wuhaojie666666:
...有公式...高数基础..电工少学时里有公式...不过太麻烦了...做焊机...跟经验值和波纹系数就够了....单相全波取0.45...三相全波取2.34...依据整流桥而定...........................................................................................如160A...160X0.04+20=26.4V...26.4X160=4224...4224X0.45=1900.8uf......电工少学时或电子技术学会..一切电容都搞定....