STUPIDSID
Solve the following:
1 (a)
Design a circuit to keep LED 'ON' for 30 seconds once circuit is triggered.
4 M
1 (b)
What is CMRR for op-amp and how to measure it practically?
4 M
1 (c)
Explain first order active filter circuit.
4 M
1 (d)
Design a 0.5A current source using IC7805. Assume RL=100.
10 M
1 (e)
Explain 7490 Decade counter.
10 M
2 (a)
Design triangular waveform generator for frequency for 85KHz and Vopp=6V using op-amp.
10 M
2 (b)
Explain IC 741 based RC phase shift oscillator with proper waveforms. Design RC Phase shift oscillator to produce sinusoidal frequency output of 5 Khz.
10 M
3 (a)
Design a high pass second order filter for the cut off frequency of 1 Khz and passband gain AF=2.
10 M
3 (b)
Write the advantages of precision rectifier. Explain half wave precision rectifier along with neat waveforms.
10 M
4 (a)
Design a voltage regulator using IC 723 to give V0=5V and output current of 2A.
10 M
4 (b)
Draw instrumentation amplifier using opamp and hence derive equation for output voltage.
6 M
4 (c)
Explain zero crossing detector with neat diagram.
4 M
5 (a)
Draw and explain the functional diagram of IC 555 and explain its operation in astable mode.
10 M
5 (b)
With the help of neat circuit diagram explain the working of 74163 synchronous 4-bit binary counter. Also illustrate the cascading connections for 74163 based counters.
10 M
Write short notes on the following:
6 (a)
74181 Arithmetic Logic Unit.
5 M
6 (b)
Current foldback protection.
5 M
6 (c)
Any two applications of PLL 565.
5 M
6 (d)
Voltage to frequency converter.
5 M
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