一、電源適配器是什么

電(dian)(dian)(dian)源(yuan)適配(pei)(pei)器(qi)(qi)(qi)又稱外置(zhi)電(dian)(dian)(dian)源(yuan)，是(shi)一(yi)種小型便攜(xie)式電(dian)(dian)(dian)子(zi)設(she)(she)備(bei)及電(dian)(dian)(dian)子(zi)電(dian)(dian)(dian)器(qi)(qi)(qi)的(de)供電(dian)(dian)(dian)電(dian)(dian)(dian)壓變換(huan)設(she)(she)備(bei)，由外殼、變壓器(qi)(qi)(qi)、電(dian)(dian)(dian)感、電(dian)(dian)(dian)容(rong)、控制(zhi)IC、PCB板等元(yuan)器(qi)(qi)(qi)件組成，它的(de)作用(yong)主要(yao)是(shi)：將電(dian)(dian)(dian)流(liu)由交流(liu)輸(shu)入轉(zhuan)換(huan)為直(zhi)流(liu)輸(shu)出，把不穩定(ding)的(de)電(dian)(dian)(dian)源(yuan)通過轉(zhuan)化電(dian)(dian)(dian)路變成電(dian)(dian)(dian)子(zi)產品需(xu)要(yao)的(de)恒壓直(zhi)流(liu)電(dian)(dian)(dian)，從(cong)而(er)給(gei)物體供電(dian)(dian)(dian)和(he)充(chong)電(dian)(dian)(dian)。電(dian)(dian)(dian)源(yuan)適配(pei)(pei)器(qi)(qi)(qi)可以看(kan)作是(shi)變壓器(qi)(qi)(qi)和(he)整流(liu)器(qi)(qi)(qi)，可以起到保護電(dian)(dian)(dian)器(qi)(qi)(qi)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)(dian)(dian)源(yuan)(yuan)(yuan)適(shi)配(pei)器(qi)(qi)(qi)(qi)并不(bu)是(shi)(shi)充(chong)(chong)電(dian)(dian)(dian)(dian)器(qi)(qi)(qi)(qi)，電(dian)(dian)(dian)(dian)源(yuan)(yuan)(yuan)適(shi)配(pei)器(qi)(qi)(qi)(qi)是(shi)(shi)電(dian)(dian)(dian)(dian)源(yuan)(yuan)(yuan)開關，用于提(ti)供電(dian)(dian)(dian)(dian)力(li)(li)能(neng)源(yuan)(yuan)(yuan)，可以給(gei)(gei)投影儀、筆(bi)記本電(dian)(dian)(dian)(dian)腦、音響、凈水(shui)器(qi)(qi)(qi)(qi)等(deng)家用電(dian)(dian)(dian)(dian)器(qi)(qi)(qi)(qi)或電(dian)(dian)(dian)(dian)子(zi)產品提(ti)供電(dian)(dian)(dian)(dian)力(li)(li)；而(er)(er)充(chong)(chong)電(dian)(dian)(dian)(dian)器(qi)(qi)(qi)(qi)是(shi)(shi)用來給(gei)(gei)電(dian)(dian)(dian)(dian)池(chi)充(chong)(chong)電(dian)(dian)(dian)(dian)的，一般(ban)會根據(ju)電(dian)(dian)(dian)(dian)池(chi)容量和充(chong)(chong)電(dian)(dian)(dian)(dian)特性進行分階段充(chong)(chong)電(dian)(dian)(dian)(dian)，二者是(shi)(shi)不(bu)同的。電(dian)(dian)(dian)(dian)源(yuan)(yuan)(yuan)適(shi)配(pei)器(qi)(qi)(qi)(qi)和電(dian)(dian)(dian)(dian)源(yuan)(yuan)(yuan)充(chong)(chong)電(dian)(dian)(dian)(dian)器(qi)(qi)(qi)(qi)的區別還體(ti)現(xian)在定義、結構、電(dian)(dian)(dian)(dian)流模式(shi)、用途(tu)等(deng)方面，最大的區別就(jiu)是(shi)(shi)充(chong)(chong)電(dian)(dian)(dian)(dian)器(qi)(qi)(qi)(qi)只(zhi)是(shi)(shi)給(gei)(gei)電(dian)(dian)(dian)(dian)池(chi)充(chong)(chong)電(dian)(dian)(dian)(dian)，而(er)(er)電(dian)(dian)(dian)(dian)源(yuan)(yuan)(yuan)適(shi)配(pei)器(qi)(qi)(qi)(qi)不(bu)僅(jin)能(neng)給(gei)(gei)電(dian)(dian)(dian)(dian)池(chi)充(chong)(chong)電(dian)(dian)(dian)(dian)，還能(neng)給(gei)(gei)主機供電(dian)(dian)(dian)(dian)。

三、電源適配器可以通用嗎

一(yi)般(ban)情況下，電源(yuan)適配器能否通(tong)(tong)用(yong)要(yao)(yao)滿足三個條件(jian)：輸(shu)出電壓必須相同、輸(shu)出的(de)(de)(de)額(e)定電流(liu)比原電器要(yao)(yao)求(qiu)的(de)(de)(de)要(yao)(yao)大、接(jie)口(kou)相同，如果這三個方(fang)面都滿足的(de)(de)(de)話，可以臨時通(tong)(tong)用(yong)一(yi)下。不過需要(yao)(yao)注意的(de)(de)(de)是，部分電源(yuan)適配器也是不可以通(tong)(tong)用(yong)的(de)(de)(de)，通(tong)(tong)用(yong)可能會導致電器燒壞、無法使用(yong)等問題(ti)，因此如果原來的(de)(de)(de)電源(yuan)適配器損壞，建議還是聯系(xi)廠家(jia)購買一(yi)個原裝電源(yuan)適配器比較好。

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>>