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  2019-7-15 LED開關電源選用及使用注意事項

  導讀(du)：LED開(kai)關(guan)(guan)電(dian)源高(gao)頻(pin)化(hua)是(shi)其發(fa)展的(de)(de)方向，高(gao)頻(pin)化(hua)使開(kai)關(guan)(guan)電(dian)源小(xiao)(xiao)型化(hua)，并使開(kai)關(guan)(guan)電(dian)源進入更(geng)廣(guang)泛的(de)(de)應用(yong)領域(yu)，特別是(shi)在高(gao)新技(ji)術領域(yu)的(de)(de)應用(yong)，推動了高(gao)新技(ji)術產品的(de)(de)小(xiao)(xiao)型化(hua)、輕便化(hua)。另(ling)外(wai)開(kai)關(guan)(guan)電(dian)源的(de)(de)發(fa)展與(yu)應用(yong)在節約能源、節約資源及(ji)保(bao)護環境方面都具有重要的(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(kai)關電(dian)源(yuan)的(de)調整(zheng)管工作在(zai)飽和和截至狀(zhuang)態，因(yin)而(er)發(fa)熱量(liang)小，效率高(75%以(yi)上(shang))而(er)且省(sheng)掉了(le)大體(ti)積的(de)變壓(ya)(ya)器。但開(kai)關電(dian)源(yuan)輸(shu)出(chu)的(de)直流上(shang)面(mian)會(hui)疊加較大的(de)紋波(50mvat5voutputtypical)，在(zai)輸(shu)出(chu)端并接穩(wen)壓(ya)(ya)二極管可以(yi)改(gai)善，另外由于開(kai)關管工作是會(hui)...

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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(mo)塊電源的(de)(de)(de)薄(bo)型化(hua)、模(mo)塊化(hua)、標準化(hua)并(bing)以(yi)積木的(de)(de)(de)體例(li)進行(xing)組合的(de)(de)(de)電路(lu)拓撲結構得到了日益廣泛的(de)(de)(de)應(ying)用。如何(he)敏捷推出高品質、高可靠性(xing)、低成本的(de)(de)(de)模(mo)塊電源以(yi)進步(bu)產(chan)品競爭力，還需(xu)要(yao)我們持續(xu)不斷(duan)的(de)(de)(de)在電路(lu)、物料、生產(chan)工藝等多方(fang)面的(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)(dian)源模塊阻(zu)抗是指內部電(dian)(dian)(dian)(dian)(dian)阻(zu)、電(dian)(dian)(dian)(dian)(dian)容和電(dian)(dian)(dian)(dian)(dian)感(gan)(gan)組成的(de)(de)電(dian)(dian)(dian)(dian)(dian)路(lu)(lu)對(dui)交(jiao)流(liu)(liu)電(dian)(dian)(dian)(dian)(dian)起到(dao)阻(zu)礙(ai)作(zuo)用(yong)。電(dian)(dian)(dian)(dian)(dian)阻(zu)的(de)(de)阻(zu)抗就是其(qi)本身，電(dian)(dian)(dian)(dian)(dian)容電(dian)(dian)(dian)(dian)(dian)感(gan)(gan)兩者(zhe)對(dui)交(jiao)流(liu)(liu)電(dian)(dian)(dian)(dian)(dian)的(de)(de)阻(zu)礙(ai)叫(jiao)(jiao)電(dian)(dian)(dian)(dian)(dian)抗。電(dian)(dian)(dian)(dian)(dian)容在(zai)電(dian)(dian)(dian)(dian)(dian)路(lu)(lu)中對(dui)交(jiao)流(liu)(liu)電(dian)(dian)(dian)(dian)(dian)阻(zu)礙(ai)叫(jiao)(jiao)容抗，交(jiao)流(liu)(liu)電(dian)(dian)(dian)(dian)(dian)頻率越(yue)大，容抗越(yue)小，有隔直通交(jiao)的(de)(de)作(zuo)用(yong)。電(dian)(dian)(dian)(dian)(dian)感(gan)(gan)在(zai)電(dian)(dian)(dian)(dian)(dian)路(lu)(lu)中對(dui)交(jiao)流(liu)(liu)電(dian)(dian)(dian)(dian)(dian)阻(zu)礙(ai)叫(jiao)(jiao)感(gan)(gan)抗，交(jiao)流(liu)(liu)...

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  2019-7-4 PFC電源與開關電源的區別

  ?PFC電源(yuan) PFC的英文(wen)全(quan)稱為“Power Factor Correction”，意思是(shi)“功率(lv)因數(shu)校正(zheng)”，功率(lv)因數(shu)指的是(shi)有效功率(lv)與總(zong)耗電量（視在(zai)功率(lv)）之間的關系，也(ye)就是(shi)有效功率(lv)除以總(zong)耗電量（視在(zai)功率(lv)）的比值。 基本(ben)上功率(lv)因數(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

  變頻電(dian)源用于把國內220V50Hz變為(wei)110V60Hz、220V60Hz。國內很(hen)多廠家說什(shen)么負載(zai)都(dou)能(neng)帶。 變頻器：只(zhi)適用于電(dian)動(dong)機(ji)傳動(dong)。輸出220V、380V、660V等。而且頻率為(wei)0-400Hz。但只(zhi)能(neng)帶電(dian)動(dong)機(ji)負載(zai)。他們原理(li)上有什(shen)么不同(tong)。 ...

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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)斷電源(yuan)(UPS)在通信領域應用十分(fen)廣泛。在通信機房中(zhong)安(an)裝UPS(不(bu)間(jian)斷電源(yuan))供(gong)(gong)電系統(tong)越來(lai)越普遍。一個設(she)計良好的(de)UPS供(gong)(gong)電系統(tong)能(neng)給負載提供(gong)(gong)優質(zhi)電源(yuan)。如何(he)建立一個合理的(de)、安(an)全的(de)UPS供(gong)(gong)電系統(tong)成為大家關注的(de)問題。筆(bi)者從UPS供(gong)(gong)電系統(tong)配置各(ge)方面...

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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)(dian)(dian)(dian)阻(zu)(zu)在(zai)電(dian)(dian)(dian)(dian)(dian)(dian)子(zi)產(chan)品中(zhong)是最常用的器件之一，基本(ben)上只要是電(dian)(dian)(dian)(dian)(dian)(dian)子(zi)產(chan)品，內部就會存在(zai)電(dian)(dian)(dian)(dian)(dian)(dian)阻(zu)(zu)。電(dian)(dian)(dian)(dian)(dian)(dian)阻(zu)(zu)可(ke)以(yi)在(zai)電(dian)(dian)(dian)(dian)(dian)(dian)路(lu)中(zhong)用作(zuo)分壓器、分流器和負載電(dian)(dian)(dian)(dian)(dian)(dian)阻(zu)(zu)；它(ta)與電(dian)(dian)(dian)(dian)(dian)(dian)容器—起可(ke)以(yi)組成(cheng)濾波(bo)器及延(yan)時(shi)電(dian)(dian)(dian)(dian)(dian)(dian)路(lu)；在(zai)電(dian)(dian)(dian)(dian)(dian)(dian)源電(dian)(dian)(dian)(dian)(dian)(dian)路(lu)或控制(zhi)電(dian)(dian)(dian)(dian)(dian)(dian)路(lu)中(zhong)用作(zuo)取樣電(dian)(dian)(dian)(dian)(dian)(dian)阻(zu)(zu)；在(zai)半導體管電(dian)(dian)(dian)(dian)(dian)(dian)路(lu)中(zhong)用作(zuo)偏置電(dian)(dian)(dian)(dian)(dian)(dian)阻(zu)(zu)確定(ding)工作(zuo)點；使...

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