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Sawtooth oscillator

Discussion in 'General Electronics Discussion' started by Thedarkb123, Dec 5, 2015.

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  1. Thedarkb123

    Thedarkb123

    29
    1
    Apr 15, 2014
  2. AnalogKid

    AnalogKid

    2,515
    718
    Jun 10, 2015
    That is not a saw wave generator. It is an integrator. With a DC level for an input it produces an inverted ramp. Positive input equals negative-going ramp, and vice-versa. Ignoring the control input for a moment, if you put it in series with a comparator in a loop, so the ramp output drives the comparator and the comparator output drives the ramp, you have the triangle and square wave parts of your instrument. Add some external logic to drive the control input and you have the saw wave part. Search for triangle wave oscillator and sawtooth wave oscillator for examples.

    http://circuit-diagram.hqew.net/Triangle-square-wave-oscillator_15962.html
    http://www.aaroncake.net/forum/topic.asp?TOPIC_ID=8498&whichpage=2
    http://www.piclist.com/images/www/hobby_elec/e_ckt16.htm

    ak
     
    Last edited: Dec 5, 2015
  3. Thedarkb123

    Thedarkb123

    29
    1
    Apr 15, 2014
    Thanks, I'll breadboard that as soon as I can :)
     
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