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=57597
Printed Date: April 25, 2024 at 1:52 AM

Topic: timed relay

Posted By: TAME ITI
Subject: timed relay
Date Posted: June 13, 2005 at 7:19 AM

Hi .I need a relay circuit to energize the relay 10 seconds after the power is connected .
I need it for a paging system to be connected to the sirens output ,so when the alarms sounds ..10 seconds later it will become active via relay .As, if I dont have the timed circuit it will page when the car is armed and disarmed every time .
Many thanks to those who can help
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Replies:

Posted By: soundmasta
Date Posted: June 13, 2005 at 8:23 AM

dei makes a timer module you can use to control your relay. a 528t i think.

Posted By: Theshadow27
Date Posted: June 15, 2005 at 12:05 PM

The capacitor allows the coil of the relay to be energized until the capacitor stores a charge, thus de-energizing the coil. The resistor bleeds off the charge of the capacitor when positive voltage is removed from the other side of the coil. You can increase the output time by simply changing the value of the capacitor. This one will give you about a 1/2 second output.
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Posted By: 704acc
Date Posted: June 15, 2005 at 7:32 PM

I think that is the opposite of what Tame Iti is looking for. Try www.amperite.com and look at the C Series Solid State time delay relay 12DNO.1-60C

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Ray Kane

Posted By: hotwaterwizard
Date Posted: June 15, 2005 at 11:04 PM

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

Posted By: hotwaterwizard
Date Posted: June 15, 2005 at 11:06 PM

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

Posted By: soundmasta
Date Posted: June 16, 2005 at 7:33 AM

dei makes a timer module that you can use to control the relay.

Posted By: 704acc
Date Posted: June 16, 2005 at 7:38 AM

The DEI unit does the OPPOSITE of what he is looking for. He wants the relay to latch AFTER the power is applied. The DEI unit latches right away and will remain latched for a set period of time after power is removed. much like the diagram above.

I went through this already on my previous post on this subject. I ended up with the amperite product.

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Ray Kane

Posted By: soundmasta
Date Posted: June 16, 2005 at 9:19 AM

you can use the dei module to controrl the relay. it will work i've done it before.

Posted By: Theshadow27
Date Posted: June 16, 2005 at 6:00 PM

704acc wrote:

I think that is the opposite of what Tame Iti is looking for. Try www.amperite.com and look at the C Series Solid State time delay relay 12DNO.1-60C

switch the 87 and 87a connectors? comon lol

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Posted By: TAME ITI
Date Posted: June 17, 2005 at 2:10 AM

Thanks for all the replies ,They have been more than helpfull ,However our supplier of DEI does not cary this module ,so it looks like I have to make my own ,like the one Hotwaterwizzard posted .Thanks again for all the help ,and if any one else has any other ways to do this ,please keep them comming . posted_image

Posted By: crzyc68
Date Posted: June 22, 2005 at 11:24 AM

Will either of these relays work for a horn in my car? Right now I have a horn hooked up to a toggle switch. It plays for about 6-7 seconds. I would like to be able to push a button and the horn would play through its sequence and shut off. With the toggle I have to turn it on, let the horn go through its sequence and then turn it off. I have a General Lee with the Dixie Horn.

Posted By: hotwaterwizard
Date Posted: June 22, 2005 at 10:43 PM

crzy68

No you need delayed off like one of these,

Change the Capacitor to 100 uF

posted_image .

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

Posted By: crzyc68
Date Posted: June 23, 2005 at 12:21 PM

Is there a part number for what you diagramed out or is it something that I would have to make? I am not that familiar with the symbols on the diagram, but I do have a friend that is an electrician. Would he be able to decipher it for me? Sorry, I am still learning this stuff.

Posted By: hotwaterwizard
Date Posted: June 23, 2005 at 10:09 PM

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

Posted By: hotwaterwizard
Date Posted: June 25, 2005 at 7:49 PM

I just finnished making the circuit I discribed above.

Seams I made a mistake. The values as they are on 12v turn off the relay in about 30 seconds not 3 min as it states. here is a new Diagram with my test results Included.

posted_image

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

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