Re: [Electronics_101] Re: +5 /-5 power supply
- On Wednesday 29 March 2006 07:11 pm, Stefan Trethan wrote:
> On Thu, 30 Mar 2006 01:52:47 +0200, Roy J. TellasonI agree, and wrote to him abou this point. His response was mostly that it
> <rtellason@...> wrote:
> > http://w5jgv.com/tower_of_power/index.htm
> Neat, though i much dislike the way he did the mains wiring (no isolation
> over the mains terminals and instead of lifting the DC GND internally from
> the case he removed the earth.)
was a "quick and dirty" setup, and that one might not do it that way if time
wasn't a problem. And also something to the effect of one attempt on that
having given both RF noise and output stability problems when he tried it...
> Also, quote:Well, I guess it depends on how much primary current is flowing there. I
> " The power cord goes to the bottom supply which has its case grounded to
> earth through the power cord. A separate set of power wires splits off of
> the first mains connector and feeds two supplies. That reduces the mains
> voltage drop between the supplies under load and ensures that all the
> supplies get the same mains voltage."
> yea sure... ;-)
don't guess that they'd be too syncrhonized.
> This must be mighty loud with the fans....Maybe.
Some folks seem to be more bothered by that sort of noise than others. I know
that at the moment there are six fans and five drives running in here, a
while back (one more machine) it was eight fans and eight or nine drives, I
could hear it down the hall. :-) It never bothered me all that much,
I'd guess that having them out and not enclosed in cases would tend to cut
down on the noise somewhat, too.
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