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fire truck capacitor discharge

Printed From: the12volt.com
Forum Name: General Discussion
Forum Discription: General Mobile Electronics Questions and Answers
URL: https://www.the12volt.com/installbay/forum_posts.asp?tid=134189
Printed Date: May 09, 2025 at 11:19 PM


Topic: fire truck capacitor discharge

Posted By: blu_olr
Subject: fire truck capacitor discharge
Date Posted: May 10, 2013 at 6:35 PM

Hi guys!

I have a minor issue on a new Spartan ERV Star Series Fire Trucks. Basically the truck uses "v-mux" mutiplexing system to control its I/Os. 

Most fire trucks these days, come with a foam system install on their pumps; which injects foam when pumping. The motors used, have a capacitor wired in to help with the buffer/demand. My problem is when the truck shuts off, the capacitor discharge supplies current to nodes which feedback to the markers lights. They evenually go out, but im getting complaints from different departments wanting it all off when the truck is off.

any suggestions?



-------------
bLu



Replies:

Posted By: oldspark
Date Posted: May 10, 2013 at 6:39 PM
A relay that disconnects when not in use. (Probably before the cap and pump.)


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