On 2015-07-29, at 05:57, R.S. wrote:

> I don't know power consuption, but nowadays it's not hard to get 
> semiconductor-based power supply which generater 60Hz or 50Hz or any value 
> you want (within some range).
>  
I suppose a 1403 requires a couple kW.  That shouldn't be an obstacle:

    https://en.wikipedia.org/wiki/High-voltage_direct_current

CDC equipment circa 1970 used 400 Hz with rotating mechanical converters.
Provided considerable immunity to power surges.  Flywheels?

-- gil

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