555 pulse width modulation

Discussion in 'The Projects Forum' started by kaivalya, Aug 25, 2008.

  1. kaivalya

    Thread Starter New Member

    Aug 25, 2008

    I would like to know if it is possible to modulate the output pulse width of this circuit without drastically modifying it. Ideally I want the frequency to be controlled by the 10k pot and the pulse width to be controlled by a pot connected to pin5. Would that work or would the pot on pin5 affect the overall frequency of the circuit ? :confused:
  2. mik3

    Senior Member

    Feb 4, 2008
    No, this circuit wont work.

    Search in google for '555 tutorial' to learn more about it and also search for 'PWD with 555' to see some circuits.