Xc=1/(2Pifc) 1 N$ ^: n1 y( {# S2 Gif f=0 Xc is infinite, so capacitor block DC.+ J) V; f& G+ I6 E; [& z2 g0 q/ _
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 3 x2 K1 E. I: p) \' V j
为什么电容器阻断DC 而通AC?
8 d; {; _% @. J6 i& D' j% n, \, T 5 f/ m3 A# X- Q/ U: k+ {I would like to ask a question, just for curiosity, if you do not mind." S0 v5 l: c/ `' g6 v- P
& `; F" d" O0 V- N" N; F0 [
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
