extending momentary neg. pulse

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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=65856
Printed Date: July 16, 2025 at 7:04 AM

Topic: extending momentary neg. pulse

Posted By: mxxmikexx
Subject: extending momentary neg. pulse
Date Posted: November 08, 2005 at 3:58 PM

Im trying to find the best way to extendend a momentary neg. output pulse (500 ma.) from an alarm and extend that to about 5 seconds (give or take)to energize a relay. can this be done easily with a few components ????, or im i better off just shelling out the $9 for an adjustable pulse timer relay (528T)

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Mike Battaglia
Specialized Car Audio
Bensenville IL 60106

Replies:

Posted By: hotwaterwizard
Date Posted: November 09, 2005 at 11:26 PM

Do you want Delayed on or Delayed off?

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

Posted By: hotwaterwizard
Date Posted: November 09, 2005 at 11:27 PM

Here is a Timer posted_image

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

Posted By: hotwaterwizard
Date Posted: November 09, 2005 at 11:35 PM

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

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