7 Dec
2004
7 Dec
'04
6:58 a.m.
Paul wrote:
If you use a switcher, make sure the minimum load
current is
suitable. Linear supplies work with no load, but switchers often do
not. In that case, a load resistor can help.
The Cui switchers I recommended have a minimum load current spec of
0.0A, so it won't be a problem. The TU56 will easily present enough load
for any switchers that aren't rated for a LOT of amps. If you try to
use a 5V 100A supply, you may be asking for trouble.
Also: DEC usually quoted +/- 10% on power supplies,
but in reality
that wasn't necessarily true. It's good to assume +10, -0%
tolerance. I know for a fact that DMC11s require that for
reliable operation.
Nothing in the TU56 will be that finicky. The supplies I recommended
are rated at +/- 5% tolerance and will work fine.
Eric