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What are the small signal FET parameters?

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What are the small signal FET parameters?

(a) gm and rds

(b) gm and Vgs

(c) Vds and rds

(d) gm

This question was addressed to me by my college director while I was bunking the class.

Enquiry is from JFET Amplifier topic in chapter FET Amplifiers of Analog Circuits

1 Answer

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The correct option is (a) gm and rds

Explanation: The small signal model of FET- MOSFET and JFET is obtained from the following equation IDS = gmVgs + Vds/rds

gm and rds are the small signal FET parameters.

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