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一、電源適配器是什么

電(dian)(dian)(dian)(dian)(dian)源(yuan)適配器又(you)稱(cheng)外置電(dian)(dian)(dian)(dian)(dian)源(yuan)，是一種小型便攜(xie)式電(dian)(dian)(dian)(dian)(dian)子設備及電(dian)(dian)(dian)(dian)(dian)子電(dian)(dian)(dian)(dian)(dian)器的(de)供(gong)電(dian)(dian)(dian)(dian)(dian)電(dian)(dian)(dian)(dian)(dian)壓變(bian)換設備，由外殼、變(bian)壓器、電(dian)(dian)(dian)(dian)(dian)感、電(dian)(dian)(dian)(dian)(dian)容、控制IC、PCB板等元(yuan)器件(jian)組成，它的(de)作用主要(yao)是：將電(dian)(dian)(dian)(dian)(dian)流由交流輸入轉換為(wei)直(zhi)流輸出，把不穩定(ding)的(de)電(dian)(dian)(dian)(dian)(dian)源(yuan)通過轉化(hua)電(dian)(dian)(dian)(dian)(dian)路變(bian)成電(dian)(dian)(dian)(dian)(dian)子產品(pin)需要(yao)的(de)恒壓直(zhi)流電(dian)(dian)(dian)(dian)(dian)，從(cong)而給物體供(gong)電(dian)(dian)(dian)(dian)(dian)和(he)充電(dian)(dian)(dian)(dian)(dian)。電(dian)(dian)(dian)(dian)(dian)源(yuan)適配器可(ke)(ke)以看作是變(bian)壓器和(he)整流器，可(ke)(ke)以起到保護(hu)電(dian)(dian)(dian)(dian)(dian)器和(he)人身安全的(de)作用。

二、電源適配器是充電器嗎

電(dian)(dian)源(yuan)(yuan)(yuan)適(shi)配(pei)器(qi)(qi)(qi)并不(bu)(bu)是充(chong)(chong)電(dian)(dian)器(qi)(qi)(qi)，電(dian)(dian)源(yuan)(yuan)(yuan)適(shi)配(pei)器(qi)(qi)(qi)是電(dian)(dian)源(yuan)(yuan)(yuan)開關，用(yong)于(yu)提供電(dian)(dian)力能源(yuan)(yuan)(yuan)，可以(yi)給(gei)(gei)投影儀、筆記本(ben)電(dian)(dian)腦、音(yin)響、凈水器(qi)(qi)(qi)等家用(yong)電(dian)(dian)器(qi)(qi)(qi)或電(dian)(dian)子產(chan)品提供電(dian)(dian)力；而充(chong)(chong)電(dian)(dian)器(qi)(qi)(qi)是用(yong)來給(gei)(gei)電(dian)(dian)池(chi)充(chong)(chong)電(dian)(dian)的，一(yi)般會根(gen)據(ju)電(dian)(dian)池(chi)容量和充(chong)(chong)電(dian)(dian)特性(xing)進行分(fen)階段充(chong)(chong)電(dian)(dian)，二者是不(bu)(bu)同(tong)的。電(dian)(dian)源(yuan)(yuan)(yuan)適(shi)配(pei)器(qi)(qi)(qi)和電(dian)(dian)源(yuan)(yuan)(yuan)充(chong)(chong)電(dian)(dian)器(qi)(qi)(qi)的區別(bie)還體現(xian)在定義、結構、電(dian)(dian)流模式、用(yong)途等方面(mian)，最(zui)大的區別(bie)就是充(chong)(chong)電(dian)(dian)器(qi)(qi)(qi)只是給(gei)(gei)電(dian)(dian)池(chi)充(chong)(chong)電(dian)(dian)，而電(dian)(dian)源(yuan)(yuan)(yuan)適(shi)配(pei)器(qi)(qi)(qi)不(bu)(bu)僅能給(gei)(gei)電(dian)(dian)池(chi)充(chong)(chong)電(dian)(dian)，還能給(gei)(gei)主機供電(dian)(dian)。

三、電源適配器可以通用嗎

一般情況(kuang)下(xia)(xia)，電(dian)(dian)(dian)(dian)源適配(pei)器(qi)(qi)能(neng)否通(tong)(tong)用(yong)(yong)要(yao)(yao)滿足三個條(tiao)件：輸出電(dian)(dian)(dian)(dian)壓必須相(xiang)同、輸出的(de)額(e)定電(dian)(dian)(dian)(dian)流比(bi)(bi)原(yuan)電(dian)(dian)(dian)(dian)器(qi)(qi)要(yao)(yao)求(qiu)的(de)要(yao)(yao)大、接口相(xiang)同，如果這三個方面都(dou)滿足的(de)話，可(ke)以(yi)臨時通(tong)(tong)用(yong)(yong)一下(xia)(xia)。不過需要(yao)(yao)注意的(de)是，部分電(dian)(dian)(dian)(dian)源適配(pei)器(qi)(qi)也是不可(ke)以(yi)通(tong)(tong)用(yong)(yong)的(de)，通(tong)(tong)用(yong)(yong)可(ke)能(neng)會導(dao)致電(dian)(dian)(dian)(dian)器(qi)(qi)燒壞、無法(fa)使(shi)用(yong)(yong)等(deng)問題，因(yin)此如果原(yuan)來的(de)電(dian)(dian)(dian)(dian)源適配(pei)器(qi)(qi)損(sun)壞，建(jian)議還是聯系廠家購買一個原(yuan)裝電(dian)(dian)(dian)(dian)源適配(pei)器(qi)(qi)比(bi)(bi)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。