light on timer

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bousdula

Member - Posts: 6

Joined: June 03, 2003

Posted: June 05, 2003 at 12:13 AM / IP Logged

I am installing a Push Button Starter, and want the light in the button ( has it's own + & - connection ) to turn on for about 15 seconds when I put the ignition in the start postion. But if the car is started before the 15 seconds, I want the light to turn off.

thanks

auex

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Joined: December 23, 2002

Location: Arizona, United States

Posted: June 06, 2003 at 6:16 PM / IP Logged

You could use a pulse timer for this application, or you could test with a relay and some caps.

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bousdula

Member - Posts: 6

Joined: June 03, 2003

Posted: June 08, 2003 at 8:13 PM / IP Logged

umm, I'm not that advanced with electrical set ups. Could you explain in more detail.

xetmes

Silver - Posts: 586

Joined: May 18, 2003

Posted: June 08, 2003 at 8:40 PM / IP Logged

you could base it around this:

light on timer -- posted image.

bousdula

Member - Posts: 6

Joined: June 03, 2003

Posted: June 09, 2003 at 12:22 AM / IP Logged

that looks cool, about how long would the "momentary 12v output" be on?

xetmes

Silver - Posts: 586

Joined: May 18, 2003

Posted: June 09, 2003 at 6:37 AM / IP Logged

The author says about 1/2 a second, hmmm i guess thats not too close to 15 lol... you could increase the cap value for a longer on time, but it might be a bit too large to get the desired effect. If you want i will do it using a 555 timer, then you can adjust from 1 second to 30 seconds what you want.. let me know.

bousdula

Member - Posts: 6

Joined: June 03, 2003

Posted: June 09, 2003 at 9:43 AM / IP Logged

I don't know what a 555 timer is, but up to 30 seconds would be better than 1/2 a second. If you could explain it that way, I would appreciate it.

xetmes

Silver - Posts: 586

Joined: May 18, 2003

Posted: June 09, 2003 at 8:07 PM / IP Logged

here is what i came up with, by adjusting the pot you can have between 0 seconds and 111 seconds.

light on timer -- posted image.

bousdula

Member - Posts: 6

Joined: June 03, 2003

Posted: June 10, 2003 at 6:46 PM / IP Logged

nice diagram. Thanks for all the help

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light on timer

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