電源適配器又叫外置電(dian)(dian)(dian)源，是中(zhong)小型手持式電(dian)(dian)(dian)子(zi)設(she)備(bei)及電(dian)(dian)(dian)子(zi)電(dian)(dian)(dian)器的供電(dian)(dian)(dian)系統工作電(dian)(dian)(dian)壓變換(huan)設(she)備(bei)，多見于手機上、液晶顯(xian)示屏和筆(bi)記本等(deng)中(zhong)小型電(dian)(dian)(dian)子(zi)設(she)備(bei)上。下(xia)邊人們看(kan)一下(xia)電(dian)(dian)(dian)源適(shi)配(pei)器是什么主(zhu)要用途。

　　1、電(dian)(dian)源適配器(qi)(Poweradapter)是中小型手持式電(dian)(dian)子設(she)備及電(dian)(dian)子電(dian)(dian)器(qi)的(de)供(gong)電(dian)(dian)系統(tong)開(kai)關電(dian)(dian)源變換設(she)備，一般由(you)機殼、變電(dian)(dian)器(qi)、電(dian)(dian)感器(qi)、"電(dian)(dian)容器(qi)、操縱IC、PCB板等電(dian)(dian)子器(qi)件構成(cheng).

　　2、它的(de)原理由(you)溝通(tong)交流鍵入(ru)變(bian)換為(wei)直流電輸(shu)出(chu)按接口方式可分(fen)成插嵌(qian)墻和桌面型，普(pu)遍配(pei)套設施于智能(neng)安(an)防監(jian)控(kong)攝像(xiang)頭(tou)，電視機頂盒，無(wu)線路(lu)由(you),led燈(deng)條，按摩器(qi)等設備中

　　左右就是說電源(yuan)適配器的適用范圍。