1. Limited time only! Sign up for a free 30min personal 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!

Homework Help: Op amps

  1. Jan 4, 2009 #1
    1. The problem statement, all variables and given/known data
    An experiment to monitor the sound level in a room is to be conducted using a
    microphone.

    The microphone (output impedance = 1 kO) produces a maximum amplitude of 5 mV
    when connected to an oscilloscope (input impedance = 1 MO). If RI = 1 kO what
    amplitude will the input signal have when connected to the amplifier circuit and why?


    2. Relevant equations


    Gain = R2/R1
    3. The attempt at a solution
    I know the above equation an that input impedence should be high and output low
    any help appreciated thansk
     
  2. jcsd
  3. Jan 4, 2009 #2
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook




Loading...
Similar Threads for amps Date
Filtres and OPAMP Jan 31, 2018
OP AMP Circuit with diode Apr 11, 2013
Integrators - OP amps Mar 30, 2011
Design an op amp circuit Nov 14, 2010
Adding op-amp circuit Sep 30, 2010