1.

The input impedance is ______ for the amplifier in the given circuit. The data sheet values are Zin = 3 M, Zout = 80 , and Aol = 250,000.

A. 4.7 k
B. 22.7 k
C. 3 M
D. 68.6 k
Answer» B. 22.7 k


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