又叫外置電源，是小型便攜式電子設備及電子電器的供電電壓變換設備，常見于手機、液晶顯示器和筆記本電腦等小型電子產品上。接下來飛天鷹科技來給您介紹一下筆記本電源適配器的使用說明。

在電(dian)(dian)(dian)源(yuan)適配器的標(biao)簽上面一(yi)(yi)般(ban)會有幾(ji)項(xiang)是(shi)(shi)(shi)需要(yao)注意的。第一(yi)(yi)，是(shi)(shi)(shi)型(xing)號，它告訴了我們幾(ji)個(ge)(ge)信息(xi)，就(jiu)是(shi)(shi)(shi)它的廠商、主(zhu)要(yao)參數等，XVE開(kai)頭(tou)的一(yi)(yi)般(ban)就(jiu)是(shi)(shi)(shi)某某公司代號，120100就(jiu)是(shi)(shi)(shi)說明(ming)這(zhe)個(ge)(ge)電(dian)(dian)(dian)源(yuan)是(shi)(shi)(shi)12W的，050200的就(jiu)是(shi)(shi)(shi)10W的；第二就(jiu)是(shi)(shi)(shi)INPUT（輸入），在中國(guo)通(tong)用的一(yi)(yi)般(ban)是(shi)(shi)(shi)100-240V~50-60Hz，這(zhe)說明(ming)這(zhe)個(ge)(ge)adapter可(ke)以(yi)在100V-240V的電(dian)(dian)(dian)壓(ya)下面正常工作；第三就(jiu)是(shi)(shi)(shi)adapter的OUTPUT（輸出），兩個(ge)(ge)數字可(ke)以(yi)很快速的算出這(zhe)個(ge)(ge)電(dian)(dian)(dian)源(yuan)的瓦數，例如電(dian)(dian)(dian)壓(ya)12V*電(dian)(dian)(dian)流1A=12W（功率），說明(ming)這(zhe)個(ge)(ge)電(dian)(dian)(dian)源(yuan)就(jiu)是(shi)(shi)(shi)12W的。

多數筆記本(ben)電(dian)(dian)(dian)(dian)(dian)腦(nao)的(de)電(dian)(dian)(dian)(dian)(dian)源(yuan)(yuan)(yuan)(yuan)適配(pei)器(qi)可以適合用于100～240V交(jiao)流(liu)電(dian)(dian)(dian)(dian)(dian)（50/60Hz）。基(ji)本(ben)上(shang)大部份的(de)筆記本(ben)電(dian)(dian)(dian)(dian)(dian)腦(nao)都把電(dian)(dian)(dian)(dian)(dian)源(yuan)(yuan)(yuan)(yuan)外置(zhi)，用一(yi)條(tiao)電(dian)(dian)(dian)(dian)(dian)源(yuan)(yuan)(yuan)(yuan)線和(he)主機(ji)連接，這樣(yang)可以縮小主機(ji)的(de)體積和(he)重量(liang)，只有(you)極少(shao)數的(de)機(ji)型把電(dian)(dian)(dian)(dian)(dian)源(yuan)(yuan)(yuan)(yuan)內置(zhi)在主機(ji)內。在電(dian)(dian)(dian)(dian)(dian)源(yuan)(yuan)(yuan)(yuan)適配(pei)器(qi)上(shang)都有(you)一(yi)個銘(ming)牌(pai)，上(shang)面標示(shi)著功率(lv)，輸(shu)(shu)入(ru)輸(shu)(shu)出電(dian)(dian)(dian)(dian)(dian)壓(ya)和(he)電(dian)(dian)(dian)(dian)(dian)流(liu)量(liang)等指(zhi)標，特別要注意輸(shu)(shu)入(ru)電(dian)(dian)(dian)(dian)(dian)壓(ya)的(de)范圍，這就是所謂的(de)“旅行電(dian)(dian)(dian)(dian)(dian)源(yuan)(yuan)(yuan)(yuan)適配(pei)器(qi)”，如(ru)果到市(shi)(shi)電(dian)(dian)(dian)(dian)(dian)電(dian)(dian)(dian)(dian)(dian)壓(ya)只有(you)110V的(de)國家時，這個特性(xing)就很有(you)用了，有(you)些水貨(huo)筆記本(ben)電(dian)(dian)(dian)(dian)(dian)腦(nao)是只在原產地(di)銷售的(de)，沒有(you)這種(zhong)兼容電(dian)(dian)(dian)(dian)(dian)壓(ya)設計，甚至只有(you)110V的(de)單一(yi)輸(shu)(shu)入(ru)電(dian)(dian)(dian)(dian)(dian)壓(ya)，在我國的(de)220V市(shi)(shi)電(dian)(dian)(dian)(dian)(dian)電(dian)(dian)(dian)(dian)(dian)壓(ya)下插上(shang)就會燒毀。