一、電源適配器是什么

電(dian)(dian)(dian)(dian)源適配器(qi)(qi)(qi)(qi)(qi)又(you)稱外置電(dian)(dian)(dian)(dian)源，是一(yi)種小型便(bian)攜(xie)式電(dian)(dian)(dian)(dian)子(zi)設備(bei)及(ji)電(dian)(dian)(dian)(dian)子(zi)電(dian)(dian)(dian)(dian)器(qi)(qi)(qi)(qi)(qi)的供電(dian)(dian)(dian)(dian)電(dian)(dian)(dian)(dian)壓變(bian)換設備(bei)，由外殼、變(bian)壓器(qi)(qi)(qi)(qi)(qi)、電(dian)(dian)(dian)(dian)感、電(dian)(dian)(dian)(dian)容(rong)、控(kong)制IC、PCB板等元器(qi)(qi)(qi)(qi)(qi)件(jian)組成，它的作用主要(yao)(yao)是：將電(dian)(dian)(dian)(dian)流(liu)由交流(liu)輸入轉(zhuan)換為直(zhi)流(liu)輸出，把不穩定(ding)的電(dian)(dian)(dian)(dian)源通過轉(zhuan)化電(dian)(dian)(dian)(dian)路變(bian)成電(dian)(dian)(dian)(dian)子(zi)產品需要(yao)(yao)的恒(heng)壓直(zhi)流(liu)電(dian)(dian)(dian)(dian)，從而給物(wu)體供電(dian)(dian)(dian)(dian)和(he)充(chong)電(dian)(dian)(dian)(dian)。電(dian)(dian)(dian)(dian)源適配器(qi)(qi)(qi)(qi)(qi)可以看(kan)作是變(bian)壓器(qi)(qi)(qi)(qi)(qi)和(he)整流(liu)器(qi)(qi)(qi)(qi)(qi)，可以起(qi)到保護電(dian)(dian)(dian)(dian)器(qi)(qi)(qi)(qi)(qi)和(he)人(ren)身(shen)安全的作用。

二、電源適配器是充電器嗎

電(dian)(dian)(dian)(dian)源(yuan)(yuan)適(shi)配(pei)(pei)器(qi)并(bing)不是(shi)充(chong)(chong)(chong)(chong)(chong)電(dian)(dian)(dian)(dian)器(qi)，電(dian)(dian)(dian)(dian)源(yuan)(yuan)適(shi)配(pei)(pei)器(qi)是(shi)電(dian)(dian)(dian)(dian)源(yuan)(yuan)開關，用(yong)(yong)于(yu)提供(gong)電(dian)(dian)(dian)(dian)力能源(yuan)(yuan)，可以給(gei)投影(ying)儀、筆記本電(dian)(dian)(dian)(dian)腦、音響、凈(jing)水器(qi)等家用(yong)(yong)電(dian)(dian)(dian)(dian)器(qi)或電(dian)(dian)(dian)(dian)子產品提供(gong)電(dian)(dian)(dian)(dian)力；而充(chong)(chong)(chong)(chong)(chong)電(dian)(dian)(dian)(dian)器(qi)是(shi)用(yong)(yong)來給(gei)電(dian)(dian)(dian)(dian)池充(chong)(chong)(chong)(chong)(chong)電(dian)(dian)(dian)(dian)的(de)，一般會根據電(dian)(dian)(dian)(dian)池容(rong)量和(he)充(chong)(chong)(chong)(chong)(chong)電(dian)(dian)(dian)(dian)特性進行分階段(duan)充(chong)(chong)(chong)(chong)(chong)電(dian)(dian)(dian)(dian)，二(er)者(zhe)是(shi)不同的(de)。電(dian)(dian)(dian)(dian)源(yuan)(yuan)適(shi)配(pei)(pei)器(qi)和(he)電(dian)(dian)(dian)(dian)源(yuan)(yuan)充(chong)(chong)(chong)(chong)(chong)電(dian)(dian)(dian)(dian)器(qi)的(de)區別(bie)還體現在定義、結(jie)構、電(dian)(dian)(dian)(dian)流模(mo)式、用(yong)(yong)途等方面，最大的(de)區別(bie)就(jiu)是(shi)充(chong)(chong)(chong)(chong)(chong)電(dian)(dian)(dian)(dian)器(qi)只是(shi)給(gei)電(dian)(dian)(dian)(dian)池充(chong)(chong)(chong)(chong)(chong)電(dian)(dian)(dian)(dian)，而電(dian)(dian)(dian)(dian)源(yuan)(yuan)適(shi)配(pei)(pei)器(qi)不僅能給(gei)電(dian)(dian)(dian)(dian)池充(chong)(chong)(chong)(chong)(chong)電(dian)(dian)(dian)(dian)，還能給(gei)主機供(gong)電(dian)(dian)(dian)(dian)。

三、電源適配器可以通用嗎

一(yi)(yi)般情況(kuang)下，電(dian)源(yuan)適(shi)配(pei)器(qi)(qi)能(neng)否通用(yong)(yong)(yong)要(yao)(yao)(yao)滿足三個條件：輸(shu)出電(dian)壓必(bi)須相(xiang)同、輸(shu)出的額定電(dian)流比(bi)原電(dian)器(qi)(qi)要(yao)(yao)(yao)求的要(yao)(yao)(yao)大、接口相(xiang)同，如果這三個方面都滿足的話(hua)，可(ke)(ke)以(yi)臨(lin)時通用(yong)(yong)(yong)一(yi)(yi)下。不過需要(yao)(yao)(yao)注意的是(shi)，部分電(dian)源(yuan)適(shi)配(pei)器(qi)(qi)也是(shi)不可(ke)(ke)以(yi)通用(yong)(yong)(yong)的，通用(yong)(yong)(yong)可(ke)(ke)能(neng)會導致電(dian)器(qi)(qi)燒壞(huai)、無法使(shi)用(yong)(yong)(yong)等問題(ti)，因此如果原來的電(dian)源(yuan)適(shi)配(pei)器(qi)(qi)損(sun)壞(huai)，建議還是(shi)聯(lian)系廠家購買一(yi)(yi)個原裝電(dian)源(yuan)適(shi)配(pei)器(qi)(qi)比(bi)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>>