Keeping a relay on for X amount of time

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=46408
Printed Date: May 11, 2025 at 6:35 PM

Topic: Keeping a relay on for X amount of time

Posted By: blue82bu
Subject: Keeping a relay on for X amount of time
Date Posted: December 30, 2004 at 5:28 PM

New guy here with a Q. I 've been a long time looker of the forums and this is my first post:

I need info and possibly a diagram showing how to keep a 12v relay latched for apox. 2 mins. Any help is appreciated

Replies:

Posted By: theronsmith
Date Posted: December 30, 2004 at 6:44 PM

You can buy a timer form DEI

-------------
chevy II

Posted By: blue82bu
Date Posted: December 30, 2004 at 8:27 PM

Does DEI have a www? I couldn't find anything on google.

Posted By: MHARVEY
Date Posted: December 30, 2004 at 8:45 PM

try pacaudio i have the tr-7 relay timer

www.pac-audio.com

Posted By: gcorrea
Date Posted: January 02, 2005 at 1:26 AM

i just saw a dei timer on ebay for about $10.00, look for it in the security section.

-------------
gcorrea

Posted By: Captanham
Date Posted: January 02, 2005 at 11:15 AM

the the dei pulse timer is cheap and it will do it, pretty easy hook up, i don't rember the 55 wahtever number, i can ship you one if you want, and dei's site is directed.com, you could also do this with an aditional relay, a small resistor and a capacitor... but it's prolly a lot easier to just use the pulse timer

-------------
Bad Boys Customs
audio - video - security

If you use it. Suport it. Donate to the 12 volt!

Posted By: hotwaterwizard
Date Posted: January 02, 2005 at 11:03 PM

How about this?

-------------
John DeRosa (Hotwaterwizard)
Stockton California
When in doubt, try it out !

Posted By: blue82bu
Date Posted: January 04, 2005 at 12:50 PM

thank you hotwaterwizard one of those should work perfectly.

Posted By: hotwaterwizard
Date Posted: January 04, 2005 at 9:45 PM

When you push the Button, the timer begins.

If you push it again it resets the time limit.

I use this with a pressure switch on a pressure washer and it lets them wash the trucks as long as they are using the machine.

If they let off of the trigger for 3 min. the machine shuts off automaticly.

If you want a shorter time you can try a smaller capacitor or put a 50k varible resistor in place of the 33k.

-------------
John DeRosa (Hotwaterwizard)
Stockton California
When in doubt, try it out !