Can anyone help me with a time-delay circuit?

Bikie · 07-24-2009, 04:58 AM

Hi all, was wondering if anyone can help me with a time-delay circuit, at least I think that is what I need.
I want to be able to power my Asus eeepc from a cig lighter adapter, from the ignition key (which is what I have already done at the moment)
but I want to be able to momentarily cut the power for about 10-15-secs when I turn the ignition off, so that after 10-15secs the power is restored to the eeepc. Any ideas welcome.

Andrew

Crinos · 07-24-2009, 05:48 AM

Instead of telling you, what I just read another place...
http://www.electronics-project-desig...aycircuit.html

This one is even adjustable, so you can adjust it up to 75 seconds.

Or do it simple.. buy a finished product.
http://www.circuit-innovations.co.uk/555timer.html
From 1 to 110 seconds

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