[Lowfer] Power supply voltage

Sat, 12 Apr 2003 20:00:29 -0500

Bad link.

Mike>WE0H
http://www.we0h.us/lf

-----Original Message-----
From: [email protected] [mailto:[email protected]]On
Behalf Of DTX
Sent: Saturday, April 12, 2003 7:56 PM
To: [email protected]
Subject: Re: [Lowfer] Power supply voltage

I sent this helpful URL to Mitch, but if there are others interested....

He goes the "full route" to get all 200+ watts the core will support out at
13.8V.
I believe 12V at 10A is the nominal spec for PC power supplies, therefore
6-8A
should not need bigger diodes and rewound transformers.

Take a look at www.qsl.net/y05ofh/projects and pick the 13.8v_pc_ps
directory and run the 13 8 v whatever page.  I don't see/know the path from
his home page.  It has the best write up on doing this I've seen.  Although
for the 6-7 amps you and I want I don't see the need to re-wind things as he
is talking about.  Nor change rectifiers, heat sinks.  But how to move the
sense line off of 5v to the 12v output and scale, etc.  And a good overall
description of everything going on in those little boxes.

Gary WA6DTX

----- Original Message -----
From: "Bill Ashlock" <[email protected]>
To: <[email protected]>
Sent: Saturday, April 12, 2003 5:36 PM
Subject: Re: [Lowfer] Power supply voltage

> Bob,
>
> >Follow the EZ do it ur self mods in the QST article of a year or so >ago.
>
> I don't subscribe to QST, because, of course, I'm an 'outsider' <G>, but I
> get the gist of how the 5v adjustment when loaded will effect the 12v
> output. I still think the 12v and 5v outputs can be combined even though
17
> volts sounds like a strange value.
>
> >The problem with mine is it is a bit noisy,,,,,, however,, for next to
> > >nothing and with no mod other than >the 5 volt load,, you should be
>able
> >to series several supplies for 24,36 whatever volts.
>
> Now that's a bit low tech, don't you think?
>
> >unless you are working someone running one of them loops which will
> >lite up your house, no need to suppress noise
>
> That would be loop idea #28 from my best seller, right? This is the loop
> that runs from eve to eve 6 ft above the roof, down the both sides of the
> house, through the basement windows, and meeting the final in the lower
> radio shack room. All air!  Har Har
>
> Bill
>
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