engineering recuitment HAL Management & Design Trainee Mock Test 2023 Analog Electronics Oscillators and Feedback Amplifier Feedback Amplifier
The expression for voltage gain Av of a positive feedback amplifier is
1
\(\frac{1}{1 - \beta}\)
2
\(\frac{A}{1 - \beta A}\)
3
\(\frac{A}{1 - A}\)
4
None of these