An amplifier of 60 db gain has an output resistance $R_o = 10K$. It i…
Previous year question for Electronic Circuits-I.
Question
An amplifier of 60 db gain has an output resistance $R_o = 10K$. It is required to modify its output impedance to $500\Omega$ by negative feedback. Calculate the value of the feedback factor. Also find the percentage change in the overall gain, for $10\%$ change in the gain of the internal amplifier. Draw a feedback amplifier in block diagram form and explain each block giving its function. What are the four topologies of the feedback amplifiers? Identify all the signals and transfer gains of each topology.
- Year: 2022
- Subject: Electronic Circuits-I