In the generalized operational amplifier circuit shown in figure, Z₁, Z₂ and Z₃ are impedances. The operational amplifier has an input impedance greater than 10 M? and a gain equal to up to 100 Hz but inversely proportional to frequency at higher frequencies.

(a) It Z₁ = 1 k? and Z₂ = 100 k?, draw a graph to show how the voltage ratio V₂/V₁ varies with frequency.

(b) If Z₁ = 1 k? and Z₂ consists of a parallel combination of a resistor R₂ = 10 k? and a capacitor C = I ?F, draw a graph to show how V₂/V_1?varies with frequency.

Transcribed Image Text:

Z, V2