電源模塊、電源適配器和充電(dian)器三者全(quan)是(shi)電(dian)源(yuan)(yuan)，只不過在主(zhu)要(yao)用途上大不一(yi)樣，他們全(quan)是(shi)采(cai)用開關(guan)電(dian)源(yuan)(yuan)方(fang)式的。可是(shi)小(xiao)量充電(dian)器并不是(shi)采(cai)用開關(guan)電(dian)源(yuan)(yuan)方(fang)法做(zuo)的，電(dian)源(yuan)(yuan)適(shi)配器也是(shi)采(cai)用變(bian)電(dian)器輸(shu)出和線形整流器穩壓(ya)管輸(shu)出的。

　　開關(guan)(guan)電(dian)(dian)(dian)(dian)源(yuan)是(shi)一種將電(dian)(dian)(dian)(dian)壓220V交流(liu)電(dian)(dian)(dian)(dian)流(liu)變為底壓交流(liu)電(dian)(dian)(dian)(dian)的一種方法，差別于(yu)傳統式工(gong)(gong)頻變壓器，一般(ban)采用這類電(dian)(dian)(dian)(dian)源(yuan)開關(guan)(guan)轉換工(gong)(gong)作電(dian)(dian)(dian)(dian)壓技術性的電(dian)(dian)(dian)(dian)源(yuan)稱之為開關(guan)(guan)電(dian)(dian)(dian)(dian)源(yuan)。電(dian)(dian)(dian)(dian)源(yuan)模塊就(jiu)是(shi)說(shuo)一種中小(xiao)型(xing)的開關(guan)(guan)電(dian)(dian)(dian)(dian)源(yuan)，關(guan)(guan)鍵分成AC-DC電(dian)(dian)(dian)(dian)源(yuan)模塊和(he)DC-DC電(dian)(dian)(dian)(dian)源(yuan)模塊。由于(yu)重量輕，一般(ban)得加(jia)外場(chang)元器件應用，關(guan)(guan)鍵做為工(gong)(gong)作電(dian)(dian)(dian)(dian)壓變換功效，為系統軟件供(gong)電(dian)(dian)(dian)(dian)系統，不具備電(dian)(dian)(dian)(dian)池充電(dian)(dian)(dian)(dian)作用。

　　電(dian)(dian)(dian)(dian)源(yuan)(yuan)(yuan)適(shi)(shi)配器(qi)(qi)(qi)就是指給機器(qi)(qi)(qi)設備(bei)(bei)出示(shi)電(dian)(dian)(dian)(dian)磁能(neng)的電(dian)(dian)(dian)(dian)源(yuan)(yuan)(yuan)，如臺式電(dian)(dian)(dian)(dian)腦主機電(dian)(dian)(dian)(dian)源(yuan)(yuan)(yuan)、復印機電(dian)(dian)(dian)(dian)源(yuan)(yuan)(yuan)、顯示(shi)屏電(dian)(dian)(dian)(dian)源(yuan)(yuan)(yuan)，這種(zhong)不(bu)叫充電(dian)(dian)(dian)(dian)器(qi)(qi)(qi)。電(dian)(dian)(dian)(dian)源(yuan)(yuan)(yuan)適(shi)(shi)配器(qi)(qi)(qi)具(ju)備(bei)(bei)容積較小、綠色環保(bao)、多種(zhong)安全性維護、使(shi)用期長、運(yun)用覆蓋面廣等特(te)性，大概可(ke)分成桌面型電(dian)(dian)(dian)(dian)源(yuan)(yuan)(yuan)適(shi)(shi)配器(qi)(qi)(qi)、直插(cha)式電(dian)(dian)(dian)(dian)源(yuan)(yuan)(yuan)適(shi)(shi)配器(qi)(qi)(qi)、多通道(dao)電(dian)(dian)(dian)(dian)源(yuan)(yuan)(yuan)適(shi)(shi)配器(qi)(qi)(qi)、USB電(dian)(dian)(dian)(dian)源(yuan)(yuan)(yuan)適(shi)(shi)配器(qi)(qi)(qi)這些。電(dian)(dian)(dian)(dian)源(yuan)(yuan)(yuan)適(shi)(shi)配器(qi)(qi)(qi)包含(han)充電(dian)(dian)(dian)(dian)器(qi)(qi)(qi)，可(ke)是充電(dian)(dian)(dian)(dian)器(qi)(qi)(qi)不(bu)包含(han)電(dian)(dian)(dian)(dian)源(yuan)(yuan)(yuan)適(shi)(shi)配器(qi)(qi)(qi)。

　　充(chong)電(dian)(dian)(dian)(dian)(dian)器(qi)(qi)就是指只給(gei)電(dian)(dian)(dian)(dian)(dian)池充(chong)電(dian)(dian)(dian)(dian)(dian)的(de)電(dian)(dian)(dian)(dian)(dian)源，是在開關電(dian)(dian)(dian)(dian)(dian)源的(de)基本(ben)(ben)上再加一(yi)個(ge)電(dian)(dian)(dian)(dian)(dian)池充(chong)電(dian)(dian)(dian)(dian)(dian)檢驗和控制電(dian)(dian)(dian)(dian)(dian)路(lu)，如恒流、反接(jie)、浮充(chong)、均(jun)充(chong)工作電(dian)(dian)(dian)(dian)(dian)壓的(de)全自(zi)動調(diao)節(jie)這(zhe)些(xie)。普遍(bian)的(de)是USB充(chong)電(dian)(dian)(dian)(dian)(dian)器(qi)(qi)，也有手機(ji)上充(chong)電(dian)(dian)(dian)(dian)(dian)器(qi)(qi)、筆記本(ben)(ben)電(dian)(dian)(dian)(dian)(dian)腦電(dian)(dian)(dian)(dian)(dian)源、電(dian)(dian)(dian)(dian)(dian)動車充(chong)電(dian)(dian)(dian)(dian)(dian)器(qi)(qi)這(zhe)些(xie)，充(chong)電(dian)(dian)(dian)(dian)(dian)器(qi)(qi)一(yi)般(ban)是將220V轉換為適合的(de)交流電(dian)(dian)(dian)(dian)(dian)壓，依據(ju)電(dian)(dian)(dian)(dian)(dian)池的(de)種類，會提升一(yi)個(ge)電(dian)(dian)(dian)(dian)(dian)池充(chong)電(dian)(dian)(dian)(dian)(dian)管理(li)方法(fa)電(dian)(dian)(dian)(dian)(dian)源電(dian)(dian)(dian)(dian)(dian)路(lu)，具(ju)備(bei)對電(dian)(dian)(dian)(dian)(dian)池開展電(dian)(dian)(dian)(dian)(dian)池充(chong)電(dian)(dian)(dian)(dian)(dian)的(de)作用。

　　一(yi)直供電系統給機器(qi)設(she)備的(de)供電系統電源(yuan)一(yi)般都叫(jiao)電源(yuan)適(shi)配器(qi)，像給沈陽(yang)監控攝像頭(tou)或電子(zi)產品，與usb充(chong)電器(qi)在設(she)計方案規(gui)定中大不(bu)一(yi)樣(yang)。usb充(chong)電器(qi)規(gui)定考慮不(bu)一(yi)樣(yang)頻(pin)率段不(bu)一(yi)樣(yang)電流量的(de)必(bi)須，而監控器(qi)、監控攝像頭(tou)等機器(qi)設(she)備供電系統的(de)電源(yuan)適(shi)配器(qi)則偏重(zhong)電流量平穩(wen)。

　　電(dian)(dian)(dian)源適配器(qi)關(guan)鍵(jian)適用(yong)(yong)中小型家(jia)用(yong)(yong)電(dian)(dian)(dian)器(qi)、電(dian)(dian)(dian)子器(qi)件產品(pin)，大部(bu)分(fen)是恒壓源，維持輸(shu)出工作電(dian)(dian)(dian)壓穩定，隨機(ji)器(qi)設備(bei)負荷(he)功率而全自動調節輸(shu)出電(dian)(dian)(dian)流量。而開(kai)關(guan)電(dian)(dian)(dian)源是操縱全部(bu)電(dian)(dian)(dian)源開(kai)關(guan)的(de)變換(huan)電(dian)(dian)(dian)流量機(ji)器(qi)設備(bei)，適用(yong)(yong)全部(bu)的(de)電(dian)(dian)(dian)子產品(pin)。