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Total Pages: 2
Reg No.: Name:

APJ ABDUL KALAM TECHNOLOGICAL UNIVERSITY
THIRD SEMESTER B.TECH DEGREE EXAMINATION, DECEMBER 2017

Course Code: CS207
Course Name: ELECTRONIC DEVICES AND CIRCUITS (CS)
Max. Marks: 100 Duration: 3 Hours
PART A
Answer all questions, each carries 3 marks. Marks
1 Design a clamper circuit to get the following transfer characteristics, assuming (3)
voltage drop across the diode s 0.7V.
1.
22.3|---->

12.3 2
ப

* 10 0 Vin
2 Draw the output waveform of the following circuit, assuming voltage drop across (3)
the diode is 0.7V.
11೧
AC
Voltage
20Vp-p
3 Compare linear regulator with switching regulator. (3)
4 Compare FET with BJT (3)
PART 8
Answer any two full questions, each carries 9 marks.
5 9) With neat sketches explain the principle and working of RC integrator circuit. (5)
b) Explain the response of an RC integrator circuit for a for a square wave input. (4)
6 a) With neat sketches explain the working of n-channel JFET. (5)
b) Draw the characteristics of n-channel 7 (4)
7 9) Draw and explain a circuit whose output voltage is three times as that of input (5)
voltage.
b) Discuss about simple zener shunt voltage regulator with the help of circuit (4)
diagram.
PART C
Answer all questions, each carries 3 marks.
8 Define stability factor. Write down the expression for stability factor S. (3)
9 Compare positive feedback with negative feedback. (3)

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