Re: [TCLUG:22867] Athlons and power supplies

["Thomas T. Veldhouse" <veldy@veldy.net>]

Yeah - but it is quite simple.  You are going to have a 120V (this is a
fixed value) across the power supply unless there is a short.  Thus, the
only thing that changes is Amperage availability.  Assuming the power supply
is not shorted or open and it is actually producing 250W, you can be sure
you have the power required (which is at most 250W).  It doesn't take
electrical engineering to get that far (P = I*V = I^2*R).

Tom Veldhouse
veldy@veldy.net

----- Original Message -----
From: "Philip C Mendelsohn" <mend0070@tc.umn.edu>
To: <tclug-list@mn-linux.org>
Sent: Thursday, October 19, 2000 3:18 PM
Subject: Re: [TCLUG:22867] Athlons and power supplies


> On Thu, 19 Oct 2000, Thomas T. Veldhouse wrote:
>
> > BTW - there is no such thing as quality of power.  If you are getting
250W,
> > that is it - you have 250W.
>
> Not exactly.  Mostly parts is parts when it comes to buying power
> supplies, but there's a lot more to this story than that.  I'll suggest
> taking it off list if anyone really wants to open the can of worms.  It's
> really an electrical engineering thing.  (Counterexample:  1A at 10V is
> 10W, but so is 10A at 1V.  But we're talking about the dynamics of energy
> storage and transfer in a switching mode P.S. -- there's a little more
> math involved.  Then we can talk about local decoupling at the board,
> yada, yada.)
>
> But, I agree, that if you go to a store and buy a big enough supply, that
> should probably take care of your immediate concerns.
>
> Cheers,
> Phil M
>
> --
> "To misattribute a quote is unforgivable." --Anonymous
>
>
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