always on 12v regulated power supply?
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Forum Name: General Discussion
Forum Discription: General Mobile Electronics Questions and Answers
URL: https://www.the12volt.com/installbay/forum_posts.asp?tid=117702
Printed Date: May 15, 2025 at 12:24 PM
Topic: always on 12v regulated power supply?
Posted By: blaze_fox89
Subject: always on 12v regulated power supply?
Date Posted: November 13, 2009 at 11:33 AM
I need a regulated constant power supply for my 12v RF controller. I have a big Callex DC-DC converter hooked up at the moment but the battery is going flat once a month. I was gonna try one of those solar panels but i'm not sure it will work.
Any help would be appreciated.
Regards, Blaze.
Replies:
Posted By: KPierson
Date Posted: November 13, 2009 at 1:21 PM
How much current does it need to be?
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Kevin Pierson
Posted By: blaze_fox89
Date Posted: November 14, 2009 at 2:04 AM
I'm not really sure to be honest, but the DC-DC converter puts out 310ma on the 12v output and that seemed to work OK.
I took some current measurements today. (first ones ever xp)
Calex DC-DC and Controller:
Static : 27.8ma
1 Relay: 73.1ma
Just Controller:
Static : 8.5ma
1 Relay: 47.8ma
It just needs to power up to 3 tiny 10A relays for up to 5 seconds, but the controller needs to be active at all times.
Sorry I don't have any more information but theres nothing on the RF controller I have.
Regards, Blaze.
Posted By: howie ll
Date Posted: November 17, 2009 at 12:43 PM
I would do an alternator and battery discharge test. That static draw isn't much more than an alarm. Is the vehicle used every day?
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