[Soekris] voltage questions

[Poul-Henning Kamp]

In message <20070222224305.ED9F94 at mail.witworx.com>, "RW" writes:
>On Thu, 22 Feb 2007 14:29:22 -0700, Alex S. wrote:
>
>>It's not quite that simple. When you have two batteries charging in series, you need to drain them in series also. Otherwise, one battery is going to overcharge while the other slowly dies a horrible death from sulfating.
>>-Alex
>
>That's right.
>
>The simplest solution I know of is to get a 24-to-12 volt switchmode
>converter of the type commonly available for truck and marine use
>(nominally 24v) to power 12 volt accessories.

They're waaaay to inefficient for this, all he needs is 15 watts,
worst case.

The small PCB mount gadgets are much more efficient in this end,
my usual vendor is Traco who have tons of models.


-- 
Poul-Henning Kamp       | UNIX since Zilog Zeus 3.20
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Never attribute to malice what can adequately be explained by incompetence.