一、電源適配器是什么

電(dian)(dian)(dian)源適配(pei)器又稱外(wai)置電(dian)(dian)(dian)源，是一種小型便攜式(shi)電(dian)(dian)(dian)子設備(bei)及(ji)電(dian)(dian)(dian)子電(dian)(dian)(dian)器的(de)供電(dian)(dian)(dian)電(dian)(dian)(dian)壓(ya)變(bian)換設備(bei)，由(you)外(wai)殼、變(bian)壓(ya)器、電(dian)(dian)(dian)感(gan)、電(dian)(dian)(dian)容、控制IC、PCB板等(deng)元器件組成，它的(de)作用(yong)主要是：將電(dian)(dian)(dian)流由(you)交流輸(shu)入轉換為直(zhi)流輸(shu)出，把不穩定的(de)電(dian)(dian)(dian)源通過轉化電(dian)(dian)(dian)路變(bian)成電(dian)(dian)(dian)子產品需要的(de)恒壓(ya)直(zhi)流電(dian)(dian)(dian)，從而(er)給物(wu)體供電(dian)(dian)(dian)和(he)充電(dian)(dian)(dian)。電(dian)(dian)(dian)源適配(pei)器可以(yi)看作是變(bian)壓(ya)器和(he)整流器，可以(yi)起到保(bao)護電(dian)(dian)(dian)器和(he)人(ren)身安全的(de)作用(yong)。

二、電源適配器是充電器嗎

電(dian)(dian)源(yuan)適配器(qi)(qi)(qi)并不是(shi)(shi)充(chong)(chong)(chong)電(dian)(dian)器(qi)(qi)(qi)，電(dian)(dian)源(yuan)適配器(qi)(qi)(qi)是(shi)(shi)電(dian)(dian)源(yuan)開關，用于提供電(dian)(dian)力能(neng)(neng)源(yuan)，可以給(gei)投影儀、筆記本(ben)電(dian)(dian)腦、音響(xiang)、凈水器(qi)(qi)(qi)等家用電(dian)(dian)器(qi)(qi)(qi)或電(dian)(dian)子產品提供電(dian)(dian)力；而充(chong)(chong)(chong)電(dian)(dian)器(qi)(qi)(qi)是(shi)(shi)用來給(gei)電(dian)(dian)池(chi)(chi)充(chong)(chong)(chong)電(dian)(dian)的(de)，一般(ban)會(hui)根據電(dian)(dian)池(chi)(chi)容量和充(chong)(chong)(chong)電(dian)(dian)特性(xing)進行分階段充(chong)(chong)(chong)電(dian)(dian)，二者(zhe)是(shi)(shi)不同的(de)。電(dian)(dian)源(yuan)適配器(qi)(qi)(qi)和電(dian)(dian)源(yuan)充(chong)(chong)(chong)電(dian)(dian)器(qi)(qi)(qi)的(de)區別(bie)(bie)還(huan)體現在(zai)定義(yi)、結構、電(dian)(dian)流(liu)模式、用途等方(fang)面(mian)，最(zui)大的(de)區別(bie)(bie)就是(shi)(shi)充(chong)(chong)(chong)電(dian)(dian)器(qi)(qi)(qi)只是(shi)(shi)給(gei)電(dian)(dian)池(chi)(chi)充(chong)(chong)(chong)電(dian)(dian)，而電(dian)(dian)源(yuan)適配器(qi)(qi)(qi)不僅能(neng)(neng)給(gei)電(dian)(dian)池(chi)(chi)充(chong)(chong)(chong)電(dian)(dian)，還(huan)能(neng)(neng)給(gei)主機供電(dian)(dian)。

三、電源適配器可以通用嗎

一(yi)般情況下，電(dian)(dian)(dian)源(yuan)適(shi)配(pei)器能否通(tong)(tong)用(yong)要滿(man)足(zu)三個(ge)條件：輸(shu)出電(dian)(dian)(dian)壓必須相同(tong)、輸(shu)出的(de)(de)額定電(dian)(dian)(dian)流比原(yuan)電(dian)(dian)(dian)器要求的(de)(de)要大、接口相同(tong)，如果這三個(ge)方面都滿(man)足(zu)的(de)(de)話，可(ke)(ke)以臨(lin)時通(tong)(tong)用(yong)一(yi)下。不過需(xu)要注意的(de)(de)是，部分電(dian)(dian)(dian)源(yuan)適(shi)配(pei)器也是不可(ke)(ke)以通(tong)(tong)用(yong)的(de)(de)，通(tong)(tong)用(yong)可(ke)(ke)能會導致電(dian)(dian)(dian)器燒(shao)壞、無法使(shi)用(yong)等(deng)問(wen)題，因此(ci)如果原(yuan)來的(de)(de)電(dian)(dian)(dian)源(yuan)適(shi)配(pei)器損壞，建議(yi)還(huan)是聯系廠家購買一(yi)個(ge)原(yuan)裝(zhuang)電(dian)(dian)(dian)源(yuan)適(shi)配(pei)器比較好。

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。

電源適配器知識課堂>>