1.什么叫電源適配器？
　　電源適配器是小型便攜式電子設備及電子電器的供電電源變換設備，一般由外殼、電源變壓器和整流電路組成，按其輸出類型可分為交流輸出型和直流輸出型；按連接方式可分為插墻式和桌面式。廣泛配套于電話子母機、游戲機、語言復讀機、隨身聽、筆記本計算機、蜂窩電話等設備中。
　　多數(shu)筆(bi)記本電(dian)(dian)(dian)腦的(de)電(dian)(dian)(dian)源(yuan)適(shi)配器(qi)可以適(shi)合用于(yu)100~240V交流電(dian)(dian)(dian)(50/60Hz)。基本上大部(bu)份的(de)筆(bi)記本電(dian)(dian)(dian)腦都把(ba)電(dian)(dian)(dian)源(yuan)外置，用一條(tiao)電(dian)(dian)(dian)源(yuan)線和(he)主(zhu)機(ji)連接(jie)，這樣可以縮小(xiao)主(zhu)機(ji)的(de)體積和(he)重量，只有(you)極少(shao)數(shu)的(de)機(ji)型把(ba)電(dian)(dian)(dian)源(yuan)內置在(zai)主(zhu)機(ji)內。在(zai)電(dian)(dian)(dian)源(yuan)適(shi)配器(qi)上都有(you)一個銘(ming)牌，上面標(biao)示著功率，輸入(ru)輸出電(dian)(dian)(dian)壓和(he)電(dian)(dian)(dian)流量等指標(biao)，特(te)別要注(zhu)意輸入(ru)電(dian)(dian)(dian)壓的(de)范(fan)圍，這就是所謂的(de)“旅(lv)行電(dian)(dian)(dian)源(yuan)適(shi)配器(qi)”。

　　2.什么叫充電器？
　　充電器通常指的是一種將交流電轉換為低壓直流電的設備。充電器在各個領域用途廣泛，特別是在生活領域被廣泛用于手機、相機等等常見電器。
　　充電(dian)(dian)(dian)(dian)(dian)器是采用(yong)電(dian)(dian)(dian)(dian)(dian)力電(dian)(dian)(dian)(dian)(dian)子半導體器件，將(jiang)電(dian)(dian)(dian)(dian)(dian)壓和頻率固定不變的交(jiao)流(liu)電(dian)(dian)(dian)(dian)(dian)變換為(wei)直流(liu)電(dian)(dian)(dian)(dian)(dian)的一(yi)種(zhong)靜止變流(liu)裝置。在以蓄電(dian)(dian)(dian)(dian)(dian)池為(wei)工(gong)作電(dian)(dian)(dian)(dian)(dian)源或備用(yong)電(dian)(dian)(dian)(dian)(dian)源的用(yong)電(dian)(dian)(dian)(dian)(dian)場合，充電(dian)(dian)(dian)(dian)(dian)器具有廣泛的應(ying)用(yong)前(qian)景(jing)。

　　3.電源適配器和充電器的區別：
　　充電器包含適配器的功能，但充電器內部還有恒流、恒壓等滿足充電特征的控制電路，適配器的充電控制電路一般放在主機上完成。比如手機充電器以及筆記本電腦充電器其實只是個電源適配器，它內部是不包括充電控制電路的，充電的控制是在手機和電腦內部完成的。
　　充電(dian)器(qi)與適配器(qi)最(zui)大的區別(bie)在于：充電(dian)器(qi)只是給電(dian)池充電(dian)，而適配器(qi)不(bu)僅能(neng)給電(dian)池充電(dian)，還能(neng)給主機供電(dian)。