24VDC to 12VDC
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=139437
Printed Date: April 29, 2024 at 11:26 PM
Topic: 24VDC to 12VDC
Posted By: pts760
Subject: 24VDC to 12VDC
Date Posted: September 16, 2015 at 5:01 PM
I have a customer coming in with a military truck. The vehicle has a 24VDC setup. I haven't seen or tested anything in the vehicle to check for 12VDC circuitry( like a bus that uses 12v and 24v). I'm putting in a reverse camera and two side cameras. How are people generally converting the 24VDC to 12VDC (if I need to). Are installers using a voltage regulator or is there a easier way of doing it. BTW the cameras won't work with 24VDC.
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I drink current, eat ohms, and bleed voltage
Replies:
Posted By: i am an idiot
Date Posted: September 16, 2015 at 8:46 PM
Does it have 12 volt or 8 volt batteries?
Posted By: Phreak480
Date Posted: September 16, 2015 at 8:59 PM
What kind of truck is it? Likely it's 2 12 volt batteries.
Posted By: pts760
Date Posted: September 16, 2015 at 10:43 PM
I'm unsure on the exact truck because I didn't talk to the customer but I believe it has (2) 12v batteries in series
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I drink current, eat ohms, and bleed voltage
Posted By: Ween
Date Posted: September 16, 2015 at 11:08 PM
I've used a linear voltage regulator...years ago, not the most efficient method though. A switching regulator would have much better efficiency. As a plus, the cameras probably don't draw much power. The linear regulator wouldn't generate much heat.
M
Posted By: i am an idiot
Date Posted: September 17, 2015 at 1:17 AM
Chances are there are 12 volt batteries. Are the cameras to run all the time, or just with ignition? If only with ignition find a relay with a 24 volt coil and get power off the battery that is grounded to the chassis.
Posted By: howie ll
Date Posted: September 17, 2015 at 4:41 AM
Most trucks over 3.5 tons in Europe run 24 volts.
This is the sort of thing they have built in.
voltage_dropper.png
Otherwise go with Mr. Idiot's plan, that's how I do C/vehicle alarms. ------------- Amateurs assume, don't test and have problems; pros test first. I am not a free install service.
Read the installation manual, do a search here or online for your vehicle wiring before posting.
Posted By: pts760
Date Posted: September 17, 2015 at 5:25 PM
Thanks for the info everyone. Now I'll have a better idea of what's at hand when the truck comes in but I think the install Is gonna be more on the lines of howie's suggestion so I'll have to get a voltage dropper just to be safe.
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I drink current, eat ohms, and bleed voltage
Posted By: howie ll
Date Posted: September 17, 2015 at 5:29 PM
I'm positive they're also available in the US, here we have all sorts of current capacities but I doubt you'll need more than the lowest.
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Amateurs assume, don't test and have problems; pros test first. I am not a free install service.
Read the installation manual, do a search here or online for your vehicle wiring before posting.
Posted By: Phreak480
Date Posted: September 19, 2015 at 8:31 PM
Yes there are many 24VDC to 12VDC converters available here in the states. A quick web search will yield numerous current capacities.
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