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E B3E037 Pages:3

Reg. No. Name:

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

Course Code: CS207
Course Name: ELECTRONIC DEVICES AND CIRCUITS (CS)

Max. Marks 100 Duration: 3Hours

PARTA
(Answer ANY THREE questions)
1. Assuming voltage drop across the diode as 0.6V, design a diode shunt clipper with

transfer characteristics as shown in the following diagram.

(4)

‎sketch the output waveform and voltage‏ ,' و

‎रि.
‎(4)
‎3. Compare the properties of FET over BJT. (4)
4. Explain the functional diagram of LM723. (4)

‎PART 8
(Answer ANY TWO questions)
5. With neat sketches explain the construction, principle of operation, and characteristics of
an n-channel enhancement MOSFET. (9)
6. (i)What are the necessary conditions for an RC circuit to be a differentiator? (2)

‎(ii)Explain the working of an RC differentiator circuit for a square wave input with period

‎T.Sketchits output waveform for RC > T ,RC >> T and RC = T. (7)

‎7. (i) Explain the working of a simple series voltage regulator using transistor. (5)

‎(ii)Discuss about simple sweep circuit using transistor. (4)
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