I have a question about MOS C-V Characteristic.

[empkth]

Hello, All Outstanding electrical engineering student, I have a some question.

As posted,

1. At low frequency, the inversion electrons will be able to respond to the ac voltage
=> CG (ω= 0) = Cox (Why?).

2. At high frequency, inversion electrons are not able to respond to ac voltage
=> CG (ω=∞) = Cox Cs / (Cox + CS) =Cmin (Why?)

Please.. answer logical comments. I'm so curiosity because of these matters.

 

[phyzguy]

Sounds like a homework problem. According to PF rules, you need to make an attempt to solve the problem before we can help. Can you tell us your thoughts on the answers?