Isn't that usually used just for ships and aircraft? | Hacker News

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jacquesm on July 8, 2017 | parent | context | favorite | on: Before 1948, LA's Power Grid Ran at 50hz

Isn't that usually used just for ships and aircraft?

tyingq on July 9, 2017 | [–]

There's a fair amount of ground military equipment that uses 400Hz also. Radar, microwave radios, satcom, etc.

jis on July 8, 2017 | [–]

And old IBM computers!

wglb on July 9, 2017 | [–]

With a motor-generator units in each rack frame. Also used by xerox/SDS computers

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