audio signal fed to monostable trigger?

Discussion in 'General Electronics Chat' started by stonebleeds, Dec 4, 2012.

  1. stonebleeds

    Thread Starter New Member

    Dec 4, 2012
    I've been reading up on the Atari Punk Console that uses a pair of 555 timers. I was wondering what would happen if I just eliminated the first timer (the astable half) and fed an audio signal into the trigger line of the second monostable part and a speaker on the other end (the timer output)? Would it distort a voice or create some weird static or am I not understanding things well enough yet?
  2. Audioguru

    New Member

    Dec 20, 2007
    The output of the monostable is simply a DC pulse each time it is triggered. If it is triggered by a voice then it would just make some pops, clicks and other noises. Try it.

    A 555 is overloaded if it tries to drive a speaker that is less than about 35 ohms when it has a 9V supply.
  3. Dodgydave

    Distinguished Member

    Jun 22, 2012
    you need to draw the circuit out to see how to modify it.
  4. Audioguru

    New Member

    Dec 20, 2007
    The Atari Punk Console project is in Google and there is a video with sound of it playing.