A question that is about source follower and body effect!

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davison7

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Hi, every body,

I have a question that is about the source follower (common-drain amplifier) and body effect. Why does increasing the output bias level can reduce the percentage of source to bulk voltage due to the signal?

Could everybody explain the reason?
 

Re: A question that is about source follower and body effect

I have solved the question. While increasing the ouput DC level, the Vbs is also increasing. Therefore, the gmb will reduce due to the increasing Vbs.
 

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