What are the properties of feedback amplifiers? Mathematically show t…
Previous year question for Electronic Circuits-I.
Question
What are the properties of feedback amplifiers? Mathematically show the effect of feedback on the following topologies:
i. Voltage - shunt
ii. Current - series
iii. Voltage series
The effect need to be analysed on input resistance only. An amplifier with open loop voltage gain of $1000 \pm 100$ is available. However, we desired to build an amplifier whose gain does not vary by more than $0.1\%$. Find the required feedback ratio '$\beta$' and the corresponding closed loop voltage gain.
- Year: 2022
- Subject: Electronic Circuits-I