engineering recuitment JSSC JE Mock Test 2023 Analog Electronics Power Amplifiers and 555 Timer and Voltage Regulators Power Amplifier
Consider the following circuits:
1. Oscillator
2. Emitter follower
3. Power amplifier
Which of the above circuits employ feedback?1
1 and 2 only
2
2 and 3 only
3
1 and 3 only
4
1, 2 and 3