B4C071

OR

. a. Explain in detail the working of Schmitt trigger and explain the transfer

characteristics.

b. Design a first order low pass filter with a cut off frequency of 2kHz.

PART €^

Question No.7 is compulsory. Answer question 8 or 9.

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. Discuss in detail any two applications of PLL.

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. Write a short note on IC723 based voltage regulators

c. Explain the working of dual slope A/D converters.

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b. Discuss different methods for implementing analog multipliers.

c. Explain the working of high speed sample and hold switch.

OR

. a. Derive the output voltage for a 4 bit R-2R ladder D/A converters

b. Explain the working of successive approximation type A/D converters.

33%

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. Explain in detail the working of monostable and astable multivibrator using 555.

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