[Lowfer] [Other] History AC

[Tom Norris]

400 Hz power is still used in aircraft onboard gear. Makes for much
lighter motors, transformers, etc. The military used to make
extensive use of it in some higher power mobile equipment as well.

I seem to remember hearing back in the '80s there were still
some places on the old Niagra 25 Hz power grid. Anyone know
if that is still the case?

Tom

>
>
>I also vaguely remember talk/writings in the trade rags about how much steel
>and $$ could be saved if we would switch to 400Hz.  This was after all the
>WW2 experience with aircraft where weight is critical.  What they forgot to
>mention was the cost to switch from 60hz in 1960 ;-)
>
>Gary WA6DTX