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double pulse positive to single pulse neg

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Forum Name: General Discussion
Forum Discription: General Mobile Electronics Questions and Answers
Printed Date: December 05, 2021 at 3:27 PM

Topic: double pulse positive to single pulse neg

Posted By: t&t tech
Subject: double pulse positive to single pulse neg
Date Posted: January 23, 2014 at 12:31 PM

I have a single positive siren output that pulses single positive on arm and double positive on disarm. I want to use this output to drive my negative trigger door locks. The lock is simple enough. The unlock is my issue. I need something that will activate with a double pulse positive only to generate a single negative pulse. A point in the right direction is all i need. Thanks in advance.


Posted By: kreg357
Date Posted: January 23, 2014 at 2:15 PM

Not exactly cheap ( $18 ) but the PAC TR-7 will do what your want.  Use Feature #14, the Green wire for the (+) input pulses from the Siren, the White wire for the (-) output pulse to the Unlock wire and program for two input pulses within 3 seconds.

Here is a link to the PAC TR-7 guide  :

Soldering is fun!

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