今天電源適配器廠家為(wei)大(da)家介紹一下有關(guan)電(dian)源適(shi)配(pei)器(qi)我們(men)需要了(le)解的一些基(ji)本知識。

首先一(yi)般(ban)而言，普通電源適配器的(de)真(zhen)正空載(zai)電壓不一(yi)定與標稱電壓相同，因為電子元(yuan)件(jian)(jian)的(de)特性(xing)不能完全(quan)一(yi)致，因此允許(xu)某些誤差。根據使(shi)用(yong)需(xu)要，可(ke)將(jiang)條(tiao)件(jian)(jian)控制在約0.1％至5％。誤差越小(xiao)，電子元(yuan)件(jian)(jian)的(de)一(yi)致性(xing)要求(qiu)越高(gao)，工業生產(chan)的(de)成本就越高(gao)，當(dang)然價格(ge)也越貴(gui)。

第(di)二個(ge)是(shi)電(dian)(dian)(dian)(dian)源(yuan)的(de)(de)標稱(cheng)電(dian)(dian)(dian)(dian)流(liu)(liu)值：無論任何(he)電(dian)(dian)(dian)(dian)源(yuan)都有(you)(you)一(yi)定的(de)(de)內(nei)(nei)阻，所以(yi)當輸(shu)出(chu)(chu)電(dian)(dian)(dian)(dian)流(liu)(liu)時(shi)，內(nei)(nei)部會有(you)(you)一(yi)個(ge)電(dian)(dian)(dian)(dian)壓(ya)(ya)(ya)降(jiang)(jiang)(jiang)，等于輸(shu)出(chu)(chu)電(dian)(dian)(dian)(dian)流(liu)(liu)乘以(yi)內(nei)(nei)部電(dian)(dian)(dian)(dian)阻電(dian)(dian)(dian)(dian)源(yuan)。一(yi)種是(shi)產(chan)(chan)生熱量，等于輸(shu)出(chu)(chu)電(dian)(dian)(dian)(dian)流(liu)(liu)的(de)(de)平(ping)方乘以(yi)內(nei)(nei)部電(dian)(dian)(dian)(dian)阻，所以(yi)電(dian)(dian)(dian)(dian)源(yuan)會很熱，另一(yi)種是(shi)將輸(shu)出(chu)(chu)電(dian)(dian)(dian)(dian)壓(ya)(ya)(ya)改(gai)為標稱(cheng)電(dian)(dian)(dian)(dian)壓(ya)(ya)(ya)減(jian)去(qu)內(nei)(nei)部電(dian)(dian)(dian)(dian)壓(ya)(ya)(ya)降(jiang)(jiang)(jiang)，導致產(chan)(chan)量降(jiang)(jiang)(jiang)低電(dian)(dian)(dian)(dian)壓(ya)(ya)(ya)。當輸(shu)出(chu)(chu)電(dian)(dian)(dian)(dian)流(liu)(liu)達到此值時(shi)，輸(shu)出(chu)(chu)電(dian)(dian)(dian)(dian)壓(ya)(ya)(ya)降(jiang)(jiang)(jiang)至標稱(cheng)電(dian)(dian)(dian)(dian)壓(ya)(ya)(ya)的(de)(de)95％或其他比例。每個(ge)制造商可以(yi)根據負載產(chan)(chan)品的(de)(de)不同需求設置更(geng)高或更(geng)低的(de)(de)比例。該電(dian)(dian)(dian)(dian)流(liu)(liu)值是(shi)標稱(cheng)電(dian)(dian)(dian)(dian)流(liu)(liu)。

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