On 3/10/23 17:42, Paul Koning via cctalk wrote: > CDC 6000 series is the one I know of. But they'd also use either 1 or 3 > phase regular 50/60 Hz power. For example, the console display uses 3 phase > 400 Hz for its power supplies (nice for low ripple) and 60 Hz 110 V for fans. > The CPU cabinet takes 400 Hz power to run its power supplies but 60 Hz power > for the compressors that cool the Freon that cools the logic.
"Power for the basic computer consists of one 250 kva, 400 Hz motor-generator set. The motor-generator set has the capability of providing power to the CPU, MCS, I/O and the MCU. The optional memory requires the use of an additional 80 kva motor-generator set." Cooling? "Cooling for the basic computer consist of two 30-ton water-cooled condensing units. These units cool only the CPU, MCS and I/O sections. The MCU is air-cooled. With the optional memory, the basic computer requires an additional 10-ton condensing unit." --Chuck
