電源模塊、電源適配器和充電(dian)(dian)(dian)器(qi)三者全(quan)是(shi)(shi)電(dian)(dian)(dian)源，只不過在主要用(yong)途上大不一樣，他(ta)們全(quan)是(shi)(shi)采(cai)用(yong)開關(guan)電(dian)(dian)(dian)源方式的(de)。可是(shi)(shi)小量充電(dian)(dian)(dian)器(qi)并不是(shi)(shi)采(cai)用(yong)開關(guan)電(dian)(dian)(dian)源方法做的(de)，電(dian)(dian)(dian)源適配器(qi)也(ye)是(shi)(shi)采(cai)用(yong)變電(dian)(dian)(dian)器(qi)輸出和線形整流器(qi)穩(wen)壓管輸出的(de)。

　　開(kai)關(guan)(guan)(guan)(guan)電(dian)(dian)(dian)源(yuan)是一(yi)種(zhong)將電(dian)(dian)(dian)壓220V交流電(dian)(dian)(dian)流變(bian)為(wei)底壓交流電(dian)(dian)(dian)的(de)一(yi)種(zhong)方法，差別于傳統式工頻變(bian)壓器，一(yi)般采用(yong)(yong)這類電(dian)(dian)(dian)源(yuan)開(kai)關(guan)(guan)(guan)(guan)轉換工作(zuo)電(dian)(dian)(dian)壓技術性的(de)電(dian)(dian)(dian)源(yuan)稱之(zhi)為(wei)開(kai)關(guan)(guan)(guan)(guan)電(dian)(dian)(dian)源(yuan)。電(dian)(dian)(dian)源(yuan)模(mo)塊就是說一(yi)種(zhong)中小型的(de)開(kai)關(guan)(guan)(guan)(guan)電(dian)(dian)(dian)源(yuan)，關(guan)(guan)(guan)(guan)鍵分成AC-DC電(dian)(dian)(dian)源(yuan)模(mo)塊和DC-DC電(dian)(dian)(dian)源(yuan)模(mo)塊。由于重(zhong)量輕，一(yi)般得加外場元器件應用(yong)(yong)，關(guan)(guan)(guan)(guan)鍵做(zuo)為(wei)工作(zuo)電(dian)(dian)(dian)壓變(bian)換功效，為(wei)系(xi)統軟件供電(dian)(dian)(dian)系(xi)統，不具備電(dian)(dian)(dian)池充(chong)電(dian)(dian)(dian)作(zuo)用(yong)(yong)。

　　電(dian)(dian)源(yuan)(yuan)(yuan)(yuan)適(shi)配(pei)(pei)(pei)器就是指給機器設(she)備出(chu)示(shi)電(dian)(dian)磁(ci)能的電(dian)(dian)源(yuan)(yuan)(yuan)(yuan)，如(ru)臺式電(dian)(dian)腦主機電(dian)(dian)源(yuan)(yuan)(yuan)(yuan)、復印機電(dian)(dian)源(yuan)(yuan)(yuan)(yuan)、顯示(shi)屏電(dian)(dian)源(yuan)(yuan)(yuan)(yuan)，這(zhe)種(zhong)不(bu)叫充電(dian)(dian)器。電(dian)(dian)源(yuan)(yuan)(yuan)(yuan)適(shi)配(pei)(pei)(pei)器具備容(rong)積(ji)較小(xiao)、綠(lv)色(se)環保、多種(zhong)安全性維(wei)護、使用(yong)期長、運用(yong)覆蓋(gai)面(mian)廣等特性，大概可分成(cheng)桌面(mian)型電(dian)(dian)源(yuan)(yuan)(yuan)(yuan)適(shi)配(pei)(pei)(pei)器、直插式電(dian)(dian)源(yuan)(yuan)(yuan)(yuan)適(shi)配(pei)(pei)(pei)器、多通道電(dian)(dian)源(yuan)(yuan)(yuan)(yuan)適(shi)配(pei)(pei)(pei)器、USB電(dian)(dian)源(yuan)(yuan)(yuan)(yuan)適(shi)配(pei)(pei)(pei)器這(zhe)些。電(dian)(dian)源(yuan)(yuan)(yuan)(yuan)適(shi)配(pei)(pei)(pei)器包(bao)含充電(dian)(dian)器，可是充電(dian)(dian)器不(bu)包(bao)含電(dian)(dian)源(yuan)(yuan)(yuan)(yuan)適(shi)配(pei)(pei)(pei)器。

　　充(chong)(chong)(chong)電(dian)(dian)器(qi)(qi)就(jiu)是(shi)(shi)指只給電(dian)(dian)池(chi)充(chong)(chong)(chong)電(dian)(dian)的(de)(de)(de)(de)電(dian)(dian)源，是(shi)(shi)在開關電(dian)(dian)源的(de)(de)(de)(de)基本(ben)上再加一(yi)個電(dian)(dian)池(chi)充(chong)(chong)(chong)電(dian)(dian)檢驗和控制電(dian)(dian)路，如恒(heng)流(liu)、反接(jie)、浮(fu)充(chong)(chong)(chong)、均充(chong)(chong)(chong)工作(zuo)(zuo)電(dian)(dian)壓的(de)(de)(de)(de)全自動調節這(zhe)些(xie)。普遍的(de)(de)(de)(de)是(shi)(shi)USB充(chong)(chong)(chong)電(dian)(dian)器(qi)(qi)，也有手(shou)機(ji)上充(chong)(chong)(chong)電(dian)(dian)器(qi)(qi)、筆記本(ben)電(dian)(dian)腦(nao)電(dian)(dian)源、電(dian)(dian)動車充(chong)(chong)(chong)電(dian)(dian)器(qi)(qi)這(zhe)些(xie)，充(chong)(chong)(chong)電(dian)(dian)器(qi)(qi)一(yi)般是(shi)(shi)將220V轉換為適合的(de)(de)(de)(de)交(jiao)流(liu)電(dian)(dian)壓，依據電(dian)(dian)池(chi)的(de)(de)(de)(de)種類(lei)，會提升一(yi)個電(dian)(dian)池(chi)充(chong)(chong)(chong)電(dian)(dian)管理(li)方法電(dian)(dian)源電(dian)(dian)路，具備對電(dian)(dian)池(chi)開展電(dian)(dian)池(chi)充(chong)(chong)(chong)電(dian)(dian)的(de)(de)(de)(de)作(zuo)(zuo)用。

　　一(yi)(yi)直供(gong)電(dian)(dian)(dian)系(xi)統(tong)給機器(qi)(qi)設(she)備(bei)的供(gong)電(dian)(dian)(dian)系(xi)統(tong)電(dian)(dian)(dian)源一(yi)(yi)般都叫電(dian)(dian)(dian)源適配器(qi)(qi)，像(xiang)(xiang)給沈陽(yang)監(jian)控攝(she)像(xiang)(xiang)頭或電(dian)(dian)(dian)子產(chan)品，與usb充電(dian)(dian)(dian)器(qi)(qi)在設(she)計方(fang)案規(gui)(gui)定(ding)中(zhong)大不一(yi)(yi)樣(yang)。usb充電(dian)(dian)(dian)器(qi)(qi)規(gui)(gui)定(ding)考慮不一(yi)(yi)樣(yang)頻率段(duan)不一(yi)(yi)樣(yang)電(dian)(dian)(dian)流(liu)量的必須(xu)，而監(jian)控器(qi)(qi)、監(jian)控攝(she)像(xiang)(xiang)頭等機器(qi)(qi)設(she)備(bei)供(gong)電(dian)(dian)(dian)系(xi)統(tong)的電(dian)(dian)(dian)源適配器(qi)(qi)則偏重電(dian)(dian)(dian)流(liu)量平穩。

　　電(dian)(dian)源(yuan)適(shi)配器(qi)關鍵適(shi)用中小(xiao)型家(jia)用電(dian)(dian)器(qi)、電(dian)(dian)子(zi)器(qi)件產(chan)品(pin)，大部(bu)分是恒壓源(yuan)，維持(chi)輸(shu)出工(gong)作電(dian)(dian)壓穩(wen)定(ding)，隨機器(qi)設(she)(she)備負荷(he)功率(lv)而(er)全(quan)(quan)自動調節輸(shu)出電(dian)(dian)流量(liang)。而(er)開(kai)關電(dian)(dian)源(yuan)是操縱(zong)全(quan)(quan)部(bu)電(dian)(dian)源(yuan)開(kai)關的變換(huan)電(dian)(dian)流量(liang)機器(qi)設(she)(she)備，適(shi)用全(quan)(quan)部(bu)的電(dian)(dian)子(zi)產(chan)品(pin)。