如图所示电路中,输入电压 u i 是正弦波,调节 R B ,用示波器测得 u o 的波形分别如图 b 、 c 、 d 所示,其原因分别是( )。 prefix="o" ns="urn:schemas-microsoft-com:office:office" ?xml:namespace> prefix="v" ns="urn:schemas-microsoft-com:vml" ?xml:namespace>
A.
饱和失真、截止失真、 u i 过大
B.
截止失真、饱和失真、 u i 过大
C.
截止失真、饱和失真、 u i 过小
D.
饱和失真、截止失真、 u i 过小
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