16th Apr 2012, 11:26
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#1 |
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Multimodder
Join Date: Jan 2004
Location: Denmark (Helsingoer)
Posts: 139
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Help With Timed Relay
Hi guys. I’m 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. I’ve been trying with some capacitors and diodes, but can’t seem to get it right. Either way I’m stuck at the moment.
It's for 12V DC. All help is appreciated.
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16th Apr 2012, 11:40
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#2 |
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Packaging Master!
Join Date: Aug 2009
Location: Lusaka, Zambia
Posts: 2,998
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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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16th Apr 2012, 11:43
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#3 |
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Multimodder
Join Date: Jan 2004
Location: Denmark (Helsingoer)
Posts: 139
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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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EVGA nForce 680i SLI | Core 2 Extreme QX9650 12 MB 3.0 GHz @ 4.0 GHz | 4*1GB Corsair XMS2 Dominator PC2-10000 | Leadtek WinFast PX8800 GTX TDH | 4*WD Raptor X (600GB) Raid.0 |
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| Tags |
| diagram, pcb, relay, switch, time |
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