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
    2
    0
    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
    14,803
    5,288
    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
    7
    0
    Are you looking for an IC?
     
  4. t06afre

    AAC Fanatic!

    May 11, 2009
    5,939
    1,227
  5. DickCappels

    Moderator

    Aug 21, 2008
    4,932
    1,500
  6. crutschow

    Expert

    Mar 14, 2008
    19,830
    5,547
    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
    43
    1
  8. Veracohr

    Well-Known Member

    Jan 3, 2011
    654
    100
    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

    Expert

    Dec 20, 2007
    10,513
    1,169
    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
    2,498
    510
    Exar XR-2206. I built a benchtop signal generator using it.
     
Loading...