On 11/27/2014 08:28 AM, William Donzelli wrote:
When a
single-ended
signal crosses a power supply domain, if the supplies aren't very
close, bad things can happen.
This is a problem that the power supply folks solved
a long time ago.
If they still can not get a number of supplies tracking each other
properly, then fire them and get new guys.
Well, when you have hundreds of Amps flowing across the
backplane, it gets
hard to have all boards having the same voltage. Even if
you have, maybe 4
boards in a block, there will be significant voltage drop
from the feed end
to the far end. If you make
the power planes too thick, it
becomes impossible
to solder the backplane connectors, so you have to go to
press-fit contacts.
That is all well-known technology now, but might have been
on the cutting
edge when the KL10 was designed.
Jon