variable 1-20Mhz clock, possible??

Discussion in 'General Electronics Chat' started by raffter, Jun 6, 2008.

  1. raffter

    Thread Starter Active Member

    Feb 28, 2008
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    hi guys,

    is it possible ?
     
  2. bertus

    Administrator

    Apr 5, 2008
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  3. Wendy

    Moderator

    Mar 24, 2008
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    What kind of accuracy are you looking for. Basically you are describing a frequency synthisizer, HP makes a wide range, as do other companies. How would you want to control it (assuming something on board), digitally?
     
  4. raffter

    Thread Starter Active Member

    Feb 28, 2008
    113
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    well, I was thinking of a CMOS clock(using maybe schmitt trigger eg74HC14 or similar)... with minimal frequency drift.. using a pot to control freq....will use it to clock a PIC..

    schmitt osc ->>buffer(another unused gate)-->>PIC ext clock input



    Ralph
     
  5. John Luciani

    Active Member

    Apr 3, 2007
    477
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    You could probably make the clock generator using a PIC ;-)

    Check out the specs on the counter timer.

    (* jcl *)
     
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