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一、電源適配器是什么

電(dian)(dian)(dian)源適(shi)配器(qi)(qi)又稱外(wai)置電(dian)(dian)(dian)源，是(shi)一(yi)種(zhong)小型(xing)便攜式電(dian)(dian)(dian)子(zi)設備及(ji)電(dian)(dian)(dian)子(zi)電(dian)(dian)(dian)器(qi)(qi)的(de)(de)供(gong)電(dian)(dian)(dian)電(dian)(dian)(dian)壓(ya)變(bian)換(huan)(huan)設備，由外(wai)殼、變(bian)壓(ya)器(qi)(qi)、電(dian)(dian)(dian)感、電(dian)(dian)(dian)容(rong)、控制IC、PCB板等元器(qi)(qi)件組成，它的(de)(de)作用主要是(shi)：將(jiang)電(dian)(dian)(dian)流(liu)由交流(liu)輸入轉換(huan)(huan)為直流(liu)輸出(chu)，把不穩定的(de)(de)電(dian)(dian)(dian)源通(tong)過轉化電(dian)(dian)(dian)路變(bian)成電(dian)(dian)(dian)子(zi)產(chan)品需(xu)要的(de)(de)恒壓(ya)直流(liu)電(dian)(dian)(dian)，從(cong)而(er)給(gei)物體供(gong)電(dian)(dian)(dian)和充電(dian)(dian)(dian)。電(dian)(dian)(dian)源適(shi)配器(qi)(qi)可(ke)以看(kan)作是(shi)變(bian)壓(ya)器(qi)(qi)和整流(liu)器(qi)(qi)，可(ke)以起到(dao)保護電(dian)(dian)(dian)器(qi)(qi)和人身安(an)全(quan)的(de)(de)作用。

二、電源適配器是充電器嗎

電(dian)源(yuan)(yuan)(yuan)(yuan)(yuan)(yuan)適配(pei)器(qi)并不(bu)是(shi)充(chong)電(dian)器(qi)，電(dian)源(yuan)(yuan)(yuan)(yuan)(yuan)(yuan)適配(pei)器(qi)是(shi)電(dian)源(yuan)(yuan)(yuan)(yuan)(yuan)(yuan)開(kai)關，用(yong)(yong)于提供電(dian)力能(neng)源(yuan)(yuan)(yuan)(yuan)(yuan)(yuan)，可以給投影儀、筆(bi)記本電(dian)腦、音響、凈水器(qi)等家用(yong)(yong)電(dian)器(qi)或電(dian)子(zi)產(chan)品提供電(dian)力；而充(chong)電(dian)器(qi)是(shi)用(yong)(yong)來給電(dian)池(chi)(chi)充(chong)電(dian)的，一般會根據電(dian)池(chi)(chi)容(rong)量和(he)充(chong)電(dian)特性(xing)進行分(fen)階段(duan)充(chong)電(dian)，二者是(shi)不(bu)同的。電(dian)源(yuan)(yuan)(yuan)(yuan)(yuan)(yuan)適配(pei)器(qi)和(he)電(dian)源(yuan)(yuan)(yuan)(yuan)(yuan)(yuan)充(chong)電(dian)器(qi)的區(qu)別還體現在定義、結構、電(dian)流模式(shi)、用(yong)(yong)途等方(fang)面，最大(da)的區(qu)別就是(shi)充(chong)電(dian)器(qi)只是(shi)給電(dian)池(chi)(chi)充(chong)電(dian)，而電(dian)源(yuan)(yuan)(yuan)(yuan)(yuan)(yuan)適配(pei)器(qi)不(bu)僅能(neng)給電(dian)池(chi)(chi)充(chong)電(dian)，還能(neng)給主機供電(dian)。

三、電源適配器可以通用嗎

一(yi)般情況(kuang)下(xia)，電(dian)(dian)源適(shi)(shi)配(pei)器(qi)能否通(tong)用(yong)(yong)(yong)要(yao)滿足三個條件：輸出(chu)電(dian)(dian)壓必須相(xiang)同、輸出(chu)的額定電(dian)(dian)流比原電(dian)(dian)器(qi)要(yao)求的要(yao)大、接口相(xiang)同，如果(guo)(guo)這(zhe)三個方面都滿足的話，可(ke)以臨(lin)時(shi)通(tong)用(yong)(yong)(yong)一(yi)下(xia)。不過需(xu)要(yao)注(zhu)意的是，部分電(dian)(dian)源適(shi)(shi)配(pei)器(qi)也是不可(ke)以通(tong)用(yong)(yong)(yong)的，通(tong)用(yong)(yong)(yong)可(ke)能會導致電(dian)(dian)器(qi)燒壞、無法(fa)使(shi)用(yong)(yong)(yong)等問題，因(yin)此如果(guo)(guo)原來的電(dian)(dian)源適(shi)(shi)配(pei)器(qi)損壞，建議還是聯(lian)系廠家購買一(yi)個原裝電(dian)(dian)源適(shi)(shi)配(pei)器(qi)比較(jiao)好。

四、電源適配器多少錢一個

電源適配器的價格并不高，根據輸入電壓大小、輸入電流類型、供電方式、電源安數等有所不同，價格大概在二十多元到四五十元左右，也有部分電源適配器產品可能會更貴一些。需要注意的是，電源適配器市場比較混亂，有一些比較便宜的電源適配器甚至只要幾塊錢，這種可能是以次充好、以舊充新的產品，不建議購買，要選擇正規優質的電源適配器品牌廠家購買產品。