William Maddox <wmaddox(a)pacbell.net> wrote:
Huh? Did I miss something? We're talking about a power supply here, right?
Yes...
A power supply should provide the specified voltage. The power supply must be rated at *at
least* the current (Amps) or power (Watts) drawn by the load, but an excess here does not
hurt. Some power supplies require a minimum load in order to operate correctly, that is
not likely to be an issue here. You will fry a power supply if you pull too much current
from it. You cannot *provide* too much current to the load -- it draws what it wants to.
You *can* provide too much voltage.
--Bill
Wrong... I'll give you an example which ANYONE and EVERYONE working with electricity
should know, and if they don't they SHOULD NOT work on anything even remotely related
to electricity until they do know it.
You know that it's the current of the electricity is what will kill you right? You
could have thousands of volts running through your body and still live. How is this
possible, you might ask? Well if the the current (power) is below .5 mA then it should not
cause a problem. Ask any electricity teacher "At what point will electricity kill a
human being?" and their response will be something along the lines of "Anything
at or above .5 mA will (more than likely) kill a human being." Of course there have
been cases that said otherwise but this is the majority case. Same thing applies to
delicate electronics... apply more amps then it's rated to handle and it's fried.
Just last week I fried a 2.4GHz wireless phone by applying a power supply that had exactly
the rated voltge but was 1A instead of the required 800mA. I smelled smoke not long after
plugging it in. All this in a unit that worked properly with the right PSU just 2 weeks
before... the original PSU being lost. Need I say any
more? Current is everything... voltage is nothing.
Lyos Gemini Norezel
BTW- goto the nearest high school and ask the electricity teacher about this... see what
he say... then compare it to what I said. Remarkably like, eh? LOL
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