一、電源適配器是什么

電(dian)(dian)(dian)(dian)(dian)源適配器又稱外置電(dian)(dian)(dian)(dian)(dian)源，是一種小型便攜式電(dian)(dian)(dian)(dian)(dian)子(zi)設(she)備及電(dian)(dian)(dian)(dian)(dian)子(zi)電(dian)(dian)(dian)(dian)(dian)器的(de)(de)供電(dian)(dian)(dian)(dian)(dian)電(dian)(dian)(dian)(dian)(dian)壓變(bian)換設(she)備，由(you)外殼、變(bian)壓器、電(dian)(dian)(dian)(dian)(dian)感(gan)、電(dian)(dian)(dian)(dian)(dian)容、控制IC、PCB板等元(yuan)器件組成(cheng)，它的(de)(de)作用(yong)主要是：將(jiang)電(dian)(dian)(dian)(dian)(dian)流(liu)(liu)由(you)交(jiao)流(liu)(liu)輸入轉(zhuan)換為直流(liu)(liu)輸出，把不穩定的(de)(de)電(dian)(dian)(dian)(dian)(dian)源通(tong)過轉(zhuan)化(hua)電(dian)(dian)(dian)(dian)(dian)路變(bian)成(cheng)電(dian)(dian)(dian)(dian)(dian)子(zi)產(chan)品需要的(de)(de)恒(heng)壓直流(liu)(liu)電(dian)(dian)(dian)(dian)(dian)，從而(er)給物體供電(dian)(dian)(dian)(dian)(dian)和充電(dian)(dian)(dian)(dian)(dian)。電(dian)(dian)(dian)(dian)(dian)源適配器可以(yi)看(kan)作是變(bian)壓器和整流(liu)(liu)器，可以(yi)起到(dao)保護電(dian)(dian)(dian)(dian)(dian)器和人(ren)身安全的(de)(de)作用(yong)。

二、電源適配器是充電器嗎

電(dian)(dian)(dian)(dian)(dian)(dian)(dian)源適配(pei)器(qi)(qi)(qi)(qi)(qi)并(bing)不(bu)是(shi)(shi)充(chong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)器(qi)(qi)(qi)(qi)(qi)，電(dian)(dian)(dian)(dian)(dian)(dian)(dian)源適配(pei)器(qi)(qi)(qi)(qi)(qi)是(shi)(shi)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)源開關，用于(yu)提(ti)供(gong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)力(li)能(neng)源，可以給(gei)投影儀、筆記本電(dian)(dian)(dian)(dian)(dian)(dian)(dian)腦、音(yin)響、凈水(shui)器(qi)(qi)(qi)(qi)(qi)等(deng)家用電(dian)(dian)(dian)(dian)(dian)(dian)(dian)器(qi)(qi)(qi)(qi)(qi)或電(dian)(dian)(dian)(dian)(dian)(dian)(dian)子產品提(ti)供(gong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)力(li)；而充(chong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)器(qi)(qi)(qi)(qi)(qi)是(shi)(shi)用來給(gei)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)池(chi)充(chong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)的，一(yi)般會根據(ju)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)池(chi)容量和充(chong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)特(te)性進行(xing)分階段充(chong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)，二(er)者(zhe)是(shi)(shi)不(bu)同(tong)的。電(dian)(dian)(dian)(dian)(dian)(dian)(dian)源適配(pei)器(qi)(qi)(qi)(qi)(qi)和電(dian)(dian)(dian)(dian)(dian)(dian)(dian)源充(chong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)器(qi)(qi)(qi)(qi)(qi)的區別還體現在定義、結(jie)構(gou)、電(dian)(dian)(dian)(dian)(dian)(dian)(dian)流模式、用途等(deng)方面，最大(da)的區別就是(shi)(shi)充(chong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)器(qi)(qi)(qi)(qi)(qi)只是(shi)(shi)給(gei)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)池(chi)充(chong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)，而電(dian)(dian)(dian)(dian)(dian)(dian)(dian)源適配(pei)器(qi)(qi)(qi)(qi)(qi)不(bu)僅能(neng)給(gei)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)池(chi)充(chong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)，還能(neng)給(gei)主機供(gong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)。

三、電源適配器可以通用嗎

一(yi)般情況下，電(dian)源適配(pei)器(qi)(qi)能(neng)否(fou)通(tong)(tong)(tong)用要(yao)滿足三個條件：輸出電(dian)壓必(bi)須相(xiang)同(tong)(tong)、輸出的(de)額定(ding)電(dian)流(liu)比原電(dian)器(qi)(qi)要(yao)求的(de)要(yao)大、接口(kou)相(xiang)同(tong)(tong)，如果這(zhe)三個方(fang)面都滿足的(de)話，可(ke)以(yi)臨時通(tong)(tong)(tong)用一(yi)下。不過需要(yao)注意的(de)是(shi)，部分電(dian)源適配(pei)器(qi)(qi)也(ye)是(shi)不可(ke)以(yi)通(tong)(tong)(tong)用的(de)，通(tong)(tong)(tong)用可(ke)能(neng)會導致電(dian)器(qi)(qi)燒壞(huai)、無法使用等問題(ti)，因此如果原來的(de)電(dian)源適配(pei)器(qi)(qi)損壞(huai)，建議還是(shi)聯系廠家購買一(yi)個原裝(zhuang)電(dian)源適配(pei)器(qi)(qi)比較好(hao)。

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。

電源適配器知識課堂>>