31 Jul
2001
31 Jul
'01
10:33 a.m.
Ethan Dicks wrote:
Would it be worth protecting the PSUs from each other through a high-power
diode? The worry is that if one goes south, it'll take the rest (and
the machine) with it.
-ethan
Well, according to the schematics, each 5V power module supplies only
a part of the backplane. So if one goes south, then that would mean
that the machine would simply stop due to loss of (logic) signals.
The power modules are not connected in parallel. If that would be
the case, I guess that the modules would burn themselfs up due to
minute voltage differences and exchange current between them.
True, the modern PC PSU's are not up to the highest standards, but
they deliver 5V@30A and are easy to get. If I would use PSU's from
old, well known brand PC's then I'm not stuck with inferior stuff.
It also allows me to switch them on one by one, so that the inrush
current is not flipping the switch on my automatic fuse.
Ed
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