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Help With 180 Degree Phase Shift

  1. Nov 30, 2011 #1
    I want to take an audio signal, and shift the waveform 180 degrees. How would I do this? I have read that if you take a simple class a amplifier, and feed the signal into the base of the NPN transistor, you will get an output that is shifted 180 degress. Example:
    amp21.gif

    Will this work?
     
  2. jcsd
  3. Nov 30, 2011 #2

    Bobbywhy

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    Schmoopsiepoo, Welcome to Physics Forums!

    The Example you posted has a red "X" inside it and does not work. But you are correct about a class "A" amplifier: its output is 180 degrees out of phase with the input.
     
  4. Nov 30, 2011 #3

    dlgoff

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