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onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div></div><div id="8aqsuwd" class="content"><p><span>需求數(shù)量：</span>0</p><p><span>價格要求：</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>吉林充電電源批發(fā)便宜嗎,充電電源</p><p><span>***更新：</span>2021-02-01 05:15:26</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="raxubd7" 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: </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="kizbdkb" class="page-proshow02"><p class="title">詳細說明</p><div id="r7dkrta" class="box"><p><p style="text-indent:25px">輸出過載是指負載工作功率大于電源模塊的額定輸出功率，過載情況下電源模塊的輸出電壓明顯被拉低。電源模塊輸出與負載連接必然要有一段PCB走線，走線越長、走線越窄則它的等效電阻越大。等效電阻可以認為是串聯(lián)在負載的工作回路中，將起到分壓作用，因此導致負載兩端的電壓小于模塊的輸出電壓。此外，除了走線問題還有很多情況起到類似的作用，比如焊點接觸不良導致等效電阻增加，線路氧化或腐蝕導致等效電阻增加。很多產(chǎn)品的AC和DC部分是不在一塊板上的，在生產(chǎn)或終端客戶使用中不可避免涉及到插拔電源連接器的情況，吉林充電電源批發(fā)便宜嗎，吉林充電電源批發(fā)便宜嗎。模塊電源普遍用于交換設(shè)備、微波通訊以及光傳輸，吉林充電電源批發(fā)便宜嗎、路由器等通信領(lǐng)域和汽車電子、航空航天等。吉林充電電源批發(fā)便宜嗎</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="吉林充電電源批發(fā)便宜嗎,充電電源" src="https://tyunfile.71360.com/UploadFile/shdsdz/637393063883948879/9015043.png"></div><p style="text-indent:25px">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，其特點是可為**集成電路（ASIC）、數(shù)字信號處理器 (DSP)、微處理器、存儲器、現(xiàn)場可編程門陣列 (FPGA) 及其他數(shù)字或模擬負載提供供電。由于模塊式結(jié)構(gòu)的優(yōu)點甚多，因此模塊電源用于交換設(shè)備、接入設(shè)備、移動通訊、微波通訊以及光傳輸、路由器等通信領(lǐng)域和汽車電子、航空航天等。一般來說，這類模塊稱為負載點 (POL) 電源供應(yīng)系統(tǒng)或使用點電源供應(yīng)系統(tǒng) (PUPS)。由于模塊式結(jié)構(gòu)的優(yōu)點甚多，因此模塊電源用于交換設(shè)備、接入設(shè)備、移動通訊、微波通訊以及光傳輸、路由器等通信領(lǐng)域和汽車電子、航空航天等。尤其近幾年由于數(shù)據(jù)業(yè)務(wù)的飛速發(fā)展和分布式供電系統(tǒng)的不斷推廣,模塊電源的增幅已經(jīng)超出了一次電源。模塊電源具有隔離作用，抗干擾能力強，自帶保護功能，便于集成。隨著半導體工藝、封裝技術(shù)和高頻軟開關(guān)的大量使用,模塊電源功率密度越來越大,轉(zhuǎn)換效率越來越高,應(yīng)用也越來越簡單。楊浦區(qū)充電電源哪個品牌好各種電子、電器設(shè)備領(lǐng)域,程控交換機、電子檢測設(shè)備電源、控制設(shè)備電源等都已普遍地使用了直流開關(guān)電源。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="吉林充電電源批發(fā)便宜嗎,充電電源" src="https://tyunfile.71360.com/UploadFile/shdsdz/637393061927181661/466738.png"></div><p style="text-indent:25px">對于充電電源模塊的應(yīng)力設(shè)計，重點關(guān)注場效應(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。由于電源模塊越趨于小型化，功率密度相應(yīng)越來越高，電源模塊有關(guān)熱設(shè)計方面的問題。特別是對使用有電解電容的電源模塊，高溫會使電解電容的電解液加速消耗，減少電解電容的壽命。高溫會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，導致絕緣耐壓不良甚至造成匝間短路。良好的熱設(shè)計不僅可延長電源模塊和其周圍元器件的使用壽命，還可使整個產(chǎn)品發(fā)熱均勻，減少故障的發(fā)生。</p><p style="text-indent:25px">開關(guān)電源中應(yīng)用的電子電力器件主要為快恢復二極管、肖特基二極管、和MOSFET。SCR在開關(guān)電源輸入整流電路及軟啟動電路中有少量應(yīng)用。開關(guān)電源的三大特征：開關(guān)：電力電子器件工作在開關(guān)狀態(tài)而不是線性狀態(tài)高頻：電力電子器件工作在高頻而不是接近工頻的低頻直流：開關(guān)電源輸出的是直流而不是交流。開關(guān)電源的種類：分類方法多種多樣。分為AC/DC和DC/DC兩大類，DC/DC變換器現(xiàn)已實現(xiàn)模塊化，且設(shè)計技術(shù)及生產(chǎn)工藝在國內(nèi)均已成熟和標準化，并已得到用戶的認可。在選擇充電電源模塊時一定要考慮實際需要的工作溫度范圍。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="吉林充電電源批發(fā)便宜嗎,充電電源" src="https://tyunfile.71360.com/UploadFile/shdsdz/637393063892249814/9718505.png"></div><p style="text-indent:25px">我們俗稱的電源其實是電源轉(zhuǎn)換器。電源轉(zhuǎn)換器根據(jù)轉(zhuǎn)換形式可以分成：AC-AC（周波變換器）、AC-DC（整流器）、DC-DC（變換器）、DC-AC（逆變器）4類；根據(jù)轉(zhuǎn)換方式的不同又分為：線性電源和開關(guān)電源；根據(jù)調(diào)控效果分類又分為：穩(wěn)壓、恒流、調(diào)頻、調(diào)相。電源模塊作為電子行業(yè)的一種電源轉(zhuǎn)換裝置，它被應(yīng)用在各種工業(yè)自動化行業(yè)。電源模塊基于開關(guān)電源技術(shù)，采用好的原材料，結(jié)合特殊的模塊化生產(chǎn)工藝制作而成。它具有模塊化設(shè)計、防潮、抗震動、一致性好、應(yīng)用簡單，可靠性高等優(yōu)點。隨著科學技術(shù)飛速發(fā)展，對電源可靠性、容量、體積的要求越來越高，模塊電源越來越顯示出其很好性，憑借它工作頻率高、體積小、可靠性高、便于安裝和擴容的優(yōu)勢，應(yīng)用也越來越常見。過載情況下電源模塊的輸出電壓明顯被拉低。楊浦區(qū)充電電源哪個品牌好</p><p style="text-indent:25px">充電電源模塊具有模塊化設(shè)計、防潮、抗震動、一致性好、應(yīng)用簡單，可靠性高等優(yōu)點。吉林充電電源批發(fā)便宜嗎</p><p style="text-indent:25px">直流開關(guān)電源中開關(guān)穩(wěn)壓器的過電壓保護包括輸入過電壓保護和輸出過電壓保護。如果開關(guān)穩(wěn)壓器所使用的未穩(wěn)壓直流電源(諸如蓄電池和整流器)的電壓如果過高,將導致開關(guān)穩(wěn)壓器不能正常工作,甚至損壞內(nèi)部器件,因此開關(guān)電源中有必要使用輸入過電壓保護電路。用晶體管和繼電器所組成的保護電路,在該電路中,當輸入直流電源的電壓高于穩(wěn)壓二極管的擊穿電壓值時,穩(wěn)壓管擊穿,有電流流過電阻R,使晶體管T導通,繼電器動作,常閉接點斷開,切斷輸入。輸入電源的極性保護電路可以跟輸入過電壓保護結(jié)合在一起,構(gòu)成極性保護鑒別與過電壓保護電路。吉林充電電源批發(fā)便宜嗎</p></p><br /><p>文章來源地址: http://www.cdcfah.com/cp/3105774.html</p></div></div></div></div></div><div id="mvxz237" class="page-right twoColRt"><div id="ve2e8of" class="box01 margin10 clearfix"><h3><a href="http://www.cdcfah.com/cp/">猜你喜歡</a></h3><div id="fjgdkwn" 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配件哪家強信息推薦自業(yè)物資供應(yīng)</p></a></div><div id="ujqs2k8" 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