24-12V with isolated outputs

Printed From: the12volt.com
Forum Name: Car Audio
Forum Discription: Car Stereos, Amplifiers, Crossovers, Processors, Speakers, Subwoofers, etc.
URL: https://www.the12volt.com/installbay/forum_posts.asp?tid=37615
Printed Date: November 07, 2025 at 9:01 AM

Topic: 24-12V with isolated outputs

Posted By: ghj20
Subject: 24-12V with isolated outputs
Date Posted: August 17, 2004 at 7:51 PM

I am hoping to use the Alfatronix 24-12V DC-DC step down converter to power a HU in a 24V Jeep. Out put of the converter is said to be isolated(apparently useful for petrochemical vehicles) However my problem is that if i use the positve and negative outputs of the converter for power and ground respectively, do i have to isolate the HU cage from the vehicle chasis? or is it ok the HU to touch the chasis. Any ideas? cheers

Replies:

Posted By: haemphyst
Date Posted: August 18, 2004 at 12:57 AM

If it is an isolated version, it must be just that - ISOLATED. If it is a common ground (earth) then the three chassis can all be electrically connected. Read you manual to determine which you have.

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It all reminds me of something that Molière once said to Guy de Maupassant at a café in Vienna: "That's nice. You should write it down."

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