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onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div></div><div id="pebtqcj" class="content"><p><span>需求數量：</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>產品關鍵詞：</span>奉賢區(qū)大功率電源模塊質量,大功率電源模塊</p><p><span>***更新：</span>2021-02-05 09:19:54</p><p><span id="click" >瀏覽次數：3次</span></p><a rel="nofollow" class="button">聯(lián)系我們</a></div></div><div id="wlikbdp" 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="ueeiaxe" class="page-proshow02"><p class="title">詳細說明</p><div id="j32u77d" class="box"><p><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，設置散熱裝置；確定大功率電源模塊殼溫測量點定位；確定并根據大功率電源模塊測量參考溫度的不同，進行分組；對每組大功率電源模塊進行老煉試驗，根據試驗結果，確定散熱裝置型號。在一些實施例中，所述散熱裝置采用熱傳導和風冷結合的方式;其中，奉賢區(qū)大功率電源模塊質量，所述的熱傳導通過散熱片接觸大功率電源模塊自帶散熱基板來傳導熱量并且根據不同型號規(guī)格電源模塊選擇對應的不同尺寸的散熱片作為仿真散熱片；另外，奉賢區(qū)大功率電源模塊質量，所述的風冷通過調節(jié)風扇風速來實現(xiàn)對大功率電源模塊的散熱，奉賢區(qū)大功率電源模塊質量。在一些實施例中，所述確定大功率電源模塊殼溫測量點定位。散熱器翅片長度會造成散熱性能的差異問題。奉賢區(qū)大功率電源模塊質量</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="奉賢區(qū)大功率電源模塊質量,大功率電源模塊" src="https://tyunfile.71360.com/UploadFile/shdsdz/637393060592945780/7659586.png"></div><p style="text-indent:25px">不同的供應商在市場上推出多種不同的模塊電源，而不同產品的輸入電壓、輸出功率、功能及拓撲結構等都各不相同。而現(xiàn)在電源模塊的市場比較成熟，有很多標準性的產品，可以很快的幫助電子設計者快速的完成產品的電源供給設計電路。元冊科技在產品的設計上，完全按行業(yè)標準來設計制造產品，可以適應大部分情況下的產品對電源模塊的需求。同時也會根據客戶的實際要求來對產品進行改造和優(yōu)化，盡可能的滿足客戶的個性化需求。采用大功率電源模塊可以節(jié)省開發(fā)時間，使產品可以更快推出市場，因此大功率電源模塊比集成式的解決方案優(yōu)勝。普陀區(qū)大功率電源模塊批發(fā)哪家好大功率電源模塊的保護功能應至少包括輸入過壓、欠壓、軟啟動保護。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="奉賢區(qū)大功率電源模塊質量,大功率電源模塊" src="https://tyunfile.71360.com/UploadFile/shdsdz/637393060581666400/7630396.png"></div><p style="text-indent:25px">大功率電源模塊在電壓轉換過程中有能量損耗，產生熱能導致模塊發(fā)熱，降低電源的轉換效率，影響電源模塊正常工作，但什么情況下會造成大功率電源模塊發(fā)熱較嚴重呢？負載過流，超出數據手冊應用范圍使得內部關鍵器件溫度飆升；環(huán)境溫度過高或散熱不良；其他大發(fā)熱源熱傳遞。使用線性電源時要加散熱片,或選擇效率高的開關電源；輸出功率更大的模塊，確保有70%~80%的負載降額；降低環(huán)境溫度，保持散熱良好。噪聲是衡量電源模塊優(yōu)劣的一大關鍵指標，在應用電路中，模塊周邊元器件的設計布局等也會影響輸出噪聲，哪些因素對輸出噪聲有較大影響呢？電源模塊與主電路噪聲敏感元件距離過近；主電路噪聲敏感元件的電源輸入端處未接去耦電容；多路系統(tǒng)中各單路輸出的電源模塊之間產生差頻干擾；地線處理不合理；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><p style="text-indent:25px">浪涌電壓來源：雷擊引起的浪涌，當發(fā)生雷擊時，通訊電路會產生感應，形成浪涌電壓或電流；系統(tǒng)應用中負載的切換及短路故障也會引起浪涌；其他設備頻繁開關機引起的高頻浪涌電壓。據某些**機構報道，一年之中發(fā)生的浪涌電壓超過應用電壓一倍以上的次數就高達800余次，電壓超1000V以上的就有300余次，這是一個相當大的數據，平均每天就有兩次，所以浪涌防護電路是必不可少的。大功率電源模塊的浪涌測試標準是參照IEC61000-4-5。該標準適用于電氣和電子設備在規(guī)定的工作狀態(tài)下工作時，對由開關或雷電作用所產生的有一定危害電平的浪涌電壓的反應。該標準不對絕緣物耐高壓的能力進行試驗，也不考慮直擊雷。大功率電源模塊主要作用是電壓轉換，可以將交流或直流電變換成你想要的交流或直流電。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="奉賢區(qū)大功率電源模塊質量,大功率電源模塊" src="https://tyunfile.71360.com/UploadFile/shdsdz/637393060769491026/1799904.png"></div><p style="text-indent:25px">大功率電源模塊的拓撲結構有多種，反激、正激、推挽、半橋、全橋多種，每種因為其原理的不同，也表現(xiàn)為在某些特性指標方面的優(yōu)越性。反激電源在開關的一個周期中，充電的時段沒有放電，就是因為這個特性，其時間響應特性、紋波特性就很難做到很好，雖然可以通過大的儲能電容協(xié)助解決一點，但原理性缺陷終歸是硬傷，智力不足是可以通過勤勞來彌補，但補來補去遇到臨界難題的時候終歸跨不過某個坎兒。漏感也大等等問題，但其優(yōu)點是電路簡單，成本低，體積小，不必加磁復位繞組，而且輸入電壓范圍比較寬。也正因為此，才有了其占總電源市場7成以上的份額。大功率電源模塊在電壓轉換過程中有能量損耗，產生熱能導致模塊發(fā)熱。普陀區(qū)大功率電源模塊批發(fā)哪家好</p><p style="text-indent:25px">噪聲是衡量電源模塊優(yōu)劣的一大關鍵指標。奉賢區(qū)大功率電源模塊質量</p><p style="text-indent:25px">大功率電源模塊結合了大部分必要的組件，以提供即插即用的解決方案，取代了40多種不同的元器件。這種整合可簡化并加速系統(tǒng)的設計，它也能明顯減少電源管理部分所占的電路板面積。為了達到所需要的電壓精度，這些電源模塊一般放在電路板上需要供電的芯片電路附近。但是隨著系統(tǒng)的復雜程度的提高，更大電流、更低電壓和更高頻率的系統(tǒng)中，布局更顯重要。電源模塊隨著導體特別是半導體的工藝發(fā)展，封裝技術和高頻軟開關的大量使用，電源模塊的規(guī)律密度越來越大，轉換的效率也越來越高。應用也越來越簡單。使得電源變的更輕，更小，更薄，噪音更低，可靠性和抗干擾性更加高的方向發(fā)展。奉賢區(qū)大功率電源模塊質量</p></p><br /><p>文章來源地址: http://www.cdcfah.com/cp/3174718.html</p></div></div></div></div></div><div id="o74cmy3" class="page-right twoColRt"><div id="8mdkmts" class="box01 margin10 clearfix"><h3><a href="http://www.cdcfah.com/cp/">猜你喜歡</a></h3><div id="sh8gykw" 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" class="vcenter" 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