電源模塊、電源適配器和(he)充電器(qi)三者全是(shi)電源(yuan)，只不過(guo)在主要用(yong)途(tu)上大不一樣，他們全是(shi)采(cai)用(yong)開關(guan)電源(yuan)方(fang)式的。可是(shi)小量充電器(qi)并不是(shi)采(cai)用(yong)開關(guan)電源(yuan)方(fang)法做(zuo)的，電源(yuan)適配器(qi)也是(shi)采(cai)用(yong)變(bian)電器(qi)輸出和(he)線形整流(liu)器(qi)穩壓管輸出的。

　　開(kai)關(guan)(guan)電源是(shi)一(yi)種(zhong)將電壓(ya)(ya)(ya)220V交流(liu)(liu)(liu)電流(liu)(liu)(liu)變(bian)為(wei)(wei)底(di)壓(ya)(ya)(ya)交流(liu)(liu)(liu)電的(de)(de)一(yi)種(zhong)方法，差別于(yu)傳統(tong)式工頻(pin)變(bian)壓(ya)(ya)(ya)器，一(yi)般采用這類電源開(kai)關(guan)(guan)轉換工作(zuo)電壓(ya)(ya)(ya)技術性的(de)(de)電源稱之(zhi)為(wei)(wei)開(kai)關(guan)(guan)電源。電源模(mo)(mo)塊就是(shi)說一(yi)種(zhong)中小型的(de)(de)開(kai)關(guan)(guan)電源，關(guan)(guan)鍵分成AC-DC電源模(mo)(mo)塊和DC-DC電源模(mo)(mo)塊。由于(yu)重量(liang)輕(qing)，一(yi)般得加(jia)外(wai)場(chang)元器件應用，關(guan)(guan)鍵做為(wei)(wei)工作(zuo)電壓(ya)(ya)(ya)變(bian)換功效，為(wei)(wei)系統(tong)軟(ruan)件供電系統(tong)，不具(ju)備電池(chi)充電作(zuo)用。

　　電(dian)(dian)(dian)源(yuan)(yuan)(yuan)(yuan)(yuan)(yuan)適(shi)配(pei)(pei)(pei)器(qi)(qi)(qi)(qi)(qi)就(jiu)是指(zhi)給機器(qi)(qi)(qi)(qi)(qi)設備出示電(dian)(dian)(dian)磁能的電(dian)(dian)(dian)源(yuan)(yuan)(yuan)(yuan)(yuan)(yuan)，如臺式電(dian)(dian)(dian)腦主機電(dian)(dian)(dian)源(yuan)(yuan)(yuan)(yuan)(yuan)(yuan)、復印機電(dian)(dian)(dian)源(yuan)(yuan)(yuan)(yuan)(yuan)(yuan)、顯(xian)示屏(ping)電(dian)(dian)(dian)源(yuan)(yuan)(yuan)(yuan)(yuan)(yuan)，這(zhe)種(zhong)(zhong)不(bu)叫充(chong)電(dian)(dian)(dian)器(qi)(qi)(qi)(qi)(qi)。電(dian)(dian)(dian)源(yuan)(yuan)(yuan)(yuan)(yuan)(yuan)適(shi)配(pei)(pei)(pei)器(qi)(qi)(qi)(qi)(qi)具備容積較小(xiao)、綠色環保(bao)、多種(zhong)(zhong)安全(quan)性(xing)維護(hu)、使用期長、運用覆蓋(gai)面(mian)廣等特性(xing)，大概可分成桌面(mian)型電(dian)(dian)(dian)源(yuan)(yuan)(yuan)(yuan)(yuan)(yuan)適(shi)配(pei)(pei)(pei)器(qi)(qi)(qi)(qi)(qi)、直插(cha)式電(dian)(dian)(dian)源(yuan)(yuan)(yuan)(yuan)(yuan)(yuan)適(shi)配(pei)(pei)(pei)器(qi)(qi)(qi)(qi)(qi)、多通道電(dian)(dian)(dian)源(yuan)(yuan)(yuan)(yuan)(yuan)(yuan)適(shi)配(pei)(pei)(pei)器(qi)(qi)(qi)(qi)(qi)、USB電(dian)(dian)(dian)源(yuan)(yuan)(yuan)(yuan)(yuan)(yuan)適(shi)配(pei)(pei)(pei)器(qi)(qi)(qi)(qi)(qi)這(zhe)些。電(dian)(dian)(dian)源(yuan)(yuan)(yuan)(yuan)(yuan)(yuan)適(shi)配(pei)(pei)(pei)器(qi)(qi)(qi)(qi)(qi)包含(han)充(chong)電(dian)(dian)(dian)器(qi)(qi)(qi)(qi)(qi)，可是充(chong)電(dian)(dian)(dian)器(qi)(qi)(qi)(qi)(qi)不(bu)包含(han)電(dian)(dian)(dian)源(yuan)(yuan)(yuan)(yuan)(yuan)(yuan)適(shi)配(pei)(pei)(pei)器(qi)(qi)(qi)(qi)(qi)。

　　充(chong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)器(qi)就是(shi)指(zhi)只給電(dian)(dian)(dian)(dian)(dian)(dian)(dian)池充(chong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)的(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)源，是(shi)在開關電(dian)(dian)(dian)(dian)(dian)(dian)(dian)源的(de)(de)(de)基本上(shang)再加一個(ge)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)池充(chong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)檢驗(yan)和控制電(dian)(dian)(dian)(dian)(dian)(dian)(dian)路，如恒流(liu)、反接、浮充(chong)、均充(chong)工作電(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓的(de)(de)(de)全自動調節這(zhe)些(xie)。普遍的(de)(de)(de)是(shi)USB充(chong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)器(qi)，也有(you)手機上(shang)充(chong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)器(qi)、筆(bi)記本電(dian)(dian)(dian)(dian)(dian)(dian)(dian)腦電(dian)(dian)(dian)(dian)(dian)(dian)(dian)源、電(dian)(dian)(dian)(dian)(dian)(dian)(dian)動車(che)充(chong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)器(qi)這(zhe)些(xie)，充(chong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)器(qi)一般是(shi)將220V轉(zhuan)換為適合的(de)(de)(de)交流(liu)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓，依據(ju)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)池的(de)(de)(de)種類，會提升一個(ge)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)池充(chong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)管理方(fang)法電(dian)(dian)(dian)(dian)(dian)(dian)(dian)源電(dian)(dian)(dian)(dian)(dian)(dian)(dian)路，具備對電(dian)(dian)(dian)(dian)(dian)(dian)(dian)池開展電(dian)(dian)(dian)(dian)(dian)(dian)(dian)池充(chong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)的(de)(de)(de)作用(yong)。

　　一(yi)直供電(dian)系統給(gei)機(ji)器(qi)(qi)(qi)設備(bei)的供電(dian)系統電(dian)源(yuan)一(yi)般都叫電(dian)源(yuan)適配器(qi)(qi)(qi)，像(xiang)給(gei)沈陽監控攝像(xiang)頭(tou)(tou)或電(dian)子產品，與usb充電(dian)器(qi)(qi)(qi)在(zai)設計方(fang)案規定(ding)中大不一(yi)樣(yang)(yang)。usb充電(dian)器(qi)(qi)(qi)規定(ding)考(kao)慮不一(yi)樣(yang)(yang)頻率段不一(yi)樣(yang)(yang)電(dian)流量的必須，而監控器(qi)(qi)(qi)、監控攝像(xiang)頭(tou)(tou)等(deng)機(ji)器(qi)(qi)(qi)設備(bei)供電(dian)系統的電(dian)源(yuan)適配器(qi)(qi)(qi)則偏重電(dian)流量平(ping)穩。

　　電(dian)(dian)(dian)源(yuan)適(shi)配器(qi)(qi)關(guan)鍵適(shi)用中小型家用電(dian)(dian)(dian)器(qi)(qi)、電(dian)(dian)(dian)子(zi)器(qi)(qi)件產品，大部分(fen)是(shi)恒壓源(yuan)，維持輸出(chu)工作電(dian)(dian)(dian)壓穩定(ding)，隨機器(qi)(qi)設備負荷功率而全自(zi)動調節(jie)輸出(chu)電(dian)(dian)(dian)流(liu)量(liang)。而開(kai)關(guan)電(dian)(dian)(dian)源(yuan)是(shi)操(cao)縱全部電(dian)(dian)(dian)源(yuan)開(kai)關(guan)的變(bian)換電(dian)(dian)(dian)流(liu)量(liang)機器(qi)(qi)設備，適(shi)用全部的電(dian)(dian)(dian)子(zi)產品。