一、電源適配器是什么

電(dian)(dian)(dian)(dian)源適配器(qi)(qi)(qi)又稱外(wai)置電(dian)(dian)(dian)(dian)源，是(shi)一種小型便(bian)攜式電(dian)(dian)(dian)(dian)子(zi)(zi)設備(bei)及電(dian)(dian)(dian)(dian)子(zi)(zi)電(dian)(dian)(dian)(dian)器(qi)(qi)(qi)的(de)(de)供電(dian)(dian)(dian)(dian)電(dian)(dian)(dian)(dian)壓變(bian)換(huan)(huan)設備(bei)，由外(wai)殼、變(bian)壓器(qi)(qi)(qi)、電(dian)(dian)(dian)(dian)感、電(dian)(dian)(dian)(dian)容、控(kong)制IC、PCB板等元(yuan)器(qi)(qi)(qi)件組(zu)成，它的(de)(de)作用主要(yao)是(shi)：將電(dian)(dian)(dian)(dian)流(liu)(liu)由交(jiao)流(liu)(liu)輸(shu)入轉換(huan)(huan)為直流(liu)(liu)輸(shu)出，把不穩定(ding)的(de)(de)電(dian)(dian)(dian)(dian)源通過轉化電(dian)(dian)(dian)(dian)路變(bian)成電(dian)(dian)(dian)(dian)子(zi)(zi)產品需要(yao)的(de)(de)恒壓直流(liu)(liu)電(dian)(dian)(dian)(dian)，從而(er)給物體供電(dian)(dian)(dian)(dian)和(he)充電(dian)(dian)(dian)(dian)。電(dian)(dian)(dian)(dian)源適配器(qi)(qi)(qi)可以看作是(shi)變(bian)壓器(qi)(qi)(qi)和(he)整流(liu)(liu)器(qi)(qi)(qi)，可以起到(dao)保護(hu)電(dian)(dian)(dian)(dian)器(qi)(qi)(qi)和(he)人身安(an)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)源(yuan)(yuan)(yuan)(yuan)適(shi)配器(qi)并不(bu)(bu)是(shi)充(chong)(chong)電(dian)(dian)(dian)(dian)(dian)(dian)器(qi)，電(dian)(dian)(dian)(dian)(dian)(dian)源(yuan)(yuan)(yuan)(yuan)適(shi)配器(qi)是(shi)電(dian)(dian)(dian)(dian)(dian)(dian)源(yuan)(yuan)(yuan)(yuan)開(kai)關，用(yong)于提供(gong)電(dian)(dian)(dian)(dian)(dian)(dian)力能(neng)源(yuan)(yuan)(yuan)(yuan)，可以(yi)給(gei)投影儀、筆記(ji)本電(dian)(dian)(dian)(dian)(dian)(dian)腦、音響、凈水器(qi)等家用(yong)電(dian)(dian)(dian)(dian)(dian)(dian)器(qi)或電(dian)(dian)(dian)(dian)(dian)(dian)子產品提供(gong)電(dian)(dian)(dian)(dian)(dian)(dian)力；而(er)充(chong)(chong)電(dian)(dian)(dian)(dian)(dian)(dian)器(qi)是(shi)用(yong)來給(gei)電(dian)(dian)(dian)(dian)(dian)(dian)池(chi)充(chong)(chong)電(dian)(dian)(dian)(dian)(dian)(dian)的，一般會根據電(dian)(dian)(dian)(dian)(dian)(dian)池(chi)容量(liang)和充(chong)(chong)電(dian)(dian)(dian)(dian)(dian)(dian)特性進行分階段充(chong)(chong)電(dian)(dian)(dian)(dian)(dian)(dian)，二者是(shi)不(bu)(bu)同的。電(dian)(dian)(dian)(dian)(dian)(dian)源(yuan)(yuan)(yuan)(yuan)適(shi)配器(qi)和電(dian)(dian)(dian)(dian)(dian)(dian)源(yuan)(yuan)(yuan)(yuan)充(chong)(chong)電(dian)(dian)(dian)(dian)(dian)(dian)器(qi)的區(qu)別(bie)還(huan)體(ti)現(xian)在定義、結構、電(dian)(dian)(dian)(dian)(dian)(dian)流模(mo)式(shi)、用(yong)途等方(fang)面，最大(da)的區(qu)別(bie)就是(shi)充(chong)(chong)電(dian)(dian)(dian)(dian)(dian)(dian)器(qi)只是(shi)給(gei)電(dian)(dian)(dian)(dian)(dian)(dian)池(chi)充(chong)(chong)電(dian)(dian)(dian)(dian)(dian)(dian)，而(er)電(dian)(dian)(dian)(dian)(dian)(dian)源(yuan)(yuan)(yuan)(yuan)適(shi)配器(qi)不(bu)(bu)僅(jin)能(neng)給(gei)電(dian)(dian)(dian)(dian)(dian)(dian)池(chi)充(chong)(chong)電(dian)(dian)(dian)(dian)(dian)(dian)，還(huan)能(neng)給(gei)主機供(gong)電(dian)(dian)(dian)(dian)(dian)(dian)。

三、電源適配器可以通用嗎

一(yi)(yi)般情況下(xia)，電(dian)(dian)源(yuan)適配器(qi)能(neng)否通用要(yao)滿足(zu)三個(ge)條件：輸出電(dian)(dian)壓(ya)必須(xu)相同、輸出的(de)額定電(dian)(dian)流比原電(dian)(dian)器(qi)要(yao)求的(de)要(yao)大、接(jie)口相同，如果這三個(ge)方面都(dou)滿足(zu)的(de)話，可以(yi)臨時通用一(yi)(yi)下(xia)。不過需(xu)要(yao)注意(yi)的(de)是，部(bu)分電(dian)(dian)源(yuan)適配器(qi)也是不可以(yi)通用的(de)，通用可能(neng)會導致電(dian)(dian)器(qi)燒壞(huai)、無法使用等問(wen)題，因此如果原來(lai)的(de)電(dian)(dian)源(yuan)適配器(qi)損壞(huai)，建議還是聯系廠家購買一(yi)(yi)個(ge)原裝電(dian)(dian)源(yuan)適配器(qi)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>>