Xc=1/(2Pifc); x# |- X5 P( g& f! X" x
if f=0 Xc is infinite, so capacitor block DC. * w1 [* c. Z/ B( d- b/ k; ]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 - Q5 S. s$ B) ?! _* ^+ p1 v
为什么电容器阻断DC 而通AC?
8 ?3 Y! j0 S: @+ ]# r; R4 t, L, ^# S3 ]. ]# M
I would like to ask a question, just for curiosity, if you do not mind. 6 u* k, [7 d9 M+ e ) @5 ~: o+ G1 _" c7 Z# t* d3 {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
