Need some help

Discussion in 'General Electronics Chat' started by MikeL, Aug 14, 2009.

  1. MikeL

    Thread Starter New Member

    Aug 12, 2008
    9
    0
    Hello everyone,
    Wasn't sure if this was the right section to post this in, so please move it if need be,

    I'm attempting to build a Bubba Oscillator for a lighting project, however, its been quite a long time since I've done Op-Amp / Oscillator calculations, and well, I can't remember squat, lol.

    http://freecircuitdiagram.com/2009/07/15/bubba-oscillator/

    that is the circuit itself, however I am shooting for an output of about .25Hz if at all possible.

    If someone could help walk me through what i need to know to recalculate the values of the components (not even sure where to start) so i can achieve this goal, I would be most appreciative.

    Thanks again.

    M.L.
     
  2. bertus

    Administrator

    Apr 5, 2008
    15,638
    2,343
    Hello,

    Here is a PDF with design notes for opamp sine wave oscillators.
    The bubba oscillator is at the last page.

    Greetings,
    Bertus
     
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