電源模塊、電源適配器和充電(dian)器(qi)三者全是(shi)電(dian)源，只不過在主(zhu)要用(yong)途上大不一樣，他們全是(shi)采用(yong)開關電(dian)源方式的(de)。可是(shi)小量充電(dian)器(qi)并(bing)不是(shi)采用(yong)開關電(dian)源方法(fa)做(zuo)的(de)，電(dian)源適(shi)配器(qi)也是(shi)采用(yong)變電(dian)器(qi)輸(shu)出和線形整流器(qi)穩(wen)壓管輸(shu)出的(de)。

　　開(kai)關電(dian)源(yuan)是(shi)一種(zhong)(zhong)將電(dian)壓220V交流(liu)電(dian)流(liu)變(bian)為底壓交流(liu)電(dian)的(de)一種(zhong)(zhong)方法，差別于(yu)傳(chuan)統式工(gong)頻變(bian)壓器(qi)，一般(ban)采用(yong)這類電(dian)源(yuan)開(kai)關轉換工(gong)作(zuo)電(dian)壓技術(shu)性的(de)電(dian)源(yuan)稱之(zhi)為開(kai)關電(dian)源(yuan)。電(dian)源(yuan)模塊就是(shi)說一種(zhong)(zhong)中小型的(de)開(kai)關電(dian)源(yuan)，關鍵(jian)(jian)分成(cheng)AC-DC電(dian)源(yuan)模塊和DC-DC電(dian)源(yuan)模塊。由于(yu)重量輕，一般(ban)得加外場元器(qi)件(jian)應用(yong)，關鍵(jian)(jian)做為工(gong)作(zuo)電(dian)壓變(bian)換功(gong)效，為系統軟件(jian)供電(dian)系統，不具備電(dian)池充電(dian)作(zuo)用(yong)。

　　電(dian)(dian)(dian)(dian)(dian)源(yuan)(yuan)(yuan)(yuan)適(shi)(shi)配(pei)(pei)器(qi)就是(shi)指(zhi)給機(ji)器(qi)設備出(chu)示電(dian)(dian)(dian)(dian)(dian)磁能的電(dian)(dian)(dian)(dian)(dian)源(yuan)(yuan)(yuan)(yuan)，如臺式電(dian)(dian)(dian)(dian)(dian)腦主機(ji)電(dian)(dian)(dian)(dian)(dian)源(yuan)(yuan)(yuan)(yuan)、復印機(ji)電(dian)(dian)(dian)(dian)(dian)源(yuan)(yuan)(yuan)(yuan)、顯示屏電(dian)(dian)(dian)(dian)(dian)源(yuan)(yuan)(yuan)(yuan)，這種(zhong)(zhong)不叫(jiao)充電(dian)(dian)(dian)(dian)(dian)器(qi)。電(dian)(dian)(dian)(dian)(dian)源(yuan)(yuan)(yuan)(yuan)適(shi)(shi)配(pei)(pei)器(qi)具備容積較小、綠色環保、多種(zhong)(zhong)安(an)全性(xing)維護(hu)、使用期長(chang)、運用覆蓋面(mian)廣等(deng)特性(xing)，大概可分(fen)成(cheng)桌面(mian)型電(dian)(dian)(dian)(dian)(dian)源(yuan)(yuan)(yuan)(yuan)適(shi)(shi)配(pei)(pei)器(qi)、直插式電(dian)(dian)(dian)(dian)(dian)源(yuan)(yuan)(yuan)(yuan)適(shi)(shi)配(pei)(pei)器(qi)、多通道電(dian)(dian)(dian)(dian)(dian)源(yuan)(yuan)(yuan)(yuan)適(shi)(shi)配(pei)(pei)器(qi)、USB電(dian)(dian)(dian)(dian)(dian)源(yuan)(yuan)(yuan)(yuan)適(shi)(shi)配(pei)(pei)器(qi)這些(xie)。電(dian)(dian)(dian)(dian)(dian)源(yuan)(yuan)(yuan)(yuan)適(shi)(shi)配(pei)(pei)器(qi)包(bao)含充電(dian)(dian)(dian)(dian)(dian)器(qi)，可是(shi)充電(dian)(dian)(dian)(dian)(dian)器(qi)不包(bao)含電(dian)(dian)(dian)(dian)(dian)源(yuan)(yuan)(yuan)(yuan)適(shi)(shi)配(pei)(pei)器(qi)。

　　充(chong)(chong)(chong)(chong)(chong)電(dian)(dian)(dian)(dian)器就是(shi)(shi)指只給電(dian)(dian)(dian)(dian)池(chi)充(chong)(chong)(chong)(chong)(chong)電(dian)(dian)(dian)(dian)的電(dian)(dian)(dian)(dian)源，是(shi)(shi)在(zai)開(kai)關電(dian)(dian)(dian)(dian)源的基(ji)本上再(zai)加(jia)一個(ge)電(dian)(dian)(dian)(dian)池(chi)充(chong)(chong)(chong)(chong)(chong)電(dian)(dian)(dian)(dian)檢驗和(he)控制電(dian)(dian)(dian)(dian)路(lu)，如恒流、反(fan)接(jie)、浮充(chong)(chong)(chong)(chong)(chong)、均(jun)充(chong)(chong)(chong)(chong)(chong)工作電(dian)(dian)(dian)(dian)壓的全自動調節(jie)這些(xie)。普遍的是(shi)(shi)USB充(chong)(chong)(chong)(chong)(chong)電(dian)(dian)(dian)(dian)器，也有(you)手機上充(chong)(chong)(chong)(chong)(chong)電(dian)(dian)(dian)(dian)器、筆記(ji)本電(dian)(dian)(dian)(dian)腦電(dian)(dian)(dian)(dian)源、電(dian)(dian)(dian)(dian)動車充(chong)(chong)(chong)(chong)(chong)電(dian)(dian)(dian)(dian)器這些(xie)，充(chong)(chong)(chong)(chong)(chong)電(dian)(dian)(dian)(dian)器一般(ban)是(shi)(shi)將220V轉換(huan)為適合的交流電(dian)(dian)(dian)(dian)壓，依據電(dian)(dian)(dian)(dian)池(chi)的種類，會(hui)提升一個(ge)電(dian)(dian)(dian)(dian)池(chi)充(chong)(chong)(chong)(chong)(chong)電(dian)(dian)(dian)(dian)管理(li)方法電(dian)(dian)(dian)(dian)源電(dian)(dian)(dian)(dian)路(lu)，具(ju)備對電(dian)(dian)(dian)(dian)池(chi)開(kai)展電(dian)(dian)(dian)(dian)池(chi)充(chong)(chong)(chong)(chong)(chong)電(dian)(dian)(dian)(dian)的作用。

　　一(yi)直供(gong)電系(xi)統給機器(qi)(qi)(qi)設(she)備的供(gong)電系(xi)統電源(yuan)一(yi)般都(dou)叫(jiao)電源(yuan)適(shi)配器(qi)(qi)(qi)，像給沈陽監控(kong)攝像頭(tou)或電子產品(pin)，與usb充(chong)電器(qi)(qi)(qi)在(zai)設(she)計(ji)方(fang)案(an)規(gui)定中大不一(yi)樣(yang)。usb充(chong)電器(qi)(qi)(qi)規(gui)定考慮不一(yi)樣(yang)頻率段不一(yi)樣(yang)電流量(liang)(liang)的必須，而監控(kong)器(qi)(qi)(qi)、監控(kong)攝像頭(tou)等機器(qi)(qi)(qi)設(she)備供(gong)電系(xi)統的電源(yuan)適(shi)配器(qi)(qi)(qi)則偏(pian)重電流量(liang)(liang)平穩。

　　電(dian)源(yuan)(yuan)(yuan)(yuan)適配器關鍵適用(yong)中小型(xing)家用(yong)電(dian)器、電(dian)子器件產品，大部分是恒壓(ya)源(yuan)(yuan)(yuan)(yuan)，維持輸出工作電(dian)壓(ya)穩定，隨機(ji)器設備負荷功率而全自動調(diao)節輸出電(dian)流(liu)量。而開關電(dian)源(yuan)(yuan)(yuan)(yuan)是操(cao)縱全部電(dian)源(yuan)(yuan)(yuan)(yuan)開關的(de)變換(huan)電(dian)流(liu)量機(ji)器設備，適用(yong)全部的(de)電(dian)子產品。