Xc=1/(2Pifc)+ t d# S" e, [) n; c. {
if f=0 Xc is infinite, so capacitor block DC.: M# P7 B3 u" p4 m
for AC, frequence is 60Hz(in north american), so Xc is a specific value. as a result , it can conduct AC.
原帖由 爱城电工 于 2009-1-12 19:16 发表 , e" K3 Q, C7 g
为什么电容器阻断DC 而通AC?
: N I" e5 V+ o0 N
. J/ A" y8 ]1 n- c7 [& P, h# E
I would like to ask a question, just for curiosity, if you do not mind.4 X A/ o1 W& b f0 ?
6 l J) i+ g% x/ x
Is that a real question during your interview for an electrician job?
狗仔卡
鲜花(
鸡蛋(
发表于 2009-1-12 19:16
提升卡
置顶卡
沉默卡
喧嚣卡
变色卡
显身卡
发表于 2009-1-16 21:47
