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。
　　多數筆(bi)記本電(dian)(dian)(dian)(dian)(dian)腦(nao)的(de)(de)電(dian)(dian)(dian)(dian)(dian)源(yuan)適配(pei)器(qi)(qi)可以適合(he)用于100~240V交流(liu)電(dian)(dian)(dian)(dian)(dian)(50/60Hz)。基本上(shang)(shang)大部份的(de)(de)筆(bi)記本電(dian)(dian)(dian)(dian)(dian)腦(nao)都(dou)把電(dian)(dian)(dian)(dian)(dian)源(yuan)外置，用一條電(dian)(dian)(dian)(dian)(dian)源(yuan)線和主(zhu)(zhu)機(ji)連接(jie)，這樣可以縮(suo)小主(zhu)(zhu)機(ji)的(de)(de)體(ti)積和重量，只有(you)極少數的(de)(de)機(ji)型把電(dian)(dian)(dian)(dian)(dian)源(yuan)內置在主(zhu)(zhu)機(ji)內。在電(dian)(dian)(dian)(dian)(dian)源(yuan)適配(pei)器(qi)(qi)上(shang)(shang)都(dou)有(you)一個銘牌，上(shang)(shang)面(mian)標(biao)示(shi)著功(gong)率，輸入輸出電(dian)(dian)(dian)(dian)(dian)壓和電(dian)(dian)(dian)(dian)(dian)流(liu)量等指標(biao)，特別要(yao)注意輸入電(dian)(dian)(dian)(dian)(dian)壓的(de)(de)范(fan)圍，這就是(shi)所謂的(de)(de)“旅行(xing)電(dian)(dian)(dian)(dian)(dian)源(yuan)適配(pei)器(qi)(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(chong)電(dian)器是采用(yong)(yong)電(dian)力(li)電(dian)子半(ban)導體器件，將電(dian)壓和(he)頻率固定不(bu)變的(de)交(jiao)流(liu)電(dian)變換為(wei)直流(liu)電(dian)的(de)一種靜(jing)止(zhi)變流(liu)裝置(zhi)。在(zai)以蓄(xu)電(dian)池為(wei)工(gong)作電(dian)源(yuan)或(huo)備(bei)用(yong)(yong)電(dian)源(yuan)的(de)用(yong)(yong)電(dian)場合，充(chong)電(dian)器具有廣(guang)泛的(de)應用(yong)(yong)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)(chong)電(dian)(dian)器(qi)(qi)與適配器(qi)(qi)最大的區別在于：充(chong)(chong)電(dian)(dian)器(qi)(qi)只是(shi)給電(dian)(dian)池充(chong)(chong)電(dian)(dian)，而適配器(qi)(qi)不僅能給電(dian)(dian)池充(chong)(chong)電(dian)(dian)，還能給主機供電(dian)(dian)。