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: Amplifier's gain

  1. Oct 28, 2012 #1
    An amplifier increases the peak-to-peak voltage of a signal from 1 V to 20 V. What is the amplifier's gain in dB?



    dB = 20 log10 (Vout/Vin)



    In this case dB = 20 log10 (20/1) I'm not sure :/
     
  2. jcsd
  3. Oct 28, 2012 #2
    Looks like you filled out the equation correctly - just have to 'plug-n-chug'. I get 26dB.
     
  4. Oct 28, 2012 #3
    yay thanks
     
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook