STUPIDSID
1 (a)
Explain block diagram of op-amp
5 M
1 (b)
Explain zero crossing detector
5 M
1 (c)
Explain significance of CMRR for a differential amplifier
5 M
1 (d)
Explain the basic principle of D to A converter
5 M
2 (a)
Explain internal block diagram of astable multivibrator using IC 555 and explain the one application of it.
10 M
2 (b)
For the differential amplifier find Ad, Ac, CMRR, Rin and Ro
10 M
3 (a)
Draw the transfer characteristics of an n-channel JFET with the help of Schockley's expression and explain its significance.
10 M
3 (b)
Desing a wide bandpass filter for FL=1KHz and passband gain equal to 4. Also find quality factor.
10 M
4 (a)
Draw the block diagram of an oscillator and expalin the Barkhausen conditions to obtain sustained oscilations.
10 M
4 (b)
Design a stable multivibrator using 555 for duty cycle 75% and output frequency 5 kHz
10 M
5 (a)
Explain the basic requirement for the instrumentation amplifier. Find the expression for output voltage using three op-amp.
10 M
5 (b)
Explain the non-inverting schmitt trigger and give the schmitt trigger advantages over the conventional comparators.
10 M
6 (a)
Design a voltage regulator using I2 723, Vo=5V, Io=50 mA, Isc=75 mA, vin=15V.
10 M
6 (b)
Design a R-C phase shift oscillator for output frequency 1 KHz.
10 M
7 (a)
Explain the averaging amplifier.
5 M
7 (b)
Explain three terminal voltage regularor
5 M
7 (c)
Explain dual slope ADC and state its advantages
5 M
7 (d)
Explain 555 as a voltage controlled oscillator.
5 M
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