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I have a situation where I have some devices running off of 48VDC and
some devices running off of 12VDC[1] and I'm interested in a single
power source for both. Obviously, this will require DC-to-DC
conversion. The only way I know to convert DC to DC is to pass
through AC first. This has two potential drawbacks of being
inefficient and causing RFI. I've ordered the ARRL Handbook and it's
on the way, so I'll read what they have to say, but I was curious
about what the newsgroup residents thought about this concept.

Anyway, I have two questions: is there a clean way to do this, and is
it better to go from 48 to 12 or from 12 to 48? Another question: if
48 to 12 is better, where can I get a honking charger/supply that
can supply the higher voltage?

Thanks!

Jack.

[1] Yes, I know it's 13.8VDC and not 12VDC, and about 55.2VDC for
48VDC, but focus on the real issue, 'kay?
- --
Jack Twilley
jmt at twilley dot org
http colon slash slash www dot twilley dot org slash tilde jmt slash
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