壞了，再換一塊沒幾天又壞了，是電源模塊質(zhì)量問題，還是使用不當(dāng)造成的？輸出負(fù)載過輕使其可靠性降低所致輸出端電容過大導(dǎo)致模塊啟動(dòng)時(shí)造成損壞；輸入端電壓長期偏高導(dǎo)致模塊輸入端開關(guān)管損壞。大功率電源模塊輸入端的噪聲過大，未處理，直接耦合到電源模塊輸出端；</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="奉賢區(qū)大功率電源模塊批發(fā),大功率電源模塊" src="https://tyunfile.71360.com/UploadFile/shdsdz/637393060391019354/5564291.png"></div><p style="text-indent:25px">大家可能遇到在調(diào)試雙路大功率電源模塊時(shí)，出現(xiàn)輔路輸出不斷重啟，或則輔路電壓下跌很嚴(yán)重的現(xiàn)象。此現(xiàn)象70%是由于主路負(fù)載出現(xiàn)空載或則輕載，同時(shí)輔路負(fù)載很重導(dǎo)致。故電源主路一般會(huì)要求負(fù)載不小于額定負(fù)載的10%~20%。原理上主要是因?yàn)檩o路輸出電壓是依靠變壓器耦合穩(wěn)定輸出，輔路電壓的穩(wěn)定度與負(fù)載關(guān)系較大。市面上大部分大功率電源模塊不支持熱插拔，所謂熱插拔就是在帶電帶負(fù)載的情況下對模塊進(jìn)行插拔操作。一般需要熱插拔的模塊都是冗余模塊及備用模塊，此類大功率電源模塊都有加入熱插拔控制電路，防止插拔時(shí)產(chǎn)生尖峰電壓損壞電源。大功率電源模塊主要作用是電壓轉(zhuǎn)換，可以將交流或直流電變換成你想要的交流或直流電。天津大功率電源模塊生產(chǎn)工藝</p><p style="text-indent:25px">大功率電源模塊減少電源管理部分所占的電路板面積。奉賢區(qū)大功率電源模塊批發(fā)</p><p style="text-indent:25px">大功率電源模塊紋波是指疊加在輸出直流電上的交流成分，紋波幅值是交流成分的波峰與波谷之間的峰峰值，狹義的紋波是指在輸出直流電中含有工頻交流成分。工頻，是指電力系統(tǒng)的發(fā)電、輸電、變電與配電設(shè)備以及工業(yè)與民用電氣設(shè)備采用的額定頻率，單位赫茲HZ。中國采用 50Hz，有些國家采用60Hz。紋波是由電容充放電、PWM調(diào)節(jié)等所產(chǎn)生，指在輸出時(shí)，由電源本身開關(guān)引起的一種固定頻率波動(dòng)。當(dāng)開關(guān)電源在工作狀態(tài)時(shí)，每一個(gè)開關(guān)過程電能從輸入端被泵到輸出端，在輸出電容上會(huì)形成一個(gè)充放電的過程。這導(dǎo)致了輸出電壓的波動(dòng)，波動(dòng)頻率和開關(guān)管開關(guān)頻率相同，輸出紋波指的就是這個(gè)波動(dòng)。奉賢區(qū)大功率電源模塊批發(fā)</p><p style="text-indent:25px">上海多商電子有限公司位于上海市嘉定區(qū)科福路358號4號樓4樓。公司業(yè)務(wù)分為充電電源，ACDC電源模塊，DCDC電源模塊，大功率電源模塊等，目前不斷進(jìn)行創(chuàng)新和服務(wù)改進(jìn)，為客戶提供良好的產(chǎn)品和服務(wù)。公司將不斷增強(qiáng)企業(yè)重點(diǎn)競爭力，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。上海多商電子秉承“客戶為尊、服務(wù)為榮、創(chuàng)意為先、技術(shù)為實(shí)”的經(jīng)營理念，全力打造公司的重點(diǎn)競爭力。</p></p><br /><p>文章來源地址: http://www.cdcfah.com/cp/2657042.html</p></div></div></div></div></div><div id="8jgy7ta" class="page-right twoColRt"><div id="uegnpwy" class="box01 margin10 clearfix"><h3><a href="http://www.cdcfah.com/cp/">猜你喜歡</a></h3><div id="ixubszl" class="recomPic likePro"><a href="http://www.cdcfah.com/cp/814588.html"><div><img 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