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)(guan)電源高頻(pin)化是其發展的(de)方向，高頻(pin)化使開(kai)(kai)關(guan)(guan)電源小(xiao)型(xing)化，并使開(kai)(kai)關(guan)(guan)電源進(jin)入更(geng)廣泛的(de)應用(yong)領域，特別是在(zai)高新(xin)技術領域的(de)應用(yong)，推(tui)動(dong)了(le)高新(xin)技術產品的(de)小(xiao)型(xing)化、輕便(bian)化。另外開(kai)(kai)關(guan)(guan)電源的(de)發展與應用(yong)在(zai)節約(yue)能源、節約(yue)資源及保護環境方面都具(ju)有(you)重要的(de)意(yi)義。...
2019-7-15 開關電源與線性電源使用接線端子的區別!
開(kai)關電源的(de)調整(zheng)管工(gong)作在飽(bao)和和截至狀態，因(yin)而發熱(re)量小，效率高(75%以上)而且省掉了大(da)(da)體(ti)積(ji)的(de)變壓器。但開(kai)關電源輸(shu)出的(de)直流(liu)上面(mian)會疊加(jia)較大(da)(da)的(de)紋波(bo)(50mvat5voutputtypical)，在輸(shu)出端并(bing)接穩壓二極管可以改善，另外(wai)由于開(kai)關管工(gong)作是會...
2019-7-8 淺談電源模塊發展的開發設計要點
模(mo)塊(kuai)電(dian)源的(de)(de)薄(bo)型化、模(mo)塊(kuai)化、標準(zhun)化并以(yi)積木(mu)的(de)(de)體例進行組合的(de)(de)電(dian)路拓撲結構得到了日益(yi)廣泛的(de)(de)應用。如何敏捷推出(chu)高品質、高可靠性、低成本的(de)(de)模(mo)塊(kuai)電(dian)源以(yi)進步產品競爭力，還需要我們持(chi)續(xu)不斷的(de)(de)在(zai)電(dian)路、物(wu)料、生產工(gong)藝等多方面的(de)(de)提升(sheng)突破。...
2019-7-8 什么是開關電源模塊的阻抗
開關(guan)電(dian)(dian)(dian)源模塊阻抗(kang)(kang)(kang)是指內部電(dian)(dian)(dian)阻、電(dian)(dian)(dian)容(rong)(rong)(rong)和電(dian)(dian)(dian)感組(zu)成的電(dian)(dian)(dian)路對(dui)(dui)(dui)(dui)交(jiao)(jiao)流電(dian)(dian)(dian)起到阻礙作(zuo)用。電(dian)(dian)(dian)阻的阻抗(kang)(kang)(kang)就(jiu)是其本身，電(dian)(dian)(dian)容(rong)(rong)(rong)電(dian)(dian)(dian)感兩(liang)者對(dui)(dui)(dui)(dui)交(jiao)(jiao)流電(dian)(dian)(dian)的阻礙叫電(dian)(dian)(dian)抗(kang)(kang)(kang)。電(dian)(dian)(dian)容(rong)(rong)(rong)在(zai)電(dian)(dian)(dian)路中(zhong)(zhong)對(dui)(dui)(dui)(dui)交(jiao)(jiao)流電(dian)(dian)(dian)阻礙叫容(rong)(rong)(rong)抗(kang)(kang)(kang)，交(jiao)(jiao)流電(dian)(dian)(dian)頻(pin)率越(yue)大，容(rong)(rong)(rong)抗(kang)(kang)(kang)越(yue)小(xiao)，有隔直通交(jiao)(jiao)的作(zuo)用。電(dian)(dian)(dian)感在(zai)電(dian)(dian)(dian)路中(zhong)(zhong)對(dui)(dui)(dui)(dui)交(jiao)(jiao)流電(dian)(dian)(dian)阻礙叫感抗(kang)(kang)(kang)，交(jiao)(jiao)流...
2019-7-4 PFC電源與開關電源的區別
?PFC電(dian)源 PFC的(de)(de)英(ying)文全稱為“Power Factor Correction”，意思(si)是“功(gong)(gong)率(lv)因數校(xiao)正”，功(gong)(gong)率(lv)因數指(zhi)的(de)(de)是有(you)效(xiao)功(gong)(gong)率(lv)與總(zong)耗電(dian)量（視在(zai)功(gong)(gong)率(lv)）之間的(de)(de)關系，也(ye)就是有(you)效(xiao)功(gong)(gong)率(lv)除以總(zong)耗電(dian)量（視在(zai)功(gong)(gong)率(lv)）的(de)(de)比值(zhi)。 基本上功(gong)(gong)率(lv)因數...
2019-7-4 專業解讀變頻電源與變頻器的三大區別
變(bian)頻電(dian)源(yuan)用于把國內(nei)220V50Hz變(bian)為110V60Hz、220V60Hz。國內(nei)很多廠家說什么(me)負載都能帶(dai)。 變(bian)頻器：只適用于電(dian)動機傳(chuan)動。輸出220V、380V、660V等。而且頻率為0-400Hz。但只能帶(dai)電(dian)動機負載。他(ta)們原理(li)上有(you)什么(me)不(bu)同。 ...
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)源(UPS)在通(tong)信領(ling)域應用十(shi)分廣泛(fan)。在通(tong)信機房中安裝(zhuang)UPS(不(bu)間(jian)斷電(dian)源)供電(dian)系統越(yue)來越(yue)普遍(bian)。一個設(she)計良好的UPS供電(dian)系統能(neng)給負載提(ti)供優質電(dian)源。如何(he)建立一個合(he)理的、安全的UPS供電(dian)系統成為大家關(guan)注的問題。筆者從UPS供電(dian)系統配置各(ge)方面...
2019-7-3 電路設計中電阻的選擇及其作用
電(dian)(dian)阻(zu)在(zai)(zai)電(dian)(dian)子(zi)產(chan)品中是(shi)最(zui)常用的器(qi)(qi)件(jian)之一，基本上只(zhi)要是(shi)電(dian)(dian)子(zi)產(chan)品，內(nei)部就(jiu)會(hui)存在(zai)(zai)電(dian)(dian)阻(zu)。電(dian)(dian)阻(zu)可以(yi)在(zai)(zai)電(dian)(dian)路中用作分壓器(qi)(qi)、分流器(qi)(qi)和負(fu)載電(dian)(dian)阻(zu)；它與電(dian)(dian)容(rong)器(qi)(qi)—起可以(yi)組成(cheng)濾波(bo)器(qi)(qi)及延時(shi)電(dian)(dian)路；在(zai)(zai)電(dian)(dian)源(yuan)電(dian)(dian)路或控制電(dian)(dian)路中用作取樣電(dian)(dian)阻(zu)；在(zai)(zai)半導體管電(dian)(dian)路中用作偏置電(dian)(dian)阻(zu)確定工作點；使...
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