calculate the gain of these circuits a b and c assume that t

calculate the gain of these circuits- a, b and c. assume that the opamps are ideal

Solution

(a) in circuit the inner opamp is an inverting opamp

the gain of this inverting opamp is R_F/R_in

where R_F = 47kohms

R_in = 22kohms

gain=0.47

The remaining circuit is a Non inverting opamp

the gain= 1 + (R_F/R₂)

where R_F = 10kohms

R₂ = 1kohm

gain=11

the final gain of the total circuit is 0.47+11 = 11.47