I am installing a laptop into a car as the main computer, and I am trying to design a circuit that will automatically turn the laptop on. Turning the laptop off is not a problem, since when the power line loses power I have Windows set to hibernate in 15 minutes. I am assuming I need a circuit that will activate a relay for 1 second when the acc line goes from cold to hot. Anyone have any ideas how to do this?
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Auto Power-on Laptop