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square wave inverter and cfl buzz

Discussion in 'Hobby Electronics' started by lentildude, Nov 1, 2009.

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  1. lentildude

    lentildude Guest

    I am running a cfl off a 300w 12v inverter in a solar offgrid situation.
    The 300w inverter is a not true sinewave but a square wave type.

    Everything works well, nothing gets too hot but I get annoying buzz sound.
    I have tried a few different CFLs still the same buzz.

    Is there a way to filter out bad harmonics without wasting power or
    sacrificing efficiency?
  2. Franc Zabkar

    Franc Zabkar Guest

    If it helps, here are a few CFL circuits:

    - Franc Zabkar
  3. Mickel

    Mickel Guest
    An option is purchase 12V CFLs. I found these to be good but the rating of
    30W is not true, closer to 20W in my experience. Still eqivelant to a 100W
    bulb in the old money.

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