Question 18.5: In Fig. 18-22, R1 = 1 kΩ, R2 = 2 kΩ, R3 = 3 kΩ, R4 = 4 kΩ, R...

With the equations given in Fig. 18-22, the voltage gains are:

A_{V1}=\frac{-6 \ k\Omega }{ 1 \ kΩ }=-6

A_{V2}=\frac{-6 \ k\Omega }{ 2 \ kΩ }=-3

A_{V3}=\left(\frac{6 \ k\Omega }{ 1 \ kΩ\parallel 2 \ k\Omega }+1\right) \frac{4 \ k\Omega \parallel 5 \ k\Omega }{3 \ kΩ + 4 \ kΩ ∥ 5 \ kΩ}= 4.26

A_{V4}=\left(\frac{6 \ k\Omega }{ 1 \ kΩ\parallel 2 \ k\Omega }+1\right) \frac{3 \ k\Omega \parallel 5 \ k\Omega }{4 \ kΩ + 3 \ kΩ ∥ 5 \ kΩ}= 3.19