s闭合前,iL(0)=15/(100+200)=0.05A
s闭合后,左边3个元件用戴维南等效,变成7.5v与50欧串联,则用拉氏变换,叠加原理,
iL=零状态解+零输入解,即
IL=7.5/s[(50+200)+s*0.5]+iL(0)(200+50)/(200+50+s*0.5)
iL=0.03+0.02e^(-500t)
s闭合前,iL(0)=15/(100+200)=0.05A
s闭合后,左边3个元件用戴维南等效,变成7.5v与50欧串联,则用拉氏变换,叠加原理,
iL=零状态解+零输入解,即
IL=7.5/s[(50+200)+s*0.5]+iL(0)(200+50)/(200+50+s*0.5)
iL=0.03+0.02e^(-500t)