Find $A_V, R_i$and, $R_O$ for following circuit.

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written 8.7 years ago by

abgharge • 260

modified 3.8 years ago by

pedsangini276 • 4.8k

enter image description here

Mumbai University > Electronics Engineering > Sem 4 > Discrete Electronic Circuits

Marks: 10M

Year: Dec 2015

discrete electronics

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written 8.7 years ago by

abgharge • 260

AC equivalent circuit:

enter image description here

$R_i (Input Resistance):$

$R_i = R_1 || R_2$

$R_i = 2.2M || 1M $

$R_i = 0.6875M\Omega$

$R_O (Output Resistance):$

$R_O = R_D || r_d$

since, $r_d$ is not given $R_O = R_D$

$R_O = 2.2K$

$R_O = 2.2K\Omega$

$A_V(Voltage Gain):$

$A_V = - gm (R_D || …

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