104關務 高頻3dB頻率疑問 - 考試

By Damian
at 2017-10-18T23:57
at 2017-10-18T23:57
Table of Contents
題目如下(含書本解答)
https://imgur.com/a/MKdRo
小弟疑問在於算出Cgs 及 Cgd 後,研判此為高頻相依
只是不曉得為何書本卻用高頻獨立的公式來求3dB頻率...
以下是個人解法,字醜請見諒
https://imgur.com/a/BuRul
不知是觀念搞錯還是書本詳解有問題...
勞煩大大給予精闢解答,謝謝。
--
https://imgur.com/a/MKdRo
小弟疑問在於算出Cgs 及 Cgd 後,研判此為高頻相依
只是不曉得為何書本卻用高頻獨立的公式來求3dB頻率...
以下是個人解法,字醜請見諒
https://imgur.com/a/BuRul
不知是觀念搞錯還是書本詳解有問題...
勞煩大大給予精闢解答,謝謝。
--
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考試
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