556 timer

Discussion in 'Homework Help' started by jmckain78, Aug 3, 2010.

  1. jmckain78

    Thread Starter New Member

    Mar 7, 2010
    3
    0
    How would I set up the dual 556 timer to produce a square wave at 1.2kHz and another square wave at 2.4kHz?


    Thanks,
    Jason
     
  2. JoeJester

    AAC Fanatic!

    Apr 26, 2005
    3,373
    1,159
    Download the 556 datasheet.

    Post your attempt at building the circuits.
     
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  3. Wendy

    Moderator

    Mar 24, 2008
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  4. Zaraphrax

    Active Member

    Mar 21, 2009
    47
    3
    For a square wave, you'll need to set it up as an astable. Check the data sheet for how to do this, and the necessary calculations you'll need to do to work out resistor and capacitor values. If you use a search engine, there are a few guides around that give you a starting point for capacitor values based on the frequency you want, then from that you can use the formulas to backtrack and find the two resistor values you'll need. It's quite simple really.
     
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