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Old 16th Apr 2012, 12:26   #1
BagUd
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Help With Timed Relay

Hi guys. Iím trying to design a circuit that will activate a relay for 1-2 seconds. The relay must first be activated when I release the button not when I push the button. Iíve been trying with some capacitors and diodes, but canít seem to get it right. Either way Iím stuck at the moment.

It's for 12V DC.

All help is appreciated.
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Old 16th Apr 2012, 12:40   #2
Nealieboyee
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I would use a logic circuit with gates or a latch or some sort, which then feeds a 555 timer circuit.

Trying to find something....
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Old 16th Apr 2012, 12:43   #3
BagUd
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I've thoght about a 555 timer chip. but it's over 10 years since i played with electronics.
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