電(dian)(dian)源(yuan)適配器：一(yi)般由外(wai)殼(ke)、電(dian)(dian)源(yuan)變(bian)壓(ya)器和整流(liu)電(dian)(dian)路(lu)組成，按其(qi)輸出(chu)類型(xing)可(ke)分為交流(liu)輸出(chu)型(xing)和直流(liu)輸出(chu)型(xing)；按連接方式可(ke)分為插墻式和桌面式。廣泛應用(yong)于電(dian)(dian)話子母機、游戲機、語言復(fu)讀機、隨身聽、筆記本(ben)電(dian)(dian)腦、蜂窩電(dian)(dian)話等設(she)備(bei)中。它是一(yi)種(zhong)小型(xing)便(bian)攜式電(dian)(dian)子設(she)備(bei)及電(dian)(dian)子電(dian)(dian)器的供(gong)電(dian)(dian)電(dian)(dian)源(yuan)變(bian)換設(she)備(bei)。

此(ci)外它還有一個(ge)比較時髦的(de)名字：旅行(xing)電(dian)源(yuan)適配器。由于世(shi)界(jie)各(ge)國(guo)使用電(dian)源(yuan)電(dian)壓(ya)、頻(pin)率各(ge)不一樣，如：美(mei)國(guo)120V/60HZ、澳大利亞240V/50HZ、德國(guo)230V/50HZ、中(zhong)國(guo)220V/50HZ。對(dui)應著各(ge)國(guo)不同的(de)電(dian)壓(ya)、頻(pin)率，而(er)各(ge)個(ge)國(guo)電(dian)子(zi)設備（如電(dian)話子(zi)母機(ji)、游(you)戲(xi)機(ji)、語言復讀機(ji)、隨身聽、筆記本計(ji)算機(ji)等）要適應全(quan)世(shi)界(jie)的(de)電(dian)源(yuan)電(dian)壓(ya)、頻(pin)率；在(zai)這樣的(de)情況下電(dian)源(yuan)適配器起到(dao)了(le)不可(ke)或(huo)缺(que)的(de)作用。

科學技術(shu)(shu)不斷發展，各國的電(dian)(dian)(dian)源(yuan)適(shi)(shi)配器(qi)(qi)得到了(le)技術(shu)(shu)性的提(ti)升，各國的電(dian)(dian)(dian)源(yuan)適(shi)(shi)配器(qi)(qi)的適(shi)(shi)應輸入電(dian)(dian)(dian)壓(ya)適(shi)(shi)應范圍為：100-240V，輸入電(dian)(dian)(dian)壓(ya)頻率50/60HZ；從而滿(man)足了(le)電(dian)(dian)(dian)子設(she)(she)備的要求。因此(ci)電(dian)(dian)(dian)源(yuan)適(shi)(shi)配器(qi)(qi)被廣泛應用于(yu)筆記(ji)本電(dian)(dian)(dian)腦、液晶顯(xian)示器(qi)(qi)、游戲機等(deng)等(deng)電(dian)(dian)(dian)子設(she)(she)備。簡單的說，一適(shi)(shi)配器(qi)(qi)可(ke)配多(duo)種(zhong)插腳如：歐(ou)規、韓規、國標、美規等(deng)等(deng)，能適(shi)(shi)應世界各地(di)；有(you)點萬能充的感(gan)覺(jue)；萬能充與旅行電(dian)(dian)(dian)源(yuan)適(shi)(shi)配器(qi)(qi)的區別：萬能充只有(you)一種(zhong)插腳，而旅行電(dian)(dian)(dian)源(yuan)適(shi)(shi)配器(qi)(qi)將(jiang)有(you)多(duo)重插腳。