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Date: Sun, 08 Dec 2002 08:56:01 -0800
From: Raymond Rogers
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Subject: Re: Operating a 6V max circuit off of a 12V car battery
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> wrote in
>>It's not, it varies from about 6-80V under various fault conditions.
>>What's the current needed from both?
> Good lord! Never would have guessed that it would be that bad! Current
> should be around 5ma normally. Well, that's going on the assumption that
> relays (which will only be operated very occasionally for only a couple of
> seconds) don't use very much current. Thanks!
Actually the automotive equipment manufactures have to meet requirements
far beyond that; but in the one-off case for a particular vehicle it
will probably be okay.
The automotive manufactures want an extremely small number of field
failures despite abuse. Thier failure rates for modules are on the
order of ppm.
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