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Interview questions on drain current constant/ volt. signal

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Aravind_tucson

Aravind_tucson

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Intvw qtns

Couple of qtns

1.There is process variations in the Threshold voltage of an NMOS transistor in a CS amplifier configuration. How to make the drain current constant without being affected by these variations..
Hint: He hinted to use feedback

2. There is a square wave input at one plate of a cap. wat is the voltage signal at the other plate..
 

Re: Intvw qtns

A2. Vin+Vc ,
where Vin is the input u mentioned, and Vc is the voltage existed in the cap. before Vin is applied.
 

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