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src="https://tyunfile.71360.com/UploadFile/szmdjd/637393089834770910/6557514.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div><div id="2l4nubf" class="smallimg"><div><p class="pic"><img src="https://tyunfile.71360.com/UploadFile/szmdjd/637393089834770910/6557514.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div></div><div id="hy22wdp" 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>廣東省</p><p><span>包裝要求：</span><span style="color: #f30;"></span></p><p><span>產(chǎn)品關(guān)鍵詞：</span>廣西開關(guān)可調(diào)直流電源,直流電源</p><p><span>***更新：</span>2020-11-01 10:26:41</p><p><span id="click" >瀏覽次數(shù)：0次</span></p><a rel="nofollow" class="button">聯(lián)系我們</a></div></div><div id="hikmizb" class="rightbox"><h3>公司基本資料信息</h3><p style="border:0;"><a rel="nofollow">深圳市茂迪機(jī)電設(shè)備有限公司</a></p><p><span>聯(lián)系人：</span>黃富強(qiáng)</p><p><span>郵箱: </span>fuqiang.huang@maodi.net</p><p><span>電話: </span>13509625980</p><p><span>傳真: </span>0755_</p><p><span>網(wǎng)址: </span>http://www.maodi.net</p><p><span>手機(jī): </span>0755-83280136</p><p><span>地址: </span>深南大道6006號(hào)華豐大廈2803、2804</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="2pbriul" class="page-proshow02"><p class="title">詳細(xì)說明</p><div id="a7uwipg" class="box"><p><p> 開關(guān)電源是指先將交流電源整流濾波成直流電源,用通過電路控制開關(guān)管進(jìn)行高速的道通與截止,將直流電轉(zhuǎn)化為高頻率的交流電提供給變壓器進(jìn)行變壓,從而產(chǎn)生所需要的一組或多組電壓輸出負(fù)載的電氣產(chǎn)品. 轉(zhuǎn)化為高頻交流電的原因是高頻交流在變壓器變壓電路中的效率要比50Hz高很多,所以開關(guān)變壓器可以做的很小,而且工作時(shí)不是很熱.成本很低.如果不將50Hz變?yōu)楦哳l那開關(guān)電源就沒有意義 </p> <p> 開關(guān)電源的工作原理是: </p> <p> 1，廣西開關(guān)可調(diào)直流電源.交流電源輸入經(jīng)整流濾波成直流電源; </p> <p> 2.通過高頻PWM(脈沖寬度調(diào)制)信號(hào)控制開關(guān)管，廣西開關(guān)可調(diào)直流電源,將直流加到開關(guān)變壓器初級(jí)上; </p> <p> 3，廣西開關(guān)可調(diào)直流電源.開關(guān)變壓器次級(jí)感應(yīng)出高頻電壓,經(jīng)整流濾波供給負(fù)載; </p> <p> 4.輸出部分通過一定的電路反饋給控制電路,控制PWM占空比,以達(dá)到穩(wěn)定輸出的目的. </p> <p> 開關(guān)電源電路: 開關(guān)可調(diào)直流電源廠家？廣西開關(guān)可調(diào)直流電源</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="廣西開關(guān)可調(diào)直流電源,直流電源" src="https://tyunfile.71360.com/UploadFile/szmdjd/637393089834770910/6557514.png"></div><p> 48Vdc直流電源浪涌防護(hù)解決方案 </p> <p> 基站直流電源浪涌防護(hù)解決方案，如圖所示。該方案中的***級(jí)雷擊電流瀉放采用單獨(dú)的堆疊式GDT替代傳統(tǒng)的 GDT 與 MOV 串聯(lián)，與第二級(jí)防護(hù) MOV 之間的耦合可以根據(jù)客戶的具體應(yīng)用采用電感或電阻來實(shí)現(xiàn)。此方案，可以在更小占板面積下，實(shí)現(xiàn)高達(dá) 20KA 的 8/20us 雷擊電流防護(hù)。隨著客戶對(duì)于直流電源防護(hù)能力、防護(hù)方案的尺寸、以及性價(jià)比要求的提高，傳統(tǒng)的 GDT 加 MOV 的保護(hù)解決方案暴露出其占板面積大、多元器件并聯(lián)、成本高以及高保護(hù)殘壓等不足。而基于浪拓電子新型堆疊 GDT 的方案則因其具有以下優(yōu)勢(shì)：1）緊湊的堆疊 GDT，長(zhǎng)度 B<17mm，高度 H<9mm，實(shí)現(xiàn) 20KA 的 8/20us 防護(hù)能力2）直接應(yīng)用于直流電源，無續(xù)流問題，無需 MOV串聯(lián)3）高絕緣電阻，低電容4）與多個(gè) MOV 并聯(lián)解決方案相比，相同的保護(hù)能力，其高度降低 50%， PCB 占板面積節(jié)省超過 40%不存在不同并聯(lián)支路間不平衡電流的問題廣西開關(guān)可調(diào)直流電源可編程直流電源電源。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="廣西開關(guān)可調(diào)直流電源,直流電源" src="https://tyunfile.71360.com/UploadFile/szmdjd/637393089690316908/4897128.png"></div><p> 高壓直流電源已越來越***的應(yīng)用于工業(yè)、醫(yī)學(xué)、核物理、檢測(cè)等領(lǐng)域。對(duì)于X 光機(jī)，粒子加速器，電子束焊機(jī)，電子束曝光機(jī)等一些應(yīng)用場(chǎng)合，對(duì)電壓的水平要求比較高，它們均要求低紋波電壓。文章對(duì)幾種用于高壓直流電源的電路拓?fù)浣Y(jié)構(gòu)分別進(jìn)行了介紹，并對(duì)它們進(jìn)行了比較，指出了各自的優(yōu)缺點(diǎn)。 </p> <p> 近年來，隨著新的電力電子器件的應(yīng)用使得高壓直流電源出現(xiàn)了頻率高，效率高，功率密度高，可靠性高等新特性。高頻化可以提高電源性能，減少變壓器的體積和紋波系數(shù)，但也帶來了新的技術(shù)問題。過高的頻率會(huì)導(dǎo)致開關(guān)管開斷頻繁，開關(guān)損耗增大，影響開關(guān)管壽命并使整機(jī)效率下降。 </p> <p> 鑒于以上問題，本文采用雙路電源并聯(lián)輸出的方法得到低紋波直流。在開關(guān)管頻率受限的***，本方法可以在頻率較低的情況下得到低紋波直流。 </p><p> 可編程直流電源的作用是什么？ </p> <p> 可編程直流電源是用數(shù)字或編碼器輸入，非電位器調(diào)節(jié)電壓、電流的直流電源。 </p> <p> <br /> </p> <p> 可編程直流電源有以下作用： </p> <p> 1、**功能——在某些可編程電源中，有一種通道間聯(lián)動(dòng)的功能，即**功能。 </p> <p> **功能指所有的輸出同時(shí)被控制，并且通過保持電壓與事先設(shè)定的電壓一致，使它們都服從統(tǒng)一指揮。 </p> <p> 例如：如果電壓1從10V變?yōu)?2V，則電壓2和3將隨之從5V變?yōu)?V，電壓4隨之從20V變?yōu)?4V。 </p> <p> 但是，如果其中一個(gè)處于領(lǐng)導(dǎo)位置的輸出的比較大電流存在極限值，而且輸出電流達(dá)到該極限值時(shí)，則所有其他處于從屬地位的輸出電流也同時(shí)進(jìn)入限流狀態(tài)。 </p> <p> 如果設(shè)備中安裝了電子保險(xiǎn)絲，則到達(dá)該極限值的輸出將被斷開，進(jìn)而其他處于從屬位置的輸出也全部被斷開。 </p> <p> <br /> 進(jìn)口開關(guān)可調(diào)直流電源。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="廣西開關(guān)可調(diào)直流電源,直流電源" src="https://tyunfile.71360.com/UploadFile/szmdjd/637393089516273958/9059328.png"></div><p> 2）輸出電阻及電流調(diào)整率：輸出電阻與放大器的輸出電阻相同，其值為當(dāng)輸入電壓不變時(shí)，輸出電壓變化量與輸出電流變化量之比的***值。電流調(diào)整率：輸出電流從0變到最大值時(shí)所產(chǎn)生的輸出電壓相對(duì)變化值。輸出電阻和電流調(diào)整率均說明負(fù)載電流變化對(duì)輸出電壓的影響，因此也只需測(cè)試其中之一即可。 </p> <p> 3）紋波電壓：疊加在輸出電壓上的交流電壓分量。用示波器觀測(cè)其峰峰值一般為毫伏量級(jí)。也可用交流毫伏表測(cè)量其有效值，但因紋波不是正弦波，所以有一定的誤差。廣東可編程直流電源。江西菊水直流電源模塊</p><p style="text-indent:25px">直流電源和交流電源的區(qū)別。廣西開關(guān)可調(diào)直流電源</p><p style="text-indent:25px">穩(wěn)壓電源的分類方法繁多，按輸出電源的類型分有直流穩(wěn)壓電源和交流穩(wěn)壓電源；按穩(wěn)壓電路與負(fù)載直流穩(wěn)壓電源的連接方式分有串聯(lián)穩(wěn)壓電源和并聯(lián)穩(wěn)壓電源；按調(diào)整管的工作狀態(tài)分有線性穩(wěn)壓電源和開關(guān)穩(wěn)壓電源；按電路類型分有簡(jiǎn)單穩(wěn)壓電源和反饋型穩(wěn)壓電源，等等。如此繁多的分類方式往往讓初學(xué)者摸不著頭腦，不知道從哪里入手。其實(shí)應(yīng)該說這些看似繁多的分類方法之間有著一定的層次關(guān)系，只要理清了這個(gè)層次自然可以分清楚電源的種類了。既然我們談的是穩(wěn)壓電源的分類，那么首先就應(yīng)該清楚電源的輸出是什么，是輸出直流電還是輸出交流電。這樣***個(gè)層次就出來了，首先應(yīng)該根據(jù)電源的輸出類型來分類。接下來的分類就要麻煩一些，是按穩(wěn)壓電路與負(fù)載的連接方式分類還是按調(diào)整管的工作狀態(tài)分類呢？其實(shí)了解一下我們身邊的電子設(shè)備會(huì)發(fā)現(xiàn)實(shí)際應(yīng)用中穩(wěn)壓電源有兩個(gè)區(qū)別很大的種類，一種是各種比較簡(jiǎn)單的電子設(shè)備中***使用的線性穩(wěn)壓電源，比如收音機(jī)、小型音響等；一種是各種復(fù)雜電子設(shè)備中***使用的開關(guān)穩(wěn)壓電源，比如大屏幕彩電、微型計(jì)算機(jī)等。廣西開關(guān)可調(diào)直流電源</p><p style="text-indent:25px">深圳市茂迪機(jī)電設(shè)備有限公司是一家一般經(jīng)營項(xiàng)目是：儀器儀表、通訊器材、機(jī)械設(shè)備、五金工具的購銷、技術(shù)維護(hù)、信息咨詢；國內(nèi)貿(mào)易；貨物與技術(shù)的進(jìn)出口業(yè)務(wù)。（法律、行政法規(guī)、國**決定禁止的項(xiàng)目除外，限制的項(xiàng)目須取得許可后方可經(jīng)營），許可經(jīng)營項(xiàng)目是：儀器儀表、通訊器材、機(jī)械設(shè)備、五金工具的安裝、維修。的公司，致力于發(fā)展為創(chuàng)新務(wù)實(shí)、誠實(shí)可信的企業(yè)。茂迪作為一般經(jīng)營項(xiàng)目是：儀器儀表、通訊器材、機(jī)械設(shè)備、五金工具的購銷、技術(shù)維護(hù)、信息咨詢；國內(nèi)貿(mào)易；貨物與技術(shù)的進(jìn)出口業(yè)務(wù)。（法律、行政法規(guī)、國**決定禁止的項(xiàng)目除外，限制的項(xiàng)目須取得許可后方可經(jīng)營），許可經(jīng)營項(xiàng)目是：儀器儀表、通訊器材、機(jī)械設(shè)備、五金工具的安裝、維修。的企業(yè)之一，為客戶提供良好的電能質(zhì)量分析儀，功率分析儀，亮度計(jì)，色差儀。茂迪繼續(xù)堅(jiān)定不移地走高質(zhì)量發(fā)展道路，既要實(shí)現(xiàn)基本面穩(wěn)定增長(zhǎng)，又要聚焦關(guān)鍵領(lǐng)域，實(shí)現(xiàn)轉(zhuǎn)型再突破。茂迪創(chuàng)始人秦學(xué)明，始終關(guān)注客戶，創(chuàng)新科技，竭誠為客戶提供良好的服務(wù)。</p></p><br /><p>文章來源地址: http://www.cdcfah.com/cp/1802708.html</p></div></div></div></div></div><div id="3kegs8m" class="page-right twoColRt"><div id="jli7fmy" class="box01 margin10 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