電壓增益的小問題 - 考試
By James
at 2012-12-24T16:38
at 2012-12-24T16:38
Table of Contents
如下照片
http://ppt.cc/bWGZ
我想問的是第四題
截止頻率為1/RC
所以G(S)=1/2
那為什麼電壓增益為多少分貝答案卻是-3dB呢?
不是應為20log(1/2)=-6dB
--
http://ppt.cc/bWGZ
我想問的是第四題
截止頻率為1/RC
所以G(S)=1/2
那為什麼電壓增益為多少分貝答案卻是-3dB呢?
不是應為20log(1/2)=-6dB
--
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考試
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at 2012-12-27T09:21
at 2012-12-27T09:21
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at 2012-12-29T05:55
at 2012-12-29T05:55
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