[Milsurplus] Speaking of 400 Cycle Stuff

[Clare Owens]

I used to use two 1A 400Hz variable transformers as HO train controllers
back in the days before digital control.  They work great with 12 volts at
60Hz across them and probably would be fine at 24.  They provided a very
low impedance, low noise source for the little engines.  10 amp units would
be good for fine adjusting the filament voltage on power tubes.

Clare


On Sun, Apr 29, 2012 at 1:00 PM, Steve Hilsz <jydsk at tds.net> wrote:

> I found five (5) New-In-The-Box panel-mount Variacs, General Radio Model
> M10, rated at 120 volts, operable between 350 to 1200 cycles (HZ for you
> newcomers).
>
> Here are the Specifications:
>
> Input Volts 120
> Output Volts 0-120 or 0-140
> Output amps 10
> Max output amps at 0-120: 13 amps, at 0-140 10 amps
> Maximum KVA 1.56
> No-Load Watts at 400 Cycles: 17
> Ounce-Inch Driving Torque: 15-30
>
> Item Weight 6.5 pounds.
>
> $15 plus shipping.
>
> You read correctly, fifteen bucks. Plus postage to keep the economy going.
>
> This is military surplus, for crying out loud.
>
> Steve Hilsz
> jydsk at tds.net
> ______________________________________________________________
> Milsurplus mailing list
> Home: http://mailman.qth.net/mailman/listinfo/milsurplus
> Help: http://mailman.qth.net/mmfaq.htm
> Post: mailto:Milsurplus at mailman.qth.net
>
> This list hosted by: http://www.qsl.net
> Please help support this email list: http://www.qsl.net/donate.html
>