Syllabuses

Explain with the proper circuit diagram and current limiting with circuit diagram. Give its merits also.

Discuss the circuit arrangement for series voltage regulators and discuss its operation.

Draw the circuit of an Op-Amp integrator and explain an expression for the output. Or With the help of circuit diagram explain the working of 555 timer. Also discuss its applications.

Describe the operation of switch mode power supply with circuit diagram. Give its merits also. (ii) Common mode rejection ratio (CMRR): (i) Discuss fixed and adjustable switching regulators in detail.

Draw the circuit diagram explaining the working of stable multivibrator with waveforms.

How are power amplifiers classified? Explain Class A, Class B and Class AB amplifiers. Give an example for each class of power amplifier.

Explain with the help of a circuit diagram the operation of a crystal oscillator. Why are crystal oscillators give highly stable frequency? Mention applications for crystal oscillator.

Explain the Barkhausen criterion for the oscillation. How is it used in oscillators?

What is an Op-Amp? List all the ideal characteristics of Op-Amp and explain the following terms: (i) slew rate (ii) offset voltage (iii) input resistance (iv) bandwidth (v) bias current

Explain the working of transistor as an amplifier. What factors are considered for selecting operating point Q for an amplifier.