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一、電源適配器是什么

電(dian)(dian)(dian)源(yuan)(yuan)(yuan)適配器又稱外置電(dian)(dian)(dian)源(yuan)(yuan)(yuan)，是一(yi)種小型便攜式電(dian)(dian)(dian)子(zi)設備及電(dian)(dian)(dian)子(zi)電(dian)(dian)(dian)器的(de)(de)供(gong)電(dian)(dian)(dian)電(dian)(dian)(dian)壓(ya)變(bian)(bian)換設備，由(you)(you)外殼、變(bian)(bian)壓(ya)器、電(dian)(dian)(dian)感、電(dian)(dian)(dian)容、控制IC、PCB板等(deng)元器件組(zu)成，它的(de)(de)作用主要是：將電(dian)(dian)(dian)流(liu)由(you)(you)交流(liu)輸入轉(zhuan)換為直流(liu)輸出(chu)，把不(bu)穩定(ding)的(de)(de)電(dian)(dian)(dian)源(yuan)(yuan)(yuan)通過(guo)轉(zhuan)化(hua)電(dian)(dian)(dian)路變(bian)(bian)成電(dian)(dian)(dian)子(zi)產品需要的(de)(de)恒壓(ya)直流(liu)電(dian)(dian)(dian)，從而給物體供(gong)電(dian)(dian)(dian)和(he)充電(dian)(dian)(dian)。電(dian)(dian)(dian)源(yuan)(yuan)(yuan)適配器可以(yi)看作是變(bian)(bian)壓(ya)器和(he)整流(liu)器，可以(yi)起到保護電(dian)(dian)(dian)器和(he)人身安全(quan)的(de)(de)作用。

二、電源適配器是充電器嗎

電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)源(yuan)(yuan)適配(pei)器(qi)(qi)(qi)(qi)并不是充(chong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)器(qi)(qi)(qi)(qi)，電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)源(yuan)(yuan)適配(pei)器(qi)(qi)(qi)(qi)是電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)源(yuan)(yuan)開關，用(yong)(yong)于提供(gong)(gong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)力能源(yuan)(yuan)，可以(yi)給(gei)(gei)投(tou)影儀(yi)、筆記(ji)本(ben)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)腦、音響、凈水器(qi)(qi)(qi)(qi)等(deng)家用(yong)(yong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)器(qi)(qi)(qi)(qi)或電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)子產品提供(gong)(gong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)力；而充(chong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)器(qi)(qi)(qi)(qi)是用(yong)(yong)來給(gei)(gei)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)池(chi)充(chong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)的(de)，一般會根據電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)池(chi)容量和充(chong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)特(te)性進行分階段(duan)充(chong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)，二者是不同的(de)。電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)源(yuan)(yuan)適配(pei)器(qi)(qi)(qi)(qi)和電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)源(yuan)(yuan)充(chong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)器(qi)(qi)(qi)(qi)的(de)區別還體現(xian)在定義、結構(gou)、電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)流模式、用(yong)(yong)途等(deng)方面，最大的(de)區別就是充(chong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)器(qi)(qi)(qi)(qi)只是給(gei)(gei)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)池(chi)充(chong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)，而電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)源(yuan)(yuan)適配(pei)器(qi)(qi)(qi)(qi)不僅(jin)能給(gei)(gei)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)池(chi)充(chong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)，還能給(gei)(gei)主機供(gong)(gong)電(dian)(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)源適配器能(neng)否通(tong)(tong)用要(yao)滿足三個條件：輸出電(dian)壓必須相同、輸出的(de)額定電(dian)流比原電(dian)器要(yao)求的(de)要(yao)大、接口(kou)相同，如果這三個方面都滿足的(de)話，可以(yi)臨時通(tong)(tong)用一(yi)下。不(bu)過(guo)需(xu)要(yao)注意的(de)是(shi)，部分電(dian)源適配器也(ye)是(shi)不(bu)可以(yi)通(tong)(tong)用的(de)，通(tong)(tong)用可能(neng)會導(dao)致電(dian)器燒壞、無法使用等問題，因此(ci)如果原來的(de)電(dian)源適配器損壞，建(jian)議還是(shi)聯系廠家(jia)購(gou)買一(yi)個原裝電(dian)源適配器比較(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。