Reg No.:

00000752071219 02000:
APJ ABDUL KALAM TECHNOLOGICAL UNIVERSITY

Third Semester B.Tech Degree (S,FE) Examination December 2020 (2015 Scheme)

Max. Marks: 100

i)

4
5 a)
b)
6 a)
b)
7 ஐ
b)
8

Course Code: CS207
Course Name: ELECTRONIC DEVICES AND CIRCUITS

PART A
Answer all questions, each carries 3 marks.

“A half wave rectifier is the simplest form of a clipper”. Elaborate.
Design a passive circuit to convert a 2 KHz sinusoidal input to a cosine
waveform.
Compare buck, boost and inverting types of DC to DC Converters.
Sketch and explain the working of a simple transistor shunt regulator.
PART B

Answer any two full questions, each carries 9 marks.

Draw and explain the circuit of a slicer for levels of -3V and -6V.

Draw and explain the block diagram of SMPS.
Sketch and explain a biased clamper circuit using a zener diode. The clamper
circuit shown below has a + 6 V, 200 Hz square wave input. Determine the tilt

in the output waveform.

Draw and explain the functional block diagram of IC 723.
Compare series and shunt voltage regulators
Draw the characteristics and explain the working of an n-channel JFET

PART C
Answer all questions, each carries 3 marks.
Compare common emitter, common base and common collector amplifier

configurations.

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Duration: 3 Hours

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