選購LED驅動電源七要素

   1高可靠性

　　LED產品主要是有LED芯片和電源，散熱外殼，控制電路等組成。其中LED電源的好壞直接影響了產品的好壞。特別是LED路燈產品，由于裝在高空，維修不方便，維修的花費也大。

　　2高效率

　　LED是節能(neng)產品，驅(qu)動電(dian)源也(ye)要符合節能(neng)的要求(qiu)。特別是電(dian)源安裝在燈(deng)具內的結構，尤為(wei)重要。因為(wei)LED的發(fa)光(guang)效率(lv)隨著LED溫度(du)的升(sheng)高而下降。電(dian)源的效率(lv)高，它的耗損功率(lv)小，在燈(deng)具內發(fa)熱量(liang)就小，也(ye)就降低了燈(deng)具的溫升(sheng)。對延緩LED的光(guang)衰有(you)利。

　　3恒流驅動(dong)方式

　　為了配合LED的伏安特性，所以LED電源必須使用恒流驅動(dong)的方(fang)式。

　　4浪涌保護

　　LED抗沖擊(ji)能力比(bi)較(jiao)差，所以(yi)要(yao)加強這方面的(de)(de)保護。特別是一些裝在戶(hu)外的(de)(de)產品，電(dian)網負載的(de)(de)啟(qi)停和(he)雷擊(ji)都會對電(dian)源有沖擊(ji)。因此(ci)LED驅動(dong)電(dian)源的(de)(de)輸入端要(yao)有抑制浪涌的(de)(de)保護電(dian)路，避(bi)免(mian)開關瞬間損壞LED。

　　5溫度保(bao)護功能

　　電源除(chu)了常規(gui)的保(bao)護功能外，最好在(zai)恒流(liu)輸出中增加(jia)LED芯(xin)片溫度(du)負反饋，防止LED芯(xin)片PN結溫度(du)過高。

　　6LED電源壽命

　 　要(yao)提(ti)高LED驅動(dong)電(dian)(dian)(dian)(dian)(dian)(dian)源壽(shou)(shou)命，就(jiu)需要(yao)從多方面來改(gai)善：使用較高壽(shou)(shou)命的(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)(dian)容(rong)，提(ti)高電(dian)(dian)(dian)(dian)(dian)(dian)源效率(lv)，做好電(dian)(dian)(dian)(dian)(dian)(dian)源的(de)(de)(de)散熱(re)功(gong)能，優化(hua)燈具(ju)的(de)(de)(de)散熱(re)設計(ji)(ji)。LED電(dian)(dian)(dian)(dian)(dian)(dian)源屬于(yu)(yu)開(kai)(kai)關電(dian)(dian)(dian)(dian)(dian)(dian) 源，開(kai)(kai)關電(dian)(dian)(dian)(dian)(dian)(dian)源的(de)(de)(de)質量與可(ke)靠(kao)性取決(jue)于(yu)(yu)其電(dian)(dian)(dian)(dian)(dian)(dian)路設計(ji)(ji)，生產工(gong)藝，及器件的(de)(de)(de)質量。電(dian)(dian)(dian)(dian)(dian)(dian)解(jie)電(dian)(dian)(dian)(dian)(dian)(dian)容(rong)是大功(gong)率(lv)開(kai)(kai)關電(dian)(dian)(dian)(dian)(dian)(dian)源中必(bi)不(bu)可(ke)少的(de)(de)(de)組成(cheng)部分。而開(kai)(kai)關電(dian)(dian)(dian)(dian)(dian)(dian)源的(de)(de)(de)正常工(gong)作壽(shou)(shou)命要(yao)取決(jue) 于(yu)(yu)電(dian)(dian)(dian)(dian)(dian)(dian)源所使用的(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)(dian)解(jie)電(dian)(dian)(dian)(dian)(dian)(dian)容(rong)的(de)(de)(de)壽(shou)(shou)命，電(dian)(dian)(dian)(dian)(dian)(dian)解(jie)電(dian)(dian)(dian)(dian)(dian)(dian)容(rong)的(de)(de)(de)壽(shou)(shou)命又取決(jue)于(yu)(yu)電(dian)(dian)(dian)(dian)(dian)(dian)容(rong)本身的(de)(de)(de)壽(shou)(shou)命及工(gong)作溫度，電(dian)(dian)(dian)(dian)(dian)(dian)解(jie)電(dian)(dian)(dian)(dian)(dian)(dian)容(rong)在不(bu)同的(de)(de)(de)溫度下(xia)其工(gong)作壽(shou)(shou)命差異很大。

　　7工作環境(jing)

　　由于(yu)各(ge)個(ge)地方環(huan)(huan)境(jing)的(de)不同，要(yao)著重考慮LED燈具工作(zuo)場所的(de)環(huan)(huan)境(jing)，如：溫度(du)、濕度(du)、安裝位(wei)置等(deng)。

（漢鼎LED路燈采用明偉電源，質量保證！）