Question

Signals And Systems

5. Using the feedback analysis method, answer the following questions for each circuit:

a.Classify the feedback topology and the type of amplifier.

b. Draw the small-signal equivalent circuit used for calculating the open-loop gain,input resistance, and output resistance, i.e., break the feedback path and include the loading effects of the feedback network.

c. Write expressions for the circuit's reverse transmission factor, B, and open-loop gain, A.

d. Assuming that the circuit has sufficient loop gain, write the approximate expression for the amplifier's closed loop gain, As, and evaluate it.

e. Based on your answer to part d, approximate the feedback amplifier's voltage gain.


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