電源模塊、電源適配器和充(chong)電(dian)器三者全是(shi)(shi)電(dian)源(yuan)(yuan)，只不(bu)過在主要用途上大不(bu)一樣，他們全是(shi)(shi)采用開關(guan)電(dian)源(yuan)(yuan)方式的(de)。可是(shi)(shi)小量充(chong)電(dian)器并不(bu)是(shi)(shi)采用開關(guan)電(dian)源(yuan)(yuan)方法做(zuo)的(de)，電(dian)源(yuan)(yuan)適(shi)配器也是(shi)(shi)采用變電(dian)器輸出(chu)和線形整流器穩壓管輸出(chu)的(de)。

　　開(kai)關電(dian)(dian)(dian)(dian)源是一種(zhong)將電(dian)(dian)(dian)(dian)壓(ya)(ya)220V交流(liu)電(dian)(dian)(dian)(dian)流(liu)變(bian)為(wei)底(di)壓(ya)(ya)交流(liu)電(dian)(dian)(dian)(dian)的(de)一種(zhong)方(fang)法(fa)，差別于傳統(tong)式工頻變(bian)壓(ya)(ya)器，一般采(cai)用這類電(dian)(dian)(dian)(dian)源開(kai)關轉換工作(zuo)電(dian)(dian)(dian)(dian)壓(ya)(ya)技(ji)術性的(de)電(dian)(dian)(dian)(dian)源稱之為(wei)開(kai)關電(dian)(dian)(dian)(dian)源。電(dian)(dian)(dian)(dian)源模(mo)塊就是說一種(zhong)中小(xiao)型的(de)開(kai)關電(dian)(dian)(dian)(dian)源，關鍵(jian)(jian)分成AC-DC電(dian)(dian)(dian)(dian)源模(mo)塊和DC-DC電(dian)(dian)(dian)(dian)源模(mo)塊。由于重(zhong)量輕，一般得加外(wai)場元器件應用，關鍵(jian)(jian)做(zuo)為(wei)工作(zuo)電(dian)(dian)(dian)(dian)壓(ya)(ya)變(bian)換功效，為(wei)系統(tong)軟(ruan)件供電(dian)(dian)(dian)(dian)系統(tong)，不具備電(dian)(dian)(dian)(dian)池充電(dian)(dian)(dian)(dian)作(zuo)用。

　　電(dian)源(yuan)(yuan)(yuan)(yuan)適(shi)(shi)配(pei)器就(jiu)是指給機器設(she)備出示電(dian)磁能的電(dian)源(yuan)(yuan)(yuan)(yuan)，如(ru)臺式(shi)電(dian)腦主機電(dian)源(yuan)(yuan)(yuan)(yuan)、復印機電(dian)源(yuan)(yuan)(yuan)(yuan)、顯示屏電(dian)源(yuan)(yuan)(yuan)(yuan)，這(zhe)種不叫(jiao)充(chong)(chong)電(dian)器。電(dian)源(yuan)(yuan)(yuan)(yuan)適(shi)(shi)配(pei)器具(ju)備容積較小、綠色環保、多種安全性(xing)維護、使(shi)用(yong)期長、運用(yong)覆蓋面(mian)廣等特性(xing)，大概可(ke)分成(cheng)桌面(mian)型電(dian)源(yuan)(yuan)(yuan)(yuan)適(shi)(shi)配(pei)器、直插式(shi)電(dian)源(yuan)(yuan)(yuan)(yuan)適(shi)(shi)配(pei)器、多通(tong)道電(dian)源(yuan)(yuan)(yuan)(yuan)適(shi)(shi)配(pei)器、USB電(dian)源(yuan)(yuan)(yuan)(yuan)適(shi)(shi)配(pei)器這(zhe)些。電(dian)源(yuan)(yuan)(yuan)(yuan)適(shi)(shi)配(pei)器包含充(chong)(chong)電(dian)器，可(ke)是充(chong)(chong)電(dian)器不包含電(dian)源(yuan)(yuan)(yuan)(yuan)適(shi)(shi)配(pei)器。

　　充(chong)(chong)電(dian)(dian)(dian)器(qi)(qi)(qi)就是指只給電(dian)(dian)(dian)池(chi)(chi)(chi)充(chong)(chong)電(dian)(dian)(dian)的(de)(de)(de)電(dian)(dian)(dian)源(yuan)，是在(zai)開關電(dian)(dian)(dian)源(yuan)的(de)(de)(de)基本(ben)上(shang)再加一(yi)(yi)個電(dian)(dian)(dian)池(chi)(chi)(chi)充(chong)(chong)電(dian)(dian)(dian)檢驗和(he)控制電(dian)(dian)(dian)路，如恒(heng)流、反接、浮(fu)充(chong)(chong)、均充(chong)(chong)工作電(dian)(dian)(dian)壓的(de)(de)(de)全自動調節這(zhe)些(xie)。普遍的(de)(de)(de)是USB充(chong)(chong)電(dian)(dian)(dian)器(qi)(qi)(qi)，也(ye)有手機上(shang)充(chong)(chong)電(dian)(dian)(dian)器(qi)(qi)(qi)、筆記本(ben)電(dian)(dian)(dian)腦電(dian)(dian)(dian)源(yuan)、電(dian)(dian)(dian)動車充(chong)(chong)電(dian)(dian)(dian)器(qi)(qi)(qi)這(zhe)些(xie)，充(chong)(chong)電(dian)(dian)(dian)器(qi)(qi)(qi)一(yi)(yi)般是將220V轉換為適合(he)的(de)(de)(de)交流電(dian)(dian)(dian)壓，依據電(dian)(dian)(dian)池(chi)(chi)(chi)的(de)(de)(de)種類，會提升一(yi)(yi)個電(dian)(dian)(dian)池(chi)(chi)(chi)充(chong)(chong)電(dian)(dian)(dian)管理方法電(dian)(dian)(dian)源(yuan)電(dian)(dian)(dian)路，具備對(dui)電(dian)(dian)(dian)池(chi)(chi)(chi)開展電(dian)(dian)(dian)池(chi)(chi)(chi)充(chong)(chong)電(dian)(dian)(dian)的(de)(de)(de)作用。

　　一(yi)(yi)(yi)直供(gong)電(dian)(dian)系統給(gei)機器(qi)設(she)備(bei)的供(gong)電(dian)(dian)系統電(dian)(dian)源(yuan)一(yi)(yi)(yi)般都叫電(dian)(dian)源(yuan)適配器(qi)，像(xiang)給(gei)沈陽(yang)監控攝(she)像(xiang)頭或電(dian)(dian)子產品，與usb充電(dian)(dian)器(qi)在(zai)設(she)計方(fang)案規定(ding)中大不一(yi)(yi)(yi)樣。usb充電(dian)(dian)器(qi)規定(ding)考慮(lv)不一(yi)(yi)(yi)樣頻(pin)率段不一(yi)(yi)(yi)樣電(dian)(dian)流(liu)量的必須，而監控器(qi)、監控攝(she)像(xiang)頭等機器(qi)設(she)備(bei)供(gong)電(dian)(dian)系統的電(dian)(dian)源(yuan)適配器(qi)則偏重電(dian)(dian)流(liu)量平(ping)穩。

　　電(dian)源適(shi)配器(qi)(qi)關(guan)鍵適(shi)用中小型家(jia)用電(dian)器(qi)(qi)、電(dian)子(zi)器(qi)(qi)件產品，大部(bu)分是恒壓源，維持輸(shu)出工作(zuo)電(dian)壓穩定，隨機器(qi)(qi)設備(bei)負荷功率而(er)全自動調節(jie)輸(shu)出電(dian)流(liu)量。而(er)開關(guan)電(dian)源是操縱全部(bu)電(dian)源開關(guan)的變換電(dian)流(liu)量機器(qi)(qi)設備(bei)，適(shi)用全部(bu)的電(dian)子(zi)產品。