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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)關(guan)電(dian)源(yuan)高(gao)頻(pin)化是其發展的(de)(de)(de)方(fang)向(xiang)，高(gao)頻(pin)化使(shi)開(kai)(kai)關(guan)電(dian)源(yuan)小型化，并使(shi)開(kai)(kai)關(guan)電(dian)源(yuan)進入(ru)更廣泛的(de)(de)(de)應(ying)(ying)用(yong)領(ling)域，特別(bie)是在(zai)高(gao)新技(ji)術領(ling)域的(de)(de)(de)應(ying)(ying)用(yong)，推動了高(gao)新技(ji)術產品的(de)(de)(de)小型化、輕便化。另(ling)外開(kai)(kai)關(guan)電(dian)源(yuan)的(de)(de)(de)發展與應(ying)(ying)用(yong)在(zai)節(jie)約能源(yuan)、節(jie)約資源(yuan)及保護(hu)環境方(fang)面(mian)都(dou)具有重要的(de)(de)(de)意義(yi)。...

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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)關電源(yuan)的(de)(de)調整管(guan)(guan)工作(zuo)在(zai)飽(bao)和(he)和(he)截(jie)至狀態，因而(er)發(fa)熱量小，效率高(gao)(75%以上)而(er)且省(sheng)掉(diao)了大體積的(de)(de)變(bian)壓(ya)器。但開(kai)關電源(yuan)輸出的(de)(de)直流(liu)上面會(hui)(hui)疊(die)加(jia)較大的(de)(de)紋波(bo)(50mvat5voutputtypical)，在(zai)輸出端并(bing)接(jie)穩壓(ya)二(er)極管(guan)(guan)可以改(gai)善，另外(wai)由(you)于開(kai)關管(guan)(guan)工作(zuo)是會(hui)(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(kuai)電源(yuan)的(de)(de)薄型化、模(mo)塊(kuai)化、標準(zhun)化并以(yi)積(ji)木的(de)(de)體(ti)例進(jin)行組合的(de)(de)電路拓撲結構得到(dao)了(le)日益廣泛的(de)(de)應用。如何(he)敏(min)捷推(tui)出高品(pin)質(zhi)、高可靠性、低成(cheng)本的(de)(de)模(mo)塊(kuai)電源(yuan)以(yi)進(jin)步產品(pin)競爭(zheng)力，還需(xu)要我們持(chi)續不(bu)斷的(de)(de)在電路、物料、生產工藝等多方面的(de)(de)提(ti)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(mo)塊阻(zu)(zu)(zu)抗(kang)是指內部電(dian)(dian)(dian)(dian)阻(zu)(zu)(zu)、電(dian)(dian)(dian)(dian)容(rong)和電(dian)(dian)(dian)(dian)感(gan)組成的電(dian)(dian)(dian)(dian)路對交(jiao)流(liu)電(dian)(dian)(dian)(dian)起到阻(zu)(zu)(zu)礙(ai)作用(yong)。電(dian)(dian)(dian)(dian)阻(zu)(zu)(zu)的阻(zu)(zu)(zu)抗(kang)就(jiu)是其本身，電(dian)(dian)(dian)(dian)容(rong)電(dian)(dian)(dian)(dian)感(gan)兩者對交(jiao)流(liu)電(dian)(dian)(dian)(dian)的阻(zu)(zu)(zu)礙(ai)叫(jiao)電(dian)(dian)(dian)(dian)抗(kang)。電(dian)(dian)(dian)(dian)容(rong)在電(dian)(dian)(dian)(dian)路中對交(jiao)流(liu)電(dian)(dian)(dian)(dian)阻(zu)(zu)(zu)礙(ai)叫(jiao)容(rong)抗(kang)，交(jiao)流(liu)電(dian)(dian)(dian)(dian)頻率(lv)越(yue)大，容(rong)抗(kang)越(yue)小，有隔直通(tong)交(jiao)的作用(yong)。電(dian)(dian)(dian)(dian)感(gan)在電(dian)(dian)(dian)(dian)路中對交(jiao)流(liu)電(dian)(dian)(dian)(dian)阻(zu)(zu)(zu)礙(ai)叫(jiao)感(gan)抗(kang)，交(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”，意思是“功(gong)(gong)(gong)率(lv)因數(shu)(shu)校正”，功(gong)(gong)(gong)率(lv)因數(shu)(shu)指的(de)是有(you)效(xiao)功(gong)(gong)(gong)率(lv)與總耗電量（視在(zai)功(gong)(gong)(gong)率(lv)）之(zhi)間的(de)關系，也就(jiu)是有(you)效(xiao)功(gong)(gong)(gong)率(lv)除以總耗電量（視在(zai)功(gong)(gong)(gong)率(lv)）的(de)比值。 基(ji)本上(shang)功(gong)(gong)(gong)率(lv)因數(shu)(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)(bian)頻(pin)(pin)電源用于把國內220V50Hz變(bian)(bian)為110V60Hz、220V60Hz。國內很多廠(chang)家(jia)說什(shen)么(me)負(fu)載都能(neng)帶。 變(bian)(bian)頻(pin)(pin)器：只適用于電動(dong)機(ji)傳動(dong)。輸出(chu)220V、380V、660V等。而且頻(pin)(pin)率為0-400Hz。但(dan)只能(neng)帶電動(dong)機(ji)負(fu)載。他(ta)們(men)原理上有什(shen)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

  不間(jian)斷電(dian)(dian)(dian)(dian)源(yuan)(UPS)在(zai)通信領域應用十分廣泛。在(zai)通信機房中安裝UPS(不間(jian)斷電(dian)(dian)(dian)(dian)源(yuan))供(gong)電(dian)(dian)(dian)(dian)系(xi)統(tong)越(yue)來越(yue)普遍。一(yi)個設計(ji)良好的(de)UPS供(gong)電(dian)(dian)(dian)(dian)系(xi)統(tong)能給負載提(ti)供(gong)優質電(dian)(dian)(dian)(dian)源(yuan)。如(ru)何建(jian)立一(yi)個合理的(de)、安全(quan)的(de)UPS供(gong)電(dian)(dian)(dian)(dian)系(xi)統(tong)成為大(da)家(jia)關(guan)注的(de)問題(ti)。筆(bi)者從(cong)UPS供(gong)電(dian)(dian)(dian)(dian)系(xi)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)阻(zu)(zu)在(zai)(zai)電(dian)子產品(pin)中(zhong)(zhong)(zhong)是最(zui)常用的器(qi)件之(zhi)一(yi)，基本上(shang)只要是電(dian)子產品(pin)，內部就會存在(zai)(zai)電(dian)阻(zu)(zu)。電(dian)阻(zu)(zu)可以(yi)(yi)在(zai)(zai)電(dian)路中(zhong)(zhong)(zhong)用作分壓器(qi)、分流器(qi)和負載電(dian)阻(zu)(zu)；它與電(dian)容(rong)器(qi)—起可以(yi)(yi)組成濾波器(qi)及(ji)延時電(dian)路；在(zai)(zai)電(dian)源電(dian)路或控制電(dian)路中(zhong)(zhong)(zhong)用作取樣(yang)電(dian)阻(zu)(zu)；在(zai)(zai)半導(dao)體管電(dian)路中(zhong)(zhong)(zhong)用作偏(pian)置電(dian)阻(zu)(zu)確定工作點；使...

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