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  2019-7-15 LED開關電源選用及使用注意事項

  導讀：LED開(kai)(kai)(kai)關電(dian)源(yuan)高(gao)(gao)(gao)頻化(hua)是其發展(zhan)的(de)(de)方向，高(gao)(gao)(gao)頻化(hua)使(shi)開(kai)(kai)(kai)關電(dian)源(yuan)小型化(hua)，并使(shi)開(kai)(kai)(kai)關電(dian)源(yuan)進入更廣(guang)泛的(de)(de)應(ying)用領域(yu)，特別(bie)是在(zai)高(gao)(gao)(gao)新技(ji)術領域(yu)的(de)(de)應(ying)用，推動了高(gao)(gao)(gao)新技(ji)術產品的(de)(de)小型化(hua)、輕便化(hua)。另外開(kai)(kai)(kai)關電(dian)源(yuan)的(de)(de)發展(zhan)與應(ying)用在(zai)節約(yue)(yue)能源(yuan)、節約(yue)(yue)資源(yuan)及保(bao)護環境方面都(dou)具有重要的(de)(de)意義。...

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  2019-7-15 開關電源與線性電源使用接線端子的區別!

  開關(guan)(guan)電(dian)源的(de)調整管工(gong)作在飽和和截至狀(zhuang)態，因(yin)而發(fa)熱量(liang)小，效率高(75%以上(shang)(shang))而且(qie)省(sheng)掉了大(da)體(ti)積的(de)變壓器(qi)。但開關(guan)(guan)電(dian)源輸(shu)出的(de)直流上(shang)(shang)面會疊加較(jiao)大(da)的(de)紋波(50mvat5voutputtypical)，在輸(shu)出端并接穩壓二極(ji)管可以改善，另(ling)外(wai)由(you)于開關(guan)(guan)管工(gong)作是(shi)會...

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  2019-7-11 開關電源變壓器發出異響原因分析

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  2019-7-11 AC-DC電源適配器最新六級能耗標準

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  2019-7-8 淺談電源模塊發展的開發設計要點

  模塊(kuai)電(dian)源(yuan)的(de)(de)(de)(de)薄型化、模塊(kuai)化、標準化并以(yi)積木的(de)(de)(de)(de)體例(li)進(jin)行(xing)組合的(de)(de)(de)(de)電(dian)路拓撲(pu)結構得到了(le)日益廣泛的(de)(de)(de)(de)應(ying)用。如何敏捷推(tui)出高品(pin)質(zhi)、高可靠性、低成本的(de)(de)(de)(de)模塊(kuai)電(dian)源(yuan)以(yi)進(jin)步產(chan)品(pin)競爭力，還需要(yao)我們持續不斷的(de)(de)(de)(de)在電(dian)路、物(wu)料、生產(chan)工藝等(deng)多方(fang)面的(de)(de)(de)(de)提升突破。...

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  2019-7-8 什么是開關電源模塊的阻抗

  開關電(dian)(dian)(dian)(dian)源模塊阻(zu)抗是指內部電(dian)(dian)(dian)(dian)阻(zu)、電(dian)(dian)(dian)(dian)容(rong)和電(dian)(dian)(dian)(dian)感組(zu)成的電(dian)(dian)(dian)(dian)路對(dui)交(jiao)(jiao)(jiao)流(liu)電(dian)(dian)(dian)(dian)起到阻(zu)礙(ai)作(zuo)(zuo)用。電(dian)(dian)(dian)(dian)阻(zu)的阻(zu)抗就是其本身，電(dian)(dian)(dian)(dian)容(rong)電(dian)(dian)(dian)(dian)感兩者對(dui)交(jiao)(jiao)(jiao)流(liu)電(dian)(dian)(dian)(dian)的阻(zu)礙(ai)叫電(dian)(dian)(dian)(dian)抗。電(dian)(dian)(dian)(dian)容(rong)在電(dian)(dian)(dian)(dian)路中(zhong)(zhong)對(dui)交(jiao)(jiao)(jiao)流(liu)電(dian)(dian)(dian)(dian)阻(zu)礙(ai)叫容(rong)抗，交(jiao)(jiao)(jiao)流(liu)電(dian)(dian)(dian)(dian)頻率越大(da)，容(rong)抗越小，有隔直(zhi)通交(jiao)(jiao)(jiao)的作(zuo)(zuo)用。電(dian)(dian)(dian)(dian)感在電(dian)(dian)(dian)(dian)路中(zhong)(zhong)對(dui)交(jiao)(jiao)(jiao)流(liu)電(dian)(dian)(dian)(dian)阻(zu)礙(ai)叫感抗，交(jiao)(jiao)(jiao)流(liu)...

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  2019-7-4 PFC電源與開關電源的區別

  ?PFC電源 PFC的(de)英文全稱為“Power Factor Correction”，意思(si)是“功(gong)率(lv)因(yin)(yin)數(shu)校正”，功(gong)率(lv)因(yin)(yin)數(shu)指的(de)是有(you)效功(gong)率(lv)與總(zong)耗電量(liang)（視在功(gong)率(lv)）之間的(de)關系，也(ye)就(jiu)是有(you)效功(gong)率(lv)除以總(zong)耗電量(liang)（視在功(gong)率(lv)）的(de)比值。 基(ji)本上功(gong)率(lv)因(yin)(yin)數(shu)...

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  2019-7-4 專業解讀變頻電源與變頻器的三大區別

  變(bian)頻(pin)電(dian)源用于把國(guo)內220V50Hz變(bian)為110V60Hz、220V60Hz。國(guo)內很多(duo)廠家說什么(me)負載都能帶。 變(bian)頻(pin)器：只適(shi)用于電(dian)動(dong)機傳動(dong)。輸(shu)出220V、380V、660V等(deng)。而且頻(pin)率為0-400Hz。但只能帶電(dian)動(dong)機負載。他(ta)們原理上有什么(me)不同。 ...

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  2019-7-3 淺談通信機房UPS供電系統配置方案

  不(bu)間(jian)斷電(dian)(dian)源(yuan)(UPS)在通信領域應(ying)用(yong)十分廣泛。在通信機(ji)房(fang)中(zhong)安裝(zhuang)UPS(不(bu)間(jian)斷電(dian)(dian)源(yuan))供電(dian)(dian)系(xi)統(tong)(tong)越來(lai)越普遍。一(yi)個設(she)計良好的UPS供電(dian)(dian)系(xi)統(tong)(tong)能給(gei)負(fu)載提供優(you)質電(dian)(dian)源(yuan)。如何建(jian)立(li)一(yi)個合理的、安全的UPS供電(dian)(dian)系(xi)統(tong)(tong)成為大家關(guan)注(zhu)的問題。筆者從UPS供電(dian)(dian)系(xi)統(tong)(tong)配(pei)置各方面(mian)...

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  2019-7-3 電路設計中電阻的選擇及其作用

  電(dian)(dian)(dian)阻(zu)(zu)(zu)(zu)在(zai)電(dian)(dian)(dian)子(zi)產品中(zhong)(zhong)(zhong)是最常(chang)用的器(qi)件之一，基本上(shang)只要是電(dian)(dian)(dian)子(zi)產品，內部(bu)就會存在(zai)電(dian)(dian)(dian)阻(zu)(zu)(zu)(zu)。電(dian)(dian)(dian)阻(zu)(zu)(zu)(zu)可(ke)以在(zai)電(dian)(dian)(dian)路(lu)中(zhong)(zhong)(zhong)用作分(fen)壓器(qi)、分(fen)流器(qi)和(he)負載電(dian)(dian)(dian)阻(zu)(zu)(zu)(zu)；它與電(dian)(dian)(dian)容器(qi)—起(qi)可(ke)以組(zu)成濾波器(qi)及延時電(dian)(dian)(dian)路(lu)；在(zai)電(dian)(dian)(dian)源電(dian)(dian)(dian)路(lu)或控制電(dian)(dian)(dian)路(lu)中(zhong)(zhong)(zhong)用作取樣電(dian)(dian)(dian)阻(zu)(zu)(zu)(zu)；在(zai)半導體管電(dian)(dian)(dian)路(lu)中(zhong)(zhong)(zhong)用作偏置電(dian)(dian)(dian)阻(zu)(zu)(zu)(zu)確(que)定工作點；使...

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