Xc=1/(2Pifc)1 h. g7 J0 U [
if f=0 Xc is infinite, so capacitor block DC.2 @$ u. w9 S& e. Y5 j2 R) f
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 9 v: z h( p1 ~! K
为什么电容器阻断DC 而通AC?
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) u8 T8 M- Z5 c7 V. V% j% d7 }0 pI would like to ask a question, just for curiosity, if you do not mind.9 G+ d/ [3 M/ l: w M& R( V
6 \4 }) U' W R% `7 @
Is that a real question during your interview for an electrician job?
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发表于 2009-1-12 19:16
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发表于 2009-1-16 21:47
