Need:Timer/Delay diagram

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Forum Name: General Discussion
Forum Discription: General Mobile Electronics Questions and Answers
URL: https://www.the12volt.com/installbay/forum_posts.asp?tid=18792
Printed Date: May 14, 2025 at 7:50 AM

Topic: Need:Timer/Delay diagram

Posted By: Fox4dr
Subject: Need:Timer/Delay diagram
Date Posted: September 11, 2003 at 11:24 AM

The temp in my car climbs about 20 degree's after shut down and I 'd like to set up a delay or timer to keep the electric fan running for about 2-3 minutes. I know this helps as I do this by turning it back on to run after shut down. This is not a factory deal,fan is controlled by an in the rad probe,switched by relay and obviously controlled by run 12v .

Thanks a heap

Bill

Replies:

Posted By: Rox0rz_Carz0rz
Date Posted: September 12, 2003 at 10:45 PM

probably the easiest would be to use a big-asses car-audio capacitor (perhaps a 2 ferad), just make sure you use a diode to keep it from discharging into any other system but ur fan.

Not sure if this'll accually work, just i theory that popped into my head as i'm sitting here deprived of sleep posted_image

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Posted By: xetmes
Date Posted: September 13, 2003 at 6:09 AM

i think it could easily be done with a transistor, capacitor, and some resistors... maybe if i get some time ill draw something up

Posted By: Rox0rz_Carz0rz
Date Posted: September 13, 2003 at 10:03 AM

that makes more sense, but i'm lazy. - lol

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