PYQs Based test 19: Analog Electronics

The diode used in the circuit has a fixed voltage drop of 0.6 V when forward biased. A signal vs is given to the ideal OpAmp as shown. When vs is at its positive peak, the output (vOA) of the OpAmp in volts is _______.

Two silicon diodes, with a forward voltage drop of 0.7 V, are used in the circuit shown in the figure. The range of input voltage 𝑉${}_{\text{i}}$ for which the output voltage 𝑉${}_{\text{o}}$ = 𝑉${}_{\text{i}}$, is

A cascade of two voltage amplifiers A₁ & A₂ is shown in the figure the open-loop gain $A_{v_0}$ , input resistance Rᵢₙ, and output resistance R₀ for A1 and A2 are as follows:

A₁: $A_{v_0}=10$, Rᵢₙ = 10 kΩ, R₀ = 1 kΩ

A₂ : $A_{v_0}=5$, Rᵢₙ = 5 kΩ, R₀ = 200 Ω



The transfer function Vₒᵤₜ/Vᵢₙ is:

An ideal OPAMP is used to realize a difference amplifier circuit given below having a gain of 10. If x = 0.025, the CMRR of the circuit in dB is _______.

In the circuit given below, the diodes D₁ and D₂ have a forward voltage drop of 0.6 V. The op-amp used is ideal. The magnitude of the negative peak value of the output V₀ in volt is______.