1. Not finding help here? Sign up for a free 30min tutor trial with Chegg Tutors
    Dismiss Notice
Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

How to calculate gain in a circuit

  1. Sep 17, 2012 #1
    http://imgur.com/K5nPY

    a) Determine the voltage gain of the amplifier, Vout / Vin, in terms of the parameters in the given circuit.

    b) Determine the overall voltage gain between the source and the output, Vout / Vsourse, in terms of the parameters in the given circuit.

    Attempt at Solution:

    I attempted condensing the resistors.
    (Ro * Rl) / (Ro + Rl) becomes the new resistor on the right side.
    [ (Rb * Rin) / (Rb + Rin) ] + Rs becomes the new resistor on the left side.

    After this I am lost. Can anyone help me out here?
     
  2. jcsd
  3. Sep 17, 2012 #2

    gneill

    User Avatar

    Staff: Mentor

    Hi DreamSanchez, Welcome to Physics Forums.

    For part (a), since you are to assume that Vin is a given, then surely you can find an expression for Vout? Looks like a simple voltage divider to me...

    For part (b) you do essentially the same thing, only here you need to find Vin first given that Vsource is known.
     
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook




Similar Discussions: How to calculate gain in a circuit
Loading...