什么是電源適配器?使用電源適配器相對有哪些(xie)作用呢?在什(shen)么(me)情況下(xia)用外置的(de)電源適配器比(bi)較好呢?下(xia)面小(xiao)編(bian)就這些(xie)問(wen)題做簡單(dan)介紹。

　　什么是電源適配器?定義?

　　電(dian)(dian)(dian)(dian)(dian)(dian)源(yuan)(yuan)適(shi)(shi)配器(qi)(qi)是(shi)小型(xing)便攜式(shi)(shi)(shi)電(dian)(dian)(dian)(dian)(dian)(dian)子(zi)(zi)設(she)備(bei)及電(dian)(dian)(dian)(dian)(dian)(dian)子(zi)(zi)電(dian)(dian)(dian)(dian)(dian)(dian)器(qi)(qi)的供電(dian)(dian)(dian)(dian)(dian)(dian)電(dian)(dian)(dian)(dian)(dian)(dian)源(yuan)(yuan)變(bian)換設(she)備(bei)，一般(ban)由(you)外殼、電(dian)(dian)(dian)(dian)(dian)(dian)源(yuan)(yuan)變(bian)壓(ya)(ya)器(qi)(qi)和(he)(he)(he)整流電(dian)(dian)(dian)(dian)(dian)(dian)路(lu)組成(cheng)，按其輸(shu)入(ru)(ru)類型(xing)可(ke)分(fen)為(wei)交(jiao)流電(dian)(dian)(dian)(dian)(dian)(dian)源(yuan)(yuan)適(shi)(shi)配器(qi)(qi)和(he)(he)(he)直流電(dian)(dian)(dian)(dian)(dian)(dian)源(yuan)(yuan)適(shi)(shi)配器(qi)(qi);按連接方(fang)式(shi)(shi)(shi)可(ke)分(fen)為(wei)插墻式(shi)(shi)(shi)電(dian)(dian)(dian)(dian)(dian)(dian)源(yuan)(yuan)適(shi)(shi)配器(qi)(qi)和(he)(he)(he)桌(zhuo)面式(shi)(shi)(shi)電(dian)(dian)(dian)(dian)(dian)(dian)源(yuan)(yuan)適(shi)(shi)配器(qi)(qi)。廣泛配套于電(dian)(dian)(dian)(dian)(dian)(dian)話(hua)子(zi)(zi)母機、游戲機、語言復讀機、隨身(shen)聽(ting)、筆記(ji)(ji)本計算機、蜂(feng)窩電(dian)(dian)(dian)(dian)(dian)(dian)話(hua)等(deng)設(she)備(bei)中。在(zai)電(dian)(dian)(dian)(dian)(dian)(dian)源(yuan)(yuan)適(shi)(shi)配器(qi)(qi)上都有一個銘牌，上面標示(shi)著功(gong)率，輸(shu)入(ru)(ru)輸(shu)出電(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)和(he)(he)(he)電(dian)(dian)(dian)(dian)(dian)(dian)流量等(deng)指標，特別(bie)要注意輸(shu)入(ru)(ru)電(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)的范圍，這(zhe)就是(shi)所(suo)謂的“旅行電(dian)(dian)(dian)(dian)(dian)(dian)源(yuan)(yuan)適(shi)(shi)配器(qi)(qi)”，如(ru)果到市(shi)電(dian)(dian)(dian)(dian)(dian)(dian)電(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)只有100V的國家(jia)時，這(zhe)個特性就很有用了，有些水(shui)貨筆記(ji)(ji)本電(dian)(dian)(dian)(dian)(dian)(dian)腦是(shi)只在(zai)原產地銷售的，沒(mei)有這(zhe)種設(she)計，甚至只有100V的單一輸(shu)入(ru)(ru)電(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)，在(zai)我國的220V市(shi)電(dian)(dian)(dian)(dian)(dian)(dian)電(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)下插上就會燒毀(hui)。

　　電(dian)源(yuan)(yuan)(yuan)適配(pei)(pei)器(qi)(qi)(qi)的(de)(de)(de)(de)(de)作用(yong)(yong)就(jiu)是(shi)提供設備(bei)(bei)(bei)正常(chang)(chang)工作所需要的(de)(de)(de)(de)(de)能量。就(jiu)是(shi)給設備(bei)(bei)(bei)供電(dian)。有的(de)(de)(de)(de)(de)外置有的(de)(de)(de)(de)(de)內置，與設備(bei)(bei)(bei)的(de)(de)(de)(de)(de)應用(yong)(yong)和設計者有關。 因(yin)(yin)為電(dian)源(yuan)(yuan)(yuan)適配(pei)(pei)器(qi)(qi)(qi)上有相應的(de)(de)(de)(de)(de)過溫(wen)保護(hu)功能，因(yin)(yin)此使(shi)用(yong)(yong)電(dian)源(yuan)(yuan)(yuan)適配(pei)(pei)器(qi)(qi)(qi)可(ke)以保護(hu)設備(bei)(bei)(bei)不受(shou)高溫(wen)的(de)(de)(de)(de)(de)損害，穩定(ding)(ding)可(ke)靠的(de)(de)(de)(de)(de)工作，同時(shi)具有過流(liu)、過壓(ya)、過載(zai)保護(hu)功能，使(shi)設備(bei)(bei)(bei)不會因(yin)(yin)為電(dian)流(liu)、電(dian)壓(ya)等(deng)的(de)(de)(de)(de)(de)波(bo)動(dong)而損壞。外置的(de)(de)(de)(de)(de)電(dian)源(yuan)(yuan)(yuan)適配(pei)(pei)器(qi)(qi)(qi)使(shi)用(yong)(yong)比較靈活，只要可(ke)以符合設備(bei)(bei)(bei)要求的(de)(de)(de)(de)(de)參數，就(jiu)可(ke)以使(shi)用(yong)(yong)同一個適配(pei)(pei)器(qi)(qi)(qi)。不過為保證設備(bei)(bei)(bei)的(de)(de)(de)(de)(de)正常(chang)(chang)運行，選(xuan)擇時(shi)一定(ding)(ding)要選(xuan)擇正規廠家生(sheng)產的(de)(de)(de)(de)(de)電(dian)源(yuan)(yuan)(yuan)適配(pei)(pei)器(qi)(qi)(qi)。