Time Delays

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Overcranked23

Copper - Posts: 67

Joined: December 21, 2003

Location: United States

Posted: May 16, 2006 at 3:58 PM / IP Logged

I am wondering how you could set up a circuit to time delay. What I want to do is have aset of lights (led in the head lights that run on B+ (while the truck is running but I want them to stay on a while after I shut the vechile down. Any Ideas. I know that they make time delay realays but I have not found any that fit my application. I would like some choices here so the more ideas you have the better off I would be. adjustable time frames would be nice too

don't fowl the track

hotwaterwizard

Silver - Posts: 1,350

Joined: December 11, 2003

Location: California, United States

Posted: May 16, 2006 at 8:20 PM / IP Logged

how long do you want them to stay on?

12v LED's or standard 2 volt

John DeRosa (Hotwaterwizard)

Stockton California

When in doubt, try it out !

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Overcranked23

Copper - Posts: 67

Joined: December 21, 2003

Location: United States

Posted: May 17, 2006 at 3:02 PM / IP Logged

adjustable would be nice a couple minutes max I guess. I not sure what you mean by voltage I thiught that standard voltage was around 3.3

don't fowl the track

hotwaterwizard

Silver - Posts: 1,350

Joined: December 11, 2003

Location: California, United States

Posted: May 17, 2006 at 10:39 PM / IP Logged

OKAY

How about this?

You could substitute a 1 meg pot for R

Time Delays -- posted image.

John DeRosa (Hotwaterwizard)

Stockton California

When in doubt, try it out !

hotwaterwizard

Silver - Posts: 1,350

Joined: December 11, 2003

Location: California, United States

Posted: May 17, 2006 at 10:47 PM / IP Logged

Oh yea here is the pinout for the LM555 Timer IC

Time Delays -- posted image.

John DeRosa (Hotwaterwizard)

Stockton California

When in doubt, try it out !

ghost ryder

Member - Posts: 3

Joined: May 12, 2006

Posted: May 18, 2006 at 8:43 AM / IP Logged

A Dei 528t relay maybe what you're looking for

Overcranked23

Copper - Posts: 67

Joined: December 21, 2003

Location: United States

Posted: May 18, 2006 at 2:49 PM / IP Logged

I like the Idea of the premade relay anyone have any experience with that relay and could tell me how that they would set this up. I want the lights to be on all the time with ign and when the Ign is turned off I want the lights to stay on for 60-90 seconds.

don't fowl the track

hotwaterwizard

Silver - Posts: 1,350

Joined: December 11, 2003

Location: California, United States

Posted: May 18, 2006 at 10:05 PM / IP Logged

Time Delays -- posted image. This Timer is 0 to 90 seconds. What happened to 4 or 5 min?

http://www.drdetailshop.com/528T.htm

528T Pulse Timer Relay

This special accessory is an adjustable timer with a built-in 30A relay. The "pulse" timer can be triggered by a + or - pulse or a change of state (from + to - or vice-versa) on the stripe wire.

This product has many popular uses by installers of mobile electronics, some examples: what do you do with a multi-channel remote when the customer has one car and no truck release? Add a pulse timer relay.

If you need to disconnect a circuit for a certain amount of time, so that the alarm does not activate, you can use the pulse-timer's normally closed circuit, pulse the stripe wire to disconnect the circuit for up to 90 seconds.

Adjustable timer from 0 - 90 seconds.

Time Delays -- posted image.

John DeRosa (Hotwaterwizard)

Stockton California

When in doubt, try it out !

hotwaterwizard

Silver - Posts: 1,350

Joined: December 11, 2003

Location: California, United States

Posted: May 18, 2006 at 10:08 PM / IP Logged

Guess what?

It looks like it uses the same circuit I gave you with the 555 timer.

John DeRosa (Hotwaterwizard)

Stockton California

When in doubt, try it out !

Overcranked23

Copper - Posts: 67

Joined: December 21, 2003

Location: United States

Posted: May 19, 2006 at 2:50 PM / IP Logged

Ok Now I have never tried this kind of setup before so mabye you could give me a little detail about the whole pulse what ecactaly does that consist of? what do I use for a pulse

don't fowl the track

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