Xc=1/(2Pifc) 5 S* b' |0 J6 U0 N. dif f=0 Xc is infinite, so capacitor block DC. , \0 r* v4 V. ~$ g6 efor 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 2 E) {5 J. l Z! Q( u+ s. S$ m
为什么电容器阻断DC 而通AC?
: I& n" @5 G5 r8 N9 \0 j ~5 b4 _5 W% s$ r6 x; UI would like to ask a question, just for curiosity, if you do not mind. - h! j6 T. [ [' }' v {# X5 V+ \8 O7 B+ }, e1 S, }
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
