Timer circuit to turn OFF four devices.

Discussion in 'The Projects Forum' started by MrOz, Feb 24, 2010.

  1. MrOz

    Thread Starter New Member

    Feb 24, 2010

    I've not done any circuit work since high school which was about 20(ish) years ago.

    I've recently returned to further education and I'm not having a good time with the electronics side of things.... It's slowly coming back, and I do mean slowly - but I digress.

    On with the request for some assistance.

    I'm in need of a circuit that will be capable of turning off 4 devices. The first device should be switch off immediately and the remaining devices after a delay of approximately 60-120 seconds later.

    Can anyone shed some light on how I could do this?

    Thanks in advance.
  2. MikeML

    AAC Fanatic!

    Oct 2, 2009
    Do you mean turning off device 2 after 60sec, device 3 after 120sec, and device 4 after 180sec; i.e. progressively?

    Or do you mean turn off all three devices simultaneously 60sec after the first one?

    How much voltage (AC or DC) and current does each device require?
  3. MrOz

    Thread Starter New Member

    Feb 24, 2010
    Sorry - yeah progressively.

    Each device is using approximately 12v DC and 0.9 amp - according to the information I have. I can double check tomorrow at work.