的設計(ji)(ji)(ji)一(yi)般包括變壓(ya)(ya)(ya)、整流、濾波、穩(wen)壓(ya)(ya)(ya)四(si)個基本(ben)環節。為(wei)了(le)提(ti)高電(dian)(dian)(dian)源(yuan)的質量(liang)及其可靠性，需對電(dian)(dian)(dian)源(yuan)輸出(chu)電(dian)(dian)(dian)壓(ya)(ya)(ya)進行采樣、比較、放大，并用(yong)此(ci)誤差放大信(xin)號來調(diao)節其輸入電(dian)(dian)(dian)壓(ya)(ya)(ya)，使(shi)得(de)負載變化時輸出(chu)電(dian)(dian)(dian)壓(ya)(ya)(ya)保(bao)(bao)持穩(wen)定(ding)。此(ci)外，為(wei)了(le)提(ti)高電(dian)(dian)(dian)源(yuan)的使(shi)用(yong)安全(quan)性能，需設計(ji)(ji)(ji)簡單(dan)可靠的過壓(ya)(ya)(ya)過流保(bao)(bao)護(hu)電(dian)(dian)(dian)路(lu)，防止電(dian)(dian)(dian)壓(ya)(ya)(ya)電(dian)(dian)(dian)流過大時損壞負載元件。以下將從電(dian)(dian)(dian)源(yuan)主(zhu)電(dian)(dian)(dian)路(lu)、控制電(dian)(dian)(dian)路(lu)、保(bao)(bao)護(hu)電(dian)(dian)(dian)路(lu)設計(ji)(ji)(ji)等3個方(fang)面簡要介(jie)紹直(zhi)流穩(wen)壓(ya)(ya)(ya)電(dian)(dian)(dian)源(yuan)的制作方(fang)法(fa)。

主電路部分設計主要包括電源變壓器、整流電路、濾波電路、穩壓電路設計(圖1)。變壓器把高(gao)壓(ya)(ya)交流(liu)電(dian)(dian)變(bian)(bian)為(wei)所需要(yao)的(de)低壓(ya)(ya)交流(liu)電(dian)(dian);整(zheng)流(liu)器把交流(liu)電(dian)(dian)變(bian)(bian)為(wei)脈動(dong)直流(liu)電(dian)(dian);濾波器濾除直流(liu)中的(de)交流(liu)成分;穩壓(ya)(ya)器把波動(dong)較大的(de)直流(liu)電(dian)(dian)壓(ya)(ya)變(bian)(bian)為(wei)穩定的(de)直流(liu)電(dian)(dian)壓(ya)(ya)輸出(chu)。