有插墻式電源適配器和桌面式電源適配器,插墻式電源適配器也稱為壁掛式電源適配器。其實可以簡單來解釋，插墻式電源適配器就是本體可以直接插在插板上使用的電源適配器.=，而桌面式電源適配器就是本體需要放在桌面上的電源適配器。桌面式電源適配器和插墻式電源適配器的區別還有就是,桌面式電源適配器需要AC線與市電連接。

電(dian)(dian)(dian)(dian)源(yuan)適(shi)配器(qi)在(zai)(zai)(zai)安防產(chan)(chan)(chan)(chan)品(pin),通(tong)訊(xun)產(chan)(chan)(chan)(chan)品(pin),以(yi)及小家電(dian)(dian)(dian)(dian)類產(chan)(chan)(chan)(chan)品(pin)和(he)(he)消費(fei)類電(dian)(dian)(dian)(dian)子(zi)產(chan)(chan)(chan)(chan)品(pin)中使用尤為廣泛,特別在(zai)(zai)(zai)便(bian)攜類消費(fei)類電(dian)(dian)(dian)(dian)子(zi)和(he)(he)通(tong)訊(xun)產(chan)(chan)(chan)(chan)品(pin)中一(yi)般以(yi)10W以(yi)內居多(duo),例如智能(neng)手機和(he)(he)平板電(dian)(dian)(dian)(dian)腦一(yi)般采(cai)(cai)用5-10W電(dian)(dian)(dian)(dian)源(yuan)適(shi)配器(qi)供電(dian)(dian)(dian)(dian),而計算機周邊,安防產(chan)(chan)(chan)(chan)品(pin),小型(xing)家電(dian)(dian)(dian)(dian)類產(chan)(chan)(chan)(chan)品(pin)一(yi)般采(cai)(cai)用36W以(yi)下(xia)電(dian)(dian)(dian)(dian)源(yuan)適(shi)配器(qi)居多(duo),特別在(zai)(zai)(zai)能(neng)源(yuan)緊(jin)張提倡(chang)節能(neng)環保(bao)的今(jin)天,這(zhe)個功率段的產(chan)(chan)(chan)(chan)品(pin)最為常(chang)見。而筆記本,電(dian)(dian)(dian)(dian)視等產(chan)(chan)(chan)(chan)品(pin)一(yi)般使用120W以(yi)下(xia)的電(dian)(dian)(dian)(dian)源(yuan)適(shi)配器(qi),而大于100W的多(duo)采(cai)(cai)用內置電(dian)(dian)(dian)(dian)源(yuan).但也有200W以(yi)下(xia)采(cai)(cai)用外置電(dian)(dian)(dian)(dian)源(yuan)適(shi)配器(qi)的.但是數量(liang)相對比較(jiao)少。

　　　 一(yi)般(ban)36W以(yi)下(xia)多采用(yong)(yong)插(cha)(cha)墻式電源(yuan)(yuan)(yuan)適(shi)配(pei)器(qi)(qi)(qi),這(zhe)種(zhong)電源(yuan)(yuan)(yuan)適(shi)配(pei)器(qi)(qi)(qi)的(de)(de)特(te)點是不需要AC線(xian)材,這(zhe)樣成本較(jiao)為(wei)節(jie)省(sheng),節(jie)約空(kong)間(jian),不需要置放電源(yuan)(yuan)(yuan)的(de)(de)臺面(mian)(mian)(mian)貨(huo)空(kong)間(jian)，直接插(cha)(cha)在插(cha)(cha)板上(shang)(shang)，也比較(jiao)安全。有(you)少數36W以(yi)下(xia)電源(yuan)(yuan)(yuan)適(shi)配(pei)器(qi)(qi)(qi)采用(yong)(yong)桌(zhuo)面(mian)(mian)(mian)式,這(zhe)種(zhong)一(yi)般(ban)是因(yin)為(wei)考慮到使用(yong)(yong)產品(pin)離(li)(li)AC插(cha)(cha)板距離(li)(li)較(jiao)遠或者因(yin)為(wei)電源(yuan)(yuan)(yuan)適(shi)配(pei)器(qi)(qi)(qi)體積(ji)較(jiao)大(da),質量(liang)較(jiao)重(zhong)(zhong),或者電源(yuan)(yuan)(yuan)適(shi)配(pei)器(qi)(qi)(qi)上(shang)(shang)面(mian)(mian)(mian)掛重(zhong)(zhong)較(jiao)重(zhong)(zhong)。例(li)如多口USB電源(yuan)(yuan)(yuan)適(shi)配(pei)器(qi)(qi)(qi),為(wei)了避免使用(yong)(yong)上(shang)(shang)面(mian)(mian)(mian)插(cha)(cha)的(de)(de)USB產品(pin)多而(er)導致插(cha)(cha)不穩(wen)的(de)(de)情況.而(er)大(da)于36W的(de)(de)電源(yuan)(yuan)(yuan)適(shi)配(pei)器(qi)(qi)(qi)就不合(he)適(shi)做成插(cha)(cha)墻式。因(yin)為(wei)其體積(ji)和重(zhong)(zhong)量(liang)都較(jiao)大(da)了.所以(yi)36W以(yi)上(shang)(shang)一(yi)般(ban)采用(yong)(yong)桌(zhuo)面(mian)(mian)(mian)式。

　　　 而早期我(wo)們接觸得多的就(jiu)是線性(xing)電(dian)源(yuan)(yuan)了.例如上世紀(ji)使用的復讀機.單放機,其電(dian)源(yuan)(yuan)笨重體(ti)積(ji)也較大。可能(neng)還會(hui)遇到從插(cha)板上面直接因為插(cha)不穩而掉下來的尷尬(ga)情況。可是隨著科技的發展(zhan)。以及對(dui)能(neng)源(yuan)(yuan)愈加緊張,對(dui)能(neng)效要(yao)求(qiu)越來越高,消費類電(dian)子產品(pin)對(dui)電(dian)源(yuan)(yuan)適(shi)(shi)配器有高效率(lv),寬輸入電(dian)壓(ya)范圍的要(yao)求(qiu),以及銅(tong),鐵和人力成本的增加,這(zhe)線性(xing)變壓(ya)器大都逐漸被開關電(dian)源(yuan)(yuan)適(shi)(shi)配器所取代。