Latching on help

Discussion in 'The Projects Forum' started by djvsmarkviii, Jan 15, 2009.

  1. djvsmarkviii

    Thread Starter New Member

    Dec 2, 2008
    1
    0
    I have a timing circuit that I need to start with a NO momentary switch connectedt to +5v and have that connection stay "on" until the circuit counts down to a preset time. At that moment the circuit sends a +5V signal out which I want to use to stop the circuit. Any ideas?
     
  2. KMoffett

    AAC Fanatic!

    Dec 19, 2007
    2,576
    231
    What is the time range you need? mSec? Seconds? Hours? Will you be changing the time?

    Ken
     
  3. mik3

    Senior Member

    Feb 4, 2008
    4,846
    63
    How is that time going to be measured? A circuit diagram with your idea would be helpful.
     
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