positive pulse on, positive pulse off

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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=86550
Printed Date: July 01, 2025 at 9:16 AM

Topic: positive pulse on, positive pulse off

Posted By: sic_fast
Subject: positive pulse on, positive pulse off
Date Posted: December 02, 2006 at 10:14 PM

Hello all, I have a switch well it's actually a button that I would like to relay so that when pressed (in & out + pulse) I will have constant 12V output, and then pulsed again, will turn it off. It's for a rear defogger on an after market jeep hardtop. It came with a toggle but I want to use the factory switch (button). I looked at the momentary to constant diagram but I'm not sure that's what I need since it uses a ground trigger.

Replies:

Posted By: sic_fast
Date Posted: December 04, 2006 at 2:32 PM

Okay so now I have the switch to pulse neg. and I followed the diagram (momentary to constant ) now it works but it won't shut off until I diconect it which is I guess how the caption explains it to work, but how do I get it to shut off ? When I power it up for the first time it turns on and illuminates the led but it won't turn off.

Posted By: hotwaterwizard
Date Posted: December 04, 2006 at 9:17 PM

A second Relay with a different Pulse.

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

Posted By: hotwaterwizard
Date Posted: December 04, 2006 at 9:27 PM

Try This.

posted_image

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

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