Analog Electronics — Summer 2022

Explain the basic principal of feed back

Compare various transistor amplifier configurations

What is transistor load line? Explain how to obtain it. Define Q- point on the load line.

Draw and explain OP-AMP as a zero-crossing detector. Give suitable example of its practical application.

Derive the equation for non-inverting amplifier using OP-AMP

Explain the working of a summing and averaging amplifier when connected in inverting mode

Derive the expression for the close loop gain, input resistance and output resistance of voltage shunt feedback amplifier

What are the merits & demerits of hybrid parameters?

List the important characteristics of the comparator.

Draw the circuit op-amp as differentiator and explain with necessary waveforms

Discuss any one application of PLL

Give comparison of: astable, monostable and bistable multivibrator.

What is an instrumentation amplifier? Explain with the help of neat diagram the operation of an instrumentation amplifier employing the three-basic op-amps and with provision for variation in the voltage gain.

Explain the ideal voltage transfer characteristics of Opamp

Draw basic block schematic of 78×× series three terminal voltage regulator ICs.

Sketch the diagram of 555 timers as an astable multivibrator having 50% duty cycle. Explain its working and derive equation for frequency of output waveform

Describe Sample and Hold circuit.

Explain Schmitt Trigger circuit.

Explain with circuit diagram the operation of a VCO.

Compare between active and passive filters.

Explain with the help of circuit diagram, the operation of second order Butterworth high pass filter.

Describe the basic building blocks of PLL.1

Explain the effect of negative feedback on frequency response of an op amp.

Describe how an Op-amp may be used as current to voltage converter

Define the following a) Pass band b) Stop band c) Attenuation d) Cut off frequency.