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(ben)電(dian)(dian)(dian)(dian)腦的(de)(de)(de)電(dian)(dian)(dian)(dian)源(yuan)適配器(qi)可(ke)以適合用于(yu)100~240V交流(liu)電(dian)(dian)(dian)(dian)(50/60Hz)。基(ji)本(ben)上大部份的(de)(de)(de)筆(bi)記本(ben)電(dian)(dian)(dian)(dian)腦都(dou)把(ba)(ba)電(dian)(dian)(dian)(dian)源(yuan)外(wai)置(zhi)，用一(yi)條(tiao)電(dian)(dian)(dian)(dian)源(yuan)線和主(zhu)機(ji)(ji)(ji)連接，這(zhe)樣(yang)可(ke)以縮小主(zhu)機(ji)(ji)(ji)的(de)(de)(de)體(ti)積(ji)和重量，只有極少數(shu)的(de)(de)(de)機(ji)(ji)(ji)型把(ba)(ba)電(dian)(dian)(dian)(dian)源(yuan)內置(zhi)在主(zhu)機(ji)(ji)(ji)內。在電(dian)(dian)(dian)(dian)源(yuan)適配器(qi)上都(dou)有一(yi)個銘(ming)牌(pai)，上面標(biao)示著(zhu)功(gong)率，輸(shu)入輸(shu)出(chu)電(dian)(dian)(dian)(dian)壓(ya)和電(dian)(dian)(dian)(dian)流(liu)量等指標(biao)，特別要注意輸(shu)入電(dian)(dian)(dian)(dian)壓(ya)的(de)(de)(de)范圍，這(zhe)就是(shi)所謂(wei)的(de)(de)(de)“旅行電(dian)(dian)(dian)(dian)源(yuan)適配器(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)器是(shi)采用電(dian)(dian)(dian)力電(dian)(dian)(dian)子半導體器件，將電(dian)(dian)(dian)壓和(he)頻(pin)率固定(ding)不變(bian)(bian)的(de)交(jiao)流電(dian)(dian)(dian)變(bian)(bian)換為直流電(dian)(dian)(dian)的(de)一種(zhong)靜止變(bian)(bian)流裝(zhuang)置。在以(yi)蓄電(dian)(dian)(dian)池為工作電(dian)(dian)(dian)源(yuan)或(huo)備用電(dian)(dian)(dian)源(yuan)的(de)用電(dian)(dian)(dian)場合(he)，充電(dian)(dian)(dian)器具有廣(guang)泛(fan)的(de)應用前景。

　　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(chong)電(dian)器(qi)與適(shi)配(pei)器(qi)最大的區別在于：充(chong)電(dian)器(qi)只(zhi)是給電(dian)池(chi)(chi)充(chong)電(dian)，而適(shi)配(pei)器(qi)不僅能(neng)給電(dian)池(chi)(chi)充(chong)電(dian)，還能(neng)給主機供電(dian)。