does this exist?

Printed From: the12volt.com
Forum Name: Car Security and Convenience
Forum Discription: Car Alarms, Keyless Entries, Remote Starters, Immobilizer Bypasses, Sensors, Door Locks, Window Modules, Heated Mirrors, Heated Seats, etc.
URL: https://www.the12volt.com/installbay/forum_posts.asp?tid=51674
Printed Date: May 12, 2024 at 4:33 AM

Topic: does this exist?

Posted By: rsudbay
Subject: does this exist?
Date Posted: March 10, 2005 at 10:55 AM

im kinda new to this industry, so im not sure. is there a kind of relay that when you give it a pulse(+or-) it turns something on and keeps it on. untill it gets the same (+or-) pulse agian and it turns it off. thanks for the help

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hey, everyone has got to start somewhere. but ill learn

Replies:

Posted By: auex
Date Posted: March 10, 2005 at 11:22 AM

Latching relay on/off with a single pulse.

posted_image

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Certified Security Specialist
Always check info with a digital multimeter.
I promise to be good.
Tell Darwin I sent you.

I've been sick lately, sorry I won't be on much.

Posted By: OmarR
Date Posted: March 10, 2005 at 6:18 PM

And if you just want to buy something, then you are looking for DEI 611T. It's a latching relay.

Posted By: Ravendarat
Date Posted: March 10, 2005 at 9:05 PM

So Auex, are those just standard relays your using there, cause I have never seen that done before, I always thought you have to have a specific latching relay. If that is actually just normal relays then does it need one pulse to activate then the opposite to disengage or is it just always the same pusle. IE + to latch and - to unlatch or is it + to latch and + to disengage

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double-secret reverse-osmosis speaker-cone-induced high-level interference distortion, Its a killer

Posted By: auex
Date Posted: March 10, 2005 at 9:33 PM

It is the diagram from this site. Yes they are just spdt standard relays. This diagram requires a single negative pulse to activate and a second negative pulse to deactivate. There is another diagram for doing this with out diodes but requires another relay. The relay second from the left is the relay that latches. All it does is activate a relay to send an output out and ties it into the same pin that activates the relay causing the relay to latch and stay active, you need another relay to cut the power to the other side of the coil. You can use the basic setup and use 2 switches and 2 relays to do a simple latching setup.

posted_image

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Certified Security Specialist
Always check info with a digital multimeter.
I promise to be good.
Tell Darwin I sent you.

I've been sick lately, sorry I won't be on much.

Posted By: Ravendarat
Date Posted: March 10, 2005 at 11:59 PM

Thats awsome, now I have something to do at work tomorrow. (gettin a little slow at the old FS :) )

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double-secret reverse-osmosis speaker-cone-induced high-level interference distortion, Its a killer

Posted By: IrishDoc
Date Posted: March 11, 2005 at 7:51 AM

Auex: i have a friend who wants to add a window module that he has already bought but he doesnt have a timed (-) output on his alarm. he however does a (-) pulse trigger for trunk release that he doesnt use (the window module uses a - trigger). Can i use the above 5 relay diagram and then convert the output using another relay and get the result i am looking for? Also would using the relays still allow the alarm to close the windows when armed or is that a feature he will have to do without?

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Just A Hobby Installer

Posted By: kgerry
Date Posted: March 11, 2005 at 9:42 AM

of course the cost to just buy the DEI 528 or 611 modules is probably cheaper than 5 relays and sockets... and a heck of a lot cleaner install..... not to mention the fact that the 611T is far more versatile....

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Kevin Gerry
Certified Electronics Technician
MECP First Class Installer

Owner/Installer
Classic Car Audio
since 1979

Posted By: auex
Date Posted: March 11, 2005 at 12:11 PM

What is cost of DEI's pieces?

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Certified Security Specialist
Always check info with a digital multimeter.
I promise to be good.
Tell Darwin I sent you.

I've been sick lately, sorry I won't be on much.

Posted By: NowYaKnow
Date Posted: March 11, 2005 at 10:04 PM

Looks to be about $15 around the net.. No idea what retail is maybe $30? Definately beats wiring up 4 - 5 relays unless your bored..

Mike