Explain Barkhausen criterion for oscillation.
[3 marks]Explain internal block diagram of OP-AMP
[4 marks]Explain the basic differentiator using an op-amp. What are the problems associated with this configuration? How they are overcome?
[7 marks]Explain working of 555 timer based A-stable multivibrator.
[7 marks]Explain operation of PLL with basic blocks and mention any four applications of it in radio communication.
[3 marks]Explain the working of a Square wave generator using op-amp
[4 marks]Explain the concept of Vto Iconverter with floating load.
[3 marks]Explain inverting and non inverting amplifier using op-amp
[4 marks]Analyze second order butterworth low Pass filter. Draw its frequency response and state design procedure.
[7 marks]Explain the concept of virtual ground in op-amp.
[3 marks]Explain absolute wave circuit.
[4 marks]What is need of clipper circuit? Explain op-amp as a positive and negative clipper along with necessary waveforms.
[7 marks]What is Voltage limiter circuit?
[3 marks]Explain summing, scaling and averaging amplifier.
[4 marks]Draw op-amp based wein bridge oscillator. Obtain frequency of oscillation and discuss amplitude stabilization for same.
[7 marks]Explain peak detector circuit
[3 marks]Explain differential amplifier using two op-amps
[4 marks]Draw the hybrid Π common emitter transistor model. Also derive the expression for transistor trans-conductance.
[7 marks]Discuss fixed and adjustable voltage regulator with necessary circuit diagrams.
[3 marks]Explain the magnitude and phase response of low pass function of biquad circuit.
[4 marks]Derive the high frequency trance conductance equation for g for CE m amplifier.
[7 marks]State the relation between hybrid-Π and h-parameters.
[3 marks]Design RC phase oscillator for the frequency of 2 KHz.
[4 marks]Derive high frequency current gain for CE amplifier with R . S
[7 marks]