The feedback current amplifier in Fig. P10.26 utilizes an
Chapter 10, Problem 10.26(choose chapter or problem)
The feedback current amplifier in Fig. P10.26 utilizes an op amp with an input differential resistance , an open-loop gain , and an output resistance The output current that is delivered to the load resistance is sensed by the feedback network composed of the two resistances and , and a fraction is fed back to the amplifier input node. Find expressions for assuming that the feedback causes the voltage at the input node to be near ground. If the loop gain is large, what does the closed-loop current gain become? State precisely the condition under which this is obtained. For V/V, , , k , , and k , find A, , and .
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