On 10/12/24 16:25, Wayne S via cctalk wrote:
Didn’t all the IBM mainframes use 400hz? Maybe ask the IBMers how they got
400hz.
Also, can the local power company supply it?
The IBM 370/145 definitely used 400 Hz internally, there was
a 60 Hz 3-phase to 400 Hz 3-phase motor-alternator in the
back of the power cabinet.
I know that larger installations had massive 400 Hz UPS's
that also did the conversion from 60 Hz to 400 Hz.
I can't imagine any local power utility would want to supply
400 Hz power.
Jon
