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Discussion :: Electronic Devices and Circuits

  1. An amplifier without feedback has a voltage gain of 50, input resistance of 1 kΩ and output resistance of 2.5 kΩ. The input resistance of the current shunt -ve feedback amplifier using the above amplifier with a feedback factor of 0.2 is

  2. A.
    1/11 kΩ
    B.
    1/5 kΩ
    C.
    5 kW
    D.
    11 kW

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    Answer : Option A

    Explanation :

    Input Resistance with feedback for current shunt, .


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