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What is this guy doing with this circuits?

Discussion in 'General Electronics Discussion' started by cteejay, Mar 4, 2014.

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  1. cteejay


    Mar 4, 2014

    I'm new here and not very good with electronics.
    I really need help with figuring out what this guy
    is doing with those circuits in this picture.


    The circuit(s) you see in the picture is a square wave oscillator,
    but it seems he got 2 of them connected together somehow?

    What can you possible achieve by connecting 2 square wave
    oscillators together like that?

    This is the circuit you see in the picture if that helps:

    Tee Jay
  2. (*steve*)

    (*steve*) ¡sǝpodᴉʇuɐ ǝɥʇ ɹɐǝɥd Moderator

    Jan 21, 2010
    Have you considered asking him?
  3. jpanhalt


    Nov 12, 2013
    Not a lot to go on. One reason to couple two such oscillator circuits is to produce the pulse sequence needed for IR detectors such as the TSOP1738 (and a lot of others).

    In other words, one oscillator creates the "carrier" at 38 KHz; the other turns that carrier on and off at the needed intervals.

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