電源模塊、電源適配器和充(chong)電(dian)(dian)器三者全是(shi)電(dian)(dian)源(yuan)(yuan)，只不過在主要(yao)用(yong)途上(shang)大(da)不一樣，他們(men)全是(shi)采(cai)用(yong)開關電(dian)(dian)源(yuan)(yuan)方式的(de)。可是(shi)小量充(chong)電(dian)(dian)器并不是(shi)采(cai)用(yong)開關電(dian)(dian)源(yuan)(yuan)方法做(zuo)的(de)，電(dian)(dian)源(yuan)(yuan)適配器也(ye)是(shi)采(cai)用(yong)變電(dian)(dian)器輸出和線形(xing)整流器穩(wen)壓(ya)管輸出的(de)。

　　開(kai)(kai)關電(dian)(dian)(dian)源是一(yi)(yi)(yi)種將電(dian)(dian)(dian)壓(ya)(ya)220V交流(liu)電(dian)(dian)(dian)流(liu)變(bian)為(wei)底(di)壓(ya)(ya)交流(liu)電(dian)(dian)(dian)的(de)一(yi)(yi)(yi)種方(fang)法(fa)，差別于(yu)傳統(tong)式工頻變(bian)壓(ya)(ya)器(qi)，一(yi)(yi)(yi)般采用這類電(dian)(dian)(dian)源開(kai)(kai)關轉換(huan)工作電(dian)(dian)(dian)壓(ya)(ya)技術性的(de)電(dian)(dian)(dian)源稱之為(wei)開(kai)(kai)關電(dian)(dian)(dian)源。電(dian)(dian)(dian)源模塊(kuai)就(jiu)是說一(yi)(yi)(yi)種中小型(xing)的(de)開(kai)(kai)關電(dian)(dian)(dian)源，關鍵分(fen)成AC-DC電(dian)(dian)(dian)源模塊(kuai)和DC-DC電(dian)(dian)(dian)源模塊(kuai)。由于(yu)重量輕，一(yi)(yi)(yi)般得(de)加外(wai)場元器(qi)件應(ying)用，關鍵做為(wei)工作電(dian)(dian)(dian)壓(ya)(ya)變(bian)換(huan)功(gong)效，為(wei)系統(tong)軟(ruan)件供電(dian)(dian)(dian)系統(tong)，不具備(bei)電(dian)(dian)(dian)池充電(dian)(dian)(dian)作用。

　　電(dian)(dian)(dian)(dian)(dian)(dian)(dian)源適配(pei)(pei)器(qi)(qi)就是(shi)指給機(ji)器(qi)(qi)設備出(chu)示電(dian)(dian)(dian)(dian)(dian)(dian)(dian)磁能的電(dian)(dian)(dian)(dian)(dian)(dian)(dian)源，如臺式電(dian)(dian)(dian)(dian)(dian)(dian)(dian)腦主機(ji)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)源、復(fu)印(yin)機(ji)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)源、顯示屏(ping)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)源，這(zhe)種不(bu)叫充(chong)(chong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)器(qi)(qi)。電(dian)(dian)(dian)(dian)(dian)(dian)(dian)源適配(pei)(pei)器(qi)(qi)具(ju)備容積較小、綠色環保、多種安全性維護、使(shi)用(yong)期長、運用(yong)覆(fu)蓋面廣等特性，大概可分(fen)成桌(zhuo)面型(xing)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)源適配(pei)(pei)器(qi)(qi)、直(zhi)插式電(dian)(dian)(dian)(dian)(dian)(dian)(dian)源適配(pei)(pei)器(qi)(qi)、多通道電(dian)(dian)(dian)(dian)(dian)(dian)(dian)源適配(pei)(pei)器(qi)(qi)、USB電(dian)(dian)(dian)(dian)(dian)(dian)(dian)源適配(pei)(pei)器(qi)(qi)這(zhe)些。電(dian)(dian)(dian)(dian)(dian)(dian)(dian)源適配(pei)(pei)器(qi)(qi)包含(han)充(chong)(chong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)器(qi)(qi)，可是(shi)充(chong)(chong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)器(qi)(qi)不(bu)包含(han)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)源適配(pei)(pei)器(qi)(qi)。

　　充(chong)(chong)(chong)(chong)電(dian)(dian)(dian)器就是(shi)指只給電(dian)(dian)(dian)池(chi)充(chong)(chong)(chong)(chong)電(dian)(dian)(dian)的(de)(de)電(dian)(dian)(dian)源(yuan)(yuan)，是(shi)在(zai)開關電(dian)(dian)(dian)源(yuan)(yuan)的(de)(de)基本上再加一(yi)個(ge)電(dian)(dian)(dian)池(chi)充(chong)(chong)(chong)(chong)電(dian)(dian)(dian)檢驗和控制電(dian)(dian)(dian)路，如恒(heng)流、反接、浮充(chong)(chong)(chong)(chong)、均充(chong)(chong)(chong)(chong)工作電(dian)(dian)(dian)壓的(de)(de)全(quan)自動調節這些。普遍的(de)(de)是(shi)USB充(chong)(chong)(chong)(chong)電(dian)(dian)(dian)器，也有手(shou)機(ji)上充(chong)(chong)(chong)(chong)電(dian)(dian)(dian)器、筆記(ji)本電(dian)(dian)(dian)腦電(dian)(dian)(dian)源(yuan)(yuan)、電(dian)(dian)(dian)動車充(chong)(chong)(chong)(chong)電(dian)(dian)(dian)器這些，充(chong)(chong)(chong)(chong)電(dian)(dian)(dian)器一(yi)般是(shi)將220V轉換為(wei)適(shi)合的(de)(de)交流電(dian)(dian)(dian)壓，依(yi)據(ju)電(dian)(dian)(dian)池(chi)的(de)(de)種類，會(hui)提升一(yi)個(ge)電(dian)(dian)(dian)池(chi)充(chong)(chong)(chong)(chong)電(dian)(dian)(dian)管理方(fang)法(fa)電(dian)(dian)(dian)源(yuan)(yuan)電(dian)(dian)(dian)路，具備對電(dian)(dian)(dian)池(chi)開展電(dian)(dian)(dian)池(chi)充(chong)(chong)(chong)(chong)電(dian)(dian)(dian)的(de)(de)作用。

　　一直(zhi)供(gong)電(dian)(dian)(dian)系(xi)(xi)統給機(ji)器(qi)設(she)(she)備的(de)供(gong)電(dian)(dian)(dian)系(xi)(xi)統電(dian)(dian)(dian)源(yuan)一般(ban)都叫電(dian)(dian)(dian)源(yuan)適配器(qi)，像給沈陽監控(kong)攝像頭或電(dian)(dian)(dian)子產品，與usb充電(dian)(dian)(dian)器(qi)在設(she)(she)計方案(an)規(gui)定中大不(bu)一樣(yang)(yang)。usb充電(dian)(dian)(dian)器(qi)規(gui)定考慮不(bu)一樣(yang)(yang)頻率段不(bu)一樣(yang)(yang)電(dian)(dian)(dian)流(liu)量的(de)必須(xu)，而監控(kong)器(qi)、監控(kong)攝像頭等機(ji)器(qi)設(she)(she)備供(gong)電(dian)(dian)(dian)系(xi)(xi)統的(de)電(dian)(dian)(dian)源(yuan)適配器(qi)則偏(pian)重(zhong)電(dian)(dian)(dian)流(liu)量平穩。

　　電(dian)源(yuan)適配(pei)器(qi)(qi)(qi)關(guan)鍵適用中小型家用電(dian)器(qi)(qi)(qi)、電(dian)子器(qi)(qi)(qi)件(jian)產(chan)品，大部(bu)分是恒壓源(yuan)，維持(chi)輸出工作(zuo)電(dian)壓穩定，隨機(ji)器(qi)(qi)(qi)設備(bei)負荷功率(lv)而(er)全自動調節(jie)輸出電(dian)流量(liang)。而(er)開關(guan)電(dian)源(yuan)是操縱全部(bu)電(dian)源(yuan)開關(guan)的變(bian)換電(dian)流量(liang)機(ji)器(qi)(qi)(qi)設備(bei)，適用全部(bu)的電(dian)子產(chan)品。