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
    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
    This is obviously Homework. We don't do your work for you, but can provide guidance.
    What are your thoughts so far?