[ARC5] 400 & 800 cycle power aboard ship

[J. Forster]

Smallish rotary converters certainly do scream, however the lager ones,
not so much.

We had a 10 kW unit at a lab I worked in and it was really quite quiet.
The generator part was a many pole-pair machine, belt driven.

It was probably quiet because it didn't spin very fast.

-John

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>
>
>
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> Mike Everette wrote:< "A lot of 400 cycle powered gear was used aboard USN
> ships during WW2. >
>
>
> The shipboard equivalent of the GP series of transmitters is the TCE
> series.  It is slightly larger and uses steel for the chassis & covers.
> The surprising thing is that the TCE also requires 600 to 800 cycle power
> (in addition to 28 volts DC).
> Go figure.
> My memory says that the preliminary GP-7 manual indicated that the 800
> cycle power source was an 800-1 inverter.  These inverters were reputed to
> be at least as good sirens as they were inverters.
> Jim Horn
>
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