Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Tone generator

  1. Jun 29, 2010 #1
    I am trying to design a tone generator similar to those used in telecommunications applications (ex: http://www.tessco.com/products/displayProductInfo.do?sku=89724&eventPage=1) The probe (inductive amplifier) can be used on any tone generator, so I plan to use it with mine.

    So far, I have thought of using a 555 timer as the oscillator (since it is also adjustable, see astable mode http://en.wikipedia.org/wiki/555_timer_IC). I am having trouble figuring out how to design a circuit that creates a constant tone (should be easy). This constant tone (a constant voltage) will be AND'd with the output of the 555 timer, to make a pulsing sound/on-off sound.

    Any tips on generating a constant tone? Thanks!!!
  2. jcsd
  3. Jul 1, 2010 #2
    You want to Google 'Sine Wave Generator" such as Wien Bridge.
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook