[Lowfer] Power supply voltage...good link

Sat, 12 Apr 2003 19:08:27 -0700

oops.  That comes from reading "backwards" from the page ;-)  I originally
got there from a link in some other page with indirection.  One of those
really long search replies full of %20 and such.  And of course once I mark
it, I go back without typing anything in.

Thanks for following it through....I think it is a good place to start such
conversions.

Gary WA6DTX

----- Original Message -----
From: "WE0H" <[email protected]>
To: <[email protected]>
Sent: Saturday, April 12, 2003 6:02 PM
Subject: RE: [Lowfer] Power supply voltage...good link

> It is www.qsl.net/yo5ofh/projects.
>
>
> 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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