1) What do you mean by a 555 timers? Write down the features of 555 timers? Describe in detail about the monostable mode.
2) Describe in about the Astable mode of operation using 555 timer.
3) Describe in detail the 723 IC general purpose voltage regulator.
4) Describe the operation of switching regulators in detail. Write down its advantages.
5) Describe the functional diagram of LM 380 power amplifier in detail.
6) Describe the operation of Astable multivibrator in detail.
7) Describe about the operation of Monostable multivibrator in detail.
8) Write down the needs for generating sustained oscillations in the feedback circuits? Describe any two audio frequency oscillators.
9) Write a detailed note on:
1. Isolation amplifier.
2. Video amplifier.
3. Audio power amplifier.