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一、電源適配器是什么

電(dian)(dian)(dian)(dian)(dian)源適配器(qi)(qi)(qi)又稱外置電(dian)(dian)(dian)(dian)(dian)源，是一種小型便攜(xie)式(shi)電(dian)(dian)(dian)(dian)(dian)子設(she)備及(ji)電(dian)(dian)(dian)(dian)(dian)子電(dian)(dian)(dian)(dian)(dian)器(qi)(qi)(qi)的供電(dian)(dian)(dian)(dian)(dian)電(dian)(dian)(dian)(dian)(dian)壓變(bian)(bian)換設(she)備，由外殼、變(bian)(bian)壓器(qi)(qi)(qi)、電(dian)(dian)(dian)(dian)(dian)感、電(dian)(dian)(dian)(dian)(dian)容(rong)、控制IC、PCB板等(deng)元器(qi)(qi)(qi)件組成，它的作(zuo)用(yong)主要是：將電(dian)(dian)(dian)(dian)(dian)流(liu)由交流(liu)輸入轉換為直流(liu)輸出，把(ba)不(bu)穩定的電(dian)(dian)(dian)(dian)(dian)源通(tong)過轉化(hua)電(dian)(dian)(dian)(dian)(dian)路變(bian)(bian)成電(dian)(dian)(dian)(dian)(dian)子產品需要的恒壓直流(liu)電(dian)(dian)(dian)(dian)(dian)，從(cong)而給物(wu)體供電(dian)(dian)(dian)(dian)(dian)和(he)(he)充電(dian)(dian)(dian)(dian)(dian)。電(dian)(dian)(dian)(dian)(dian)源適配器(qi)(qi)(qi)可(ke)以看作(zuo)是變(bian)(bian)壓器(qi)(qi)(qi)和(he)(he)整流(liu)器(qi)(qi)(qi)，可(ke)以起到保護電(dian)(dian)(dian)(dian)(dian)器(qi)(qi)(qi)和(he)(he)人身安全的作(zuo)用(yong)。

二、電源適配器是充電器嗎

電(dian)(dian)(dian)(dian)(dian)源適配(pei)器(qi)并不(bu)是(shi)充(chong)電(dian)(dian)(dian)(dian)(dian)器(qi)，電(dian)(dian)(dian)(dian)(dian)源適配(pei)器(qi)是(shi)電(dian)(dian)(dian)(dian)(dian)源開關(guan)，用于提供電(dian)(dian)(dian)(dian)(dian)力能源，可以(yi)給投影儀(yi)、筆記本電(dian)(dian)(dian)(dian)(dian)腦、音響、凈水器(qi)等家用電(dian)(dian)(dian)(dian)(dian)器(qi)或(huo)電(dian)(dian)(dian)(dian)(dian)子產品提供電(dian)(dian)(dian)(dian)(dian)力；而充(chong)電(dian)(dian)(dian)(dian)(dian)器(qi)是(shi)用來給電(dian)(dian)(dian)(dian)(dian)池(chi)充(chong)電(dian)(dian)(dian)(dian)(dian)的(de)(de)，一般會根據(ju)電(dian)(dian)(dian)(dian)(dian)池(chi)容(rong)量和充(chong)電(dian)(dian)(dian)(dian)(dian)特性進行分階段(duan)充(chong)電(dian)(dian)(dian)(dian)(dian)，二者是(shi)不(bu)同(tong)的(de)(de)。電(dian)(dian)(dian)(dian)(dian)源適配(pei)器(qi)和電(dian)(dian)(dian)(dian)(dian)源充(chong)電(dian)(dian)(dian)(dian)(dian)器(qi)的(de)(de)區別還體現在(zai)定(ding)義、結構、電(dian)(dian)(dian)(dian)(dian)流模(mo)式(shi)、用途(tu)等方面(mian)，最大的(de)(de)區別就是(shi)充(chong)電(dian)(dian)(dian)(dian)(dian)器(qi)只(zhi)是(shi)給電(dian)(dian)(dian)(dian)(dian)池(chi)充(chong)電(dian)(dian)(dian)(dian)(dian)，而電(dian)(dian)(dian)(dian)(dian)源適配(pei)器(qi)不(bu)僅能給電(dian)(dian)(dian)(dian)(dian)池(chi)充(chong)電(dian)(dian)(dian)(dian)(dian)，還能給主機供電(dian)(dian)(dian)(dian)(dian)。

三、電源適配器可以通用嗎

一般(ban)情況下，電(dian)(dian)(dian)源(yuan)適(shi)配(pei)器能(neng)否通(tong)用要(yao)滿足三(san)個條件(jian)：輸出電(dian)(dian)(dian)壓(ya)必須相同、輸出的額(e)定電(dian)(dian)(dian)流比原(yuan)電(dian)(dian)(dian)器要(yao)求的要(yao)大、接(jie)口相同，如果這三(san)個方(fang)面都(dou)滿足的話，可(ke)(ke)以(yi)(yi)臨時通(tong)用一下。不過需要(yao)注(zhu)意的是(shi)，部分電(dian)(dian)(dian)源(yuan)適(shi)配(pei)器也(ye)是(shi)不可(ke)(ke)以(yi)(yi)通(tong)用的，通(tong)用可(ke)(ke)能(neng)會導(dao)致電(dian)(dian)(dian)器燒(shao)壞、無法使用等問題，因(yin)此如果原(yuan)來(lai)的電(dian)(dian)(dian)源(yuan)適(shi)配(pei)器損壞，建議還是(shi)聯(lian)系廠家購買一個原(yuan)裝電(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。