Question: Figure P1.56 shows a transconductance amplifier whose output is fed back to its input. Find the input resistance R of the resulting one-port network.

Figure P1.56 shows a transconductance amplifier whose output is fed back to

Figure PI.56 shows a transconductance amplifier wh

Figure P1.56 shows a transconductance amplifier whose output is fed back to its input. Find the input resistance R of the resulting one-port network. (Hint: Apply a test volt- age v between the two input terminals, and find the current i drawn from the source. Then, Rin = v/i.) ur. gmVi Ri Rin

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