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【多选题】
关于PN结的结电容下面表述正确的是()
A.
PN结的结电容包括势垒电容和扩散电容两部分。
B.
当PN结反偏时,其结电容主为势垒电容。
C.
当PN结正向导通后,其结电容主要为扩散电容。
D.
由于结电容的存在,当加在PN结两端电压的变化频率足够大小,PN结将失去单向导电性。
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