Hi,

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.

 

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?

 

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.