Timer relays
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=14049
Printed Date: June 09, 2024 at 3:26 PM
Topic: Timer relays
Posted By: jeffm
Subject: Timer relays
Date Posted: May 27, 2003 at 1:01 PM
There were some posts about these, but they are closed...
Are there ways to build timer relays instead of using the DEI ($) units? I thought a big capacitor might hold the coil for a few seconds, depending on what you need.
Or perhaps power the coil with a transitor/capacitor.
Or whip up a 555 timer.
I'm still learning electronics, hoping I can do this soon but was wondering if anyone else already has. Thanks!
Replies:
Posted By: xetmes
Date Posted: May 27, 2003 at 1:12 PM
do you want it to just stay on for a specific amount of time? You could use a 555 one shot setup, the most simple i have come up with uses a D Flip-Flop, transistor, cap, and some resistors, in theory it will work, but i gotta test it out.
Posted By: KBToys
Date Posted: May 27, 2003 at 2:08 PM
PAC makes a cool timer TR7 it works great.
Posted By: demeanor
Date Posted: July 02, 2003 at 9:28 PM
hey kbtoys....got a website?
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