是(shi)給監控攝(she)像頭(tou)、手(shou)機、筆(bi)記本電(dian)(dian)(dian)(dian)腦等電(dian)(dian)(dian)(dian)子設備充電(dian)(dian)(dian)(dian)供(gong)電(dian)(dian)(dian)(dian)的，電(dian)(dian)(dian)(dian)源適配器工(gong)作(zuo)原理簡(jian)單說就是(shi)把220V的交(jiao)流市電(dian)(dian)(dian)(dian)轉換為(wei)低壓直流電(dian)(dian)(dian)(dian)，為(wei)電(dian)(dian)(dian)(dian)子設備正常工(gong)作(zuo)提供(gong)穩(wen)定的電(dian)(dian)(dian)(dian)力。

電源適配器工作原理(li)

現實中我們(men)接觸到的(de)(de)(de)電源(yuan)(yuan)適(shi)配(pei)器多(duo)是(shi)開(kai)關(guan)電源(yuan)(yuan)。開(kai)關(guan)電源(yuan)(yuan)是(shi)指通過現代(dai)電子技(ji)術，控制開(kai)關(guan)管開(kai)通和關(guan)斷的(de)(de)(de)時間比率，維(wei)持穩定輸出電壓的(de)(de)(de)一種電源(yuan)(yuan)，電源(yuan)(yuan)適(shi)配(pei)器的(de)(de)(de)開(kai)關(guan)電源(yuan)(yuan)一般由(you)脈(mo)沖寬(kuan)度調制（PWM）控制IC和MOSFET構(gou)成。

好處(chu)：轉換效率(lv)高，體積小，可以(yi)在(zai)寬電壓范圍(wei)內工作。

不足：發生(sheng)故障時檢修難度較大(da)，對電源電路(lu)干擾較大(da)。

電(dian)(dian)(dian)源適(shi)配器(qi)工作原理就(jiu)是(shi)把不穩定(ding)的電(dian)(dian)(dian)源利(li)用(yong)開關電(dian)(dian)(dian)源的原理通過轉(zhuan)化電(dian)(dian)(dian)路變成筆(bi)記本電(dian)(dian)(dian)腦(nao)需要的恒壓直流電(dian)(dian)(dian)，給(gei)筆(bi)記本電(dian)(dian)(dian)腦(nao)供(gong)電(dian)(dian)(dian)和充電(dian)(dian)(dian)。這種轉(zhuan)化電(dian)(dian)(dian)路，一定(ding)有保(bao)護電(dian)(dian)(dian)路。

通過電(dian)源(yuan)適(shi)配(pei)器工(gong)作原(yuan)理可以知(zhi)道為什么電(dian)源(yuan)適(shi)配(pei)器在工(gong)作時(shi)容易發熱(re)，所以在使(shi)用(yong)時(shi)要注(zhu)意通風散熱(re)，保護好電(dian)源(yuan)適(shi)配(pei)器。