timed relay

Printed From: the12volt.com
Forum Name: Relays
Forum Discription: Relay Diagrams, SPDT Relays, SPST Relays, DPDT Relays, Latching Relays, etc.
URL: https://www.the12volt.com/installbay/forum_posts.asp?tid=9948
Printed Date: June 08, 2025 at 9:28 PM

Topic: timed relay

Posted By: geordie_racer
Subject: timed relay
Date Posted: February 23, 2003 at 1:30 PM

could some1 please tell me how 2 make a timed relay 2 do the following,

when i press a button i need a relay 2 energise a solenoid 4 5 seconds then deactivate it how do i go about doing this?

cheers chris

Replies:

Posted By: jrilla
Date Posted: February 23, 2003 at 6:31 PM

I am curious what purpose the solenoid is going to serve. I was thinking about doing the same thing for a carburated chevy. I havent quite convinced myself of the safest way to do this. This link will take you to the relays page, look at the first diagram, but you will need a larger cap to get 4.5 seconds. I think something like a 10K microfarat cap is close.

https://www.the12volt.com/relays/page5.asp

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J Rilla

Owner/Installer

Posted By: jrilla
Date Posted: February 23, 2003 at 6:33 PM

You might need to use the momentary to constant diagram and then the constant to momentary diagram if the button you wish to use as the trigger is only momentary.

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J Rilla

Owner/Installer

Posted By: geordie_racer
Date Posted: February 24, 2003 at 3:24 AM

i want 2 use the solenoid 2 open the door from inside so i can get rid of the ugly interior handle

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