細心的朋友在充電的時候會注意到許多充電器的上面都會有標著DC和AC這樣的字樣許多朋友都不明白這代表什么意思，今天電源適配器生產廠家就來告訴大家這些字樣代表著什么意思，順便和給大家普及一下充電器的工作原理。

手機(ji)(ji)上的DC代(dai)(dai)表(biao)(biao)的是直(zhi)流電(dian)，又稱(cheng)(cheng)“恒流電(dian)”，恒定(ding)電(dian)流是直(zhi)流電(dian)的一種，是大小和方(fang)向都(dou)不變(bian)的直(zhi)流電(dian)。恒定(ding)電(dian)流是指大小（電(dian)壓(ya)高(gao)低）和方(fang)向（正負極）都(dou)不隨時(shi)間(jian)（相對(dui)范(fan)圍內）而變(bian)化。AC代(dai)(dai)表(biao)(biao)的是交(jiao)(jiao)流電(dian)。強(qiang)度與(yu)方(fang)向都(dou)隨時(shi)間(jian)做周期(qi)性(xing)變(bian)化的電(dian)流叫做交(jiao)(jiao)變(bian)電(dian)流，簡稱(cheng)(cheng)交(jiao)(jiao)流電(dian)我們常(chang)見的電(dian)燈、電(dian)動(dong)機(ji)(ji)等用的電(dian)都(dou)是交(jiao)(jiao)流電(dian)。

目前(qian)我國統一的(de)(de)額定電(dian)(dian)(dian)(dian)壓(ya)為(wei)(wei)(wei)220V，手(shou)機充(chong)(chong)電(dian)(dian)(dian)(dian)器就(jiu)相當于是(shi)一個小型的(de)(de)變(bian)(bian)壓(ya)器，通過(guo)手(shou)機充(chong)(chong)電(dian)(dian)(dian)(dian)器把(ba)220V的(de)(de)高壓(ya)脈(mo)沖轉換為(wei)(wei)(wei)5V低壓(ya)脈(mo)沖，再(zai)通過(guo)充(chong)(chong)電(dian)(dian)(dian)(dian)器的(de)(de)轉換穩壓(ya)等(deng)，直接變(bian)(bian)為(wei)(wei)(wei)5V的(de)(de)直流(liu)電(dian)(dian)(dian)(dian)，也(ye)就(jiu)是(shi)“恒壓(ya)”作(zuo)用。手(shou)機充(chong)(chong)電(dian)(dian)(dian)(dian)器上面的(de)(de)變(bian)(bian)壓(ya)器變(bian)(bian)出來(lai)的(de)(de)是(shi)交流(liu)電(dian)(dian)(dian)(dian)，通過(guo)整流(liu)電(dian)(dian)(dian)(dian)路再(zai)變(bian)(bian)換出直流(liu)電(dian)(dian)(dian)(dian)后給手(shou)機充(chong)(chong)電(dian)(dian)(dian)(dian)，就(jiu)是(shi)直流(liu)電(dian)(dian)(dian)(dian)。這就(jiu)是(shi)手(shou)機充(chong)(chong)電(dian)(dian)(dian)(dian)器的(de)(de)工作(zuo)原理。

另外電(dian)源(yuan)適(shi)配器廠(chang)家也在這里(li)建議(yi)您(nin)為了充電(dian)安全，在選擇(ze)手機充電(dian)器的一定要選擇(ze)正規(gui)廠(chang)家生(sheng)產的充電(dian)器