simple audio (sine wave) oscillator

Discussion in 'The Projects Forum' started by ThyratronTube125, Mar 13, 2012.

  1. ThyratronTube125

    Thread Starter New Member

    Feb 7, 2012
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    Can someone provide an easy sine wave (audio) oscillator that doesn't need too many parts? (i.e. phase shift oscillator)

    Also, can a Colpitts/Armstrong/Clapp circuit be used to generate audio tones? (Those above mentioned are usually used with RF circuits).
     
  2. wayneh

    Expert

    Sep 9, 2010
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    Use the FreqGen app on your iPod. It'll give you sine, square or triangle waves over the full audio spectrum.

    Probably not what you were looking for, but you haven't explained why that wouldn't work.
     
  3. Obi_Kwiet

    New Member

    Apr 4, 2011
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    Are you looking for an IC?
     
  4. t06afre

    AAC Fanatic!

    May 11, 2009
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  5. DickCappels

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  6. crutschow

    Expert

    Mar 14, 2008
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    You could use an XR2206 function generator chip. It will generate sine, triangle, and square-waves. The sine-wave does have a small amount of distortion so it's not suitable for high quality audio distortion measurements, if that's what you need.
     
  7. ishaan3731

    Member

    Jun 23, 2011
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  8. Veracohr

    Well-Known Member

    Jan 3, 2011
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    If you just need a single frequency, try a Wien bridge oscillator:

    [​IMG]

    \frac {Rf}{Rg} = 3<br />
f= \frac 1{2 \pi RC}
     
  9. Audioguru

    New Member

    Dec 20, 2007
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    The circuit you posted is extremely simple. It has nothing to control its output level. Its output will rise until the opamp is badly clipping with lots of distortion.
     
  10. bountyhunter

    Well-Known Member

    Sep 7, 2009
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    Exar XR-2206. I built a benchtop signal generator using it.
     
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