Frequency Subtractor

Discussion in 'General Electronics Chat' started by RCTV, Jan 22, 2013.

  1. RCTV

    Thread Starter New Member

    Jan 22, 2013
    1
    0
    Good day

    I have a question here, how can i subtract two frequencies from one another, namely pulse frequency without using a PIC or microcontroller

    Regards
    RCTV
     
  2. bertus

    Administrator

    Apr 5, 2008
    15,647
    2,346
    Hello,

    Have a look at a Double Balanced Mixer.
    On the output there will be the sum and the difference of the frequencies.
    A lowpass filter will give you the difference signal.

    This only works for sine wave signals.

    Bertus
     
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