400Hz 3-phase power also helps. That gives a ripple
frequency of 2400Hz in
a fullwave "star" configuration, with only 13% ripple, no? The same holds
for early model Cybers (even before they were called "Cyber") which used a
different variety of logic.
Well, yes, of course. Which leads to the question why DEC did not go
that route. I guess the KL10 power supply people were drunk (again).
--
Will