的(de)設(she)(she)計(ji)(ji)一(yi)般包(bao)括變(bian)壓(ya)(ya)(ya)、整(zheng)流(liu)(liu)、濾波、穩(wen)壓(ya)(ya)(ya)四個基(ji)本環節(jie)。為了提(ti)(ti)高電(dian)(dian)(dian)源(yuan)的(de)質量(liang)及其可(ke)靠(kao)性(xing)，需對(dui)電(dian)(dian)(dian)源(yuan)輸出電(dian)(dian)(dian)壓(ya)(ya)(ya)進行采樣(yang)、比較、放大，并(bing)用(yong)此(ci)(ci)誤差放大信號來調節(jie)其輸入電(dian)(dian)(dian)壓(ya)(ya)(ya)，使(shi)得負載(zai)變(bian)化時輸出電(dian)(dian)(dian)壓(ya)(ya)(ya)保持穩(wen)定。此(ci)(ci)外，為了提(ti)(ti)高電(dian)(dian)(dian)源(yuan)的(de)使(shi)用(yong)安全性(xing)能，需設(she)(she)計(ji)(ji)簡單可(ke)靠(kao)的(de)過壓(ya)(ya)(ya)過流(liu)(liu)保護(hu)電(dian)(dian)(dian)路(lu)(lu)，防(fang)止(zhi)電(dian)(dian)(dian)壓(ya)(ya)(ya)電(dian)(dian)(dian)流(liu)(liu)過大時損壞負載(zai)元件。以下將從電(dian)(dian)(dian)源(yuan)主電(dian)(dian)(dian)路(lu)(lu)、控制電(dian)(dian)(dian)路(lu)(lu)、保護(hu)電(dian)(dian)(dian)路(lu)(lu)設(she)(she)計(ji)(ji)等3個方面簡要(yao)介紹直流(liu)(liu)穩(wen)壓(ya)(ya)(ya)電(dian)(dian)(dian)源(yuan)的(de)制作方法(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(ba)高壓交(jiao)(jiao)流(liu)(liu)(liu)電(dian)變為(wei)所需要(yao)的(de)(de)(de)低壓交(jiao)(jiao)流(liu)(liu)(liu)電(dian);整流(liu)(liu)(liu)器(qi)(qi)把(ba)交(jiao)(jiao)流(liu)(liu)(liu)電(dian)變為(wei)脈動直流(liu)(liu)(liu)電(dian);濾波(bo)(bo)器(qi)(qi)濾除直流(liu)(liu)(liu)中的(de)(de)(de)交(jiao)(jiao)流(liu)(liu)(liu)成分(fen);穩壓器(qi)(qi)把(ba)波(bo)(bo)動較大的(de)(de)(de)直流(liu)(liu)(liu)電(dian)壓變為(wei)穩定的(de)(de)(de)直流(liu)(liu)(liu)電(dian)壓輸出。