Need a simple on/off timer 12V 10A 1-60 sec

Discussion in 'The Projects Forum' started by coas, May 18, 2009.

  1. coas

    Thread Starter New Member

    May 18, 2009
    2
    0
    Hi,
    I'm looking for a simple countdown timer, adjustable from 1-60 sec, turn knob, power on set time with start switch, off when reaching zero.
     
  2. mik3

    Senior Member

    Feb 4, 2008
    4,846
    63
    If you don't need a high accuracy timing you can use a 555 monostable circuit with a pot to adjust the time intervals. Otherwise, you will need a digital timer with buttons to set the time.
     
  3. coas

    Thread Starter New Member

    May 18, 2009
    2
    0
    How not accurate will it be? And where can I get a digital timer as you mentioned?
    It will be used in a DIY fuel injectors test bench for measuring injectors flow volume in 20 sec. Injectors pulse is 2-6 ms.
     
  4. mik3

    Senior Member

    Feb 4, 2008
    4,846
    63
    You can buy a wall wart timer digital timer, like the ones used in the kitchen to turn off appliances after a time interval.
     
  5. foundit

    New Member

    Mar 9, 2008
    8
    0
    Hi,

    if you have 50Hz AC current try to use this old IC, SAB0529 from Germany
    you can find the datasheet on http://www.alldatasheet.com

    wish that helps

    best regards
     
Loading...