quetion based on amplifier

Discussion in 'Homework Help' started by santosh kumar chaubey, Jun 7, 2014.

  1. santosh kumar chaubey

    Thread Starter New Member

    Jun 7, 2014
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    0
    An amplifier has an input resistance of 20kΩ and output resistance of 15Ω. The open circuit gain of the amplifier is 25dB and it has a resistive load of 135Ω. The amplifier is supplied from an ac signal source of internal resistance of 5kΩ and r.m.s. amplitude 15dB above a reference level of 1µV.
    (a) Draw the equivalent circuit of this arrangement of source, amplifier and load.
    (b) Calculate:
    (i) the voltage at the input terminals to the amplifier
    (ii)the voltage across the load
    (iii) the power gain in dB
     
  2. Alec_t

    AAC Fanatic!

    Sep 17, 2013
    5,813
    1,105
    This is obviously Homework. We don't do your work for you, but can provide guidance.
    What are your thoughts so far?
     
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