Making a Function Generator

Discussion in 'The Projects Forum' started by marco_26, Mar 1, 2013.

  1. marco_26

    Thread Starter New Member

    Feb 28, 2013
    7
    0
    Hi, I'm building a function generator using op amps. I'm following the attached schematic diagram. However, the frequency range is very small (307 -389Hz). Any ideas on how to increase it? Maybe up to 1kHz, if possible. Thanks.
     
  2. DickCappels

    Moderator

    Aug 21, 2008
    2,653
    632
    To get 3 times the frequency, reduce C1 to one third (0.33 uf). The amplitude of the signals at the output will be 1/3 the amplitude at 3xx Hz unless you also reduce the the three integrator capacitors by the same factor (1/3).
     
    marco_26 likes this.
  3. marco_26

    Thread Starter New Member

    Feb 28, 2013
    7
    0
    Thanks DickCappels!
     
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