50khz oscillator

Discussion in 'The Projects Forum' started by scanpatton, Jan 13, 2009.

  1. scanpatton

    Thread Starter New Member

    Jan 13, 2009
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    Hi all....
    I need to build an oscillator using descrete
    components for a project im doing..
    i would like to keep it as simple as possible.
    only thing it must have a fixed 50KHz output. would anybody out there have any
    ideas or circuit diagrams that might be helpfull..
    I would really appreciate any help or input with this...
     
  2. Wendy

    Moderator

    Mar 24, 2008
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  3. SgtWookie

    Expert

    Jul 17, 2007
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    What kind of output from the oscillator? Sine wave? Square wave?
     
  4. kahafeez

    Active Member

    Dec 2, 2008
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    which shape do u need ???? this is a figure of a sine wave oscillator...... this configuration is very popular and called Wein Bridge oscillator.....
     
  5. scanpatton

    Thread Starter New Member

    Jan 13, 2009
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    0
    hi thanks for the quick replys.. the only thing it has to be as simple as possible.. thats kinda the thing..i need a sq wave output for the next stage.. ive looked at a few designs colpitts hartley oscillator etc but it the values for the components to give 50hhz out which im finding hard
     
  6. Wendy

    Moderator

    Mar 24, 2008
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    Colpitts and Hartley are both sine wave oscillators, not simple. The 555 I referenced is as simple as it gets, but not a 50% square wave. The addition of a resistor will fix that.

    What are you driving?
     
  7. DickCappels

    Moderator

    Aug 21, 2008
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    7414, one resistor for feedback, one capacitor from input to ground... you have 5 Schmitt triggers left over for other functions.
     
  8. Skeebopstop

    Active Member

    Jan 9, 2009
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    Would be fun to steal ripple off a SMPS input operating at 50kHz and create a resonant circuit around it.

    Ok well.... maybe not that fun.
     
  9. bertus

    Administrator

    Apr 5, 2008
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