Define PSRR, Slew Rate, and Output Offset voltage.
[3 marks]Draw the schematic diagram of the OP-AMP and its equivalent circuit.
[4 marks]Sketch the circuit of Phase-shift Oscillator using BJT and obtain its frequency of oscillation.
[7 marks]Write short note on validity of hybrid-π model.
[3 marks]List the parameter those affecting to the transistor at high frequencies.
[4 marks]Derive the expression for the CE short-circuit current gain Aas a i function of frequency.
[7 marks]Explain in detail the working principle of a crystal oscillator.
[7 marks]What is feedback in amplifiers? Compare and contrast the effects of negative and positive feedback on amplifier performance.
[3 marks]With g 50 mA/V, r = 1 K, C = 1 pF and C = 0.2 pF, determine m = b’e e c the values of f and f . β T
[4 marks]List and explain characteristics of amplifier which are modified by negative feedback.
[7 marks]The nominal gain (A) of an amplifier with feedback is 20, and a f variation of 5% is permissible. If the magnitude of the return ratio (Aβ) is 1000, then determine the minimum value of the open loop gain (A) and the maximum permissible variation in it.
[3 marks]Draw the four types of feedback amplifier topologies.
[4 marks]Draw and explain triangular wave generator using OP-AMP
[7 marks]What do you mean by Voltage regulator? List different types of voltage regulators.
[3 marks]Sketch the OP-AMP based sample-and-hold circuit and explain its operation.1
[4 marks]Sketch and explain the operation of an A-stable multivibrator based on a 555 timer?
[7 marks]Briefly explain class Apower amplifier.
[3 marks]Draw block diagram of Phase Locked Loop (PLL) and briefly explain its working.
[4 marks]Write a short-note on class-Bpush-pull power amplifier
[7 marks]Explain the difference between a band-stop filter and a band-pass filter.
[3 marks]With respect to filters define followings (i) Pass Band (ii) Stop Band (iii) Attenuation (iv) Cut-off frequency.
[4 marks]Write a short-note on Transformer Coupled Audio Power Amplifier
[7 marks]555 based A-stable multivibrator is constructed using the following components: C = 0.01 µF, R = 10KΩ, R = 50KΩ.12 Calculate the output frequency from the 555 oscillator and the duty cycle of the output waveform.
[3 marks]How do active filters differ from passive filters? Briefly explain
[4 marks]Explain in detail Sallen-Key second-order low-pass filter.
[7 marks]