[Milsurplus] Does anybody remember a torque amplifier?

[J. Forster]

An Amplidyne is a motor driven DC generator. The generator field is
controlled by relatively low power and the output at the brushes has
considerable power gain from the DC field. All the outpower power comes
into the system from the drive motor, which can be AC or DC.

In effect, an amplidyne is a modulator.

Many real Amplidynes are two-stage machines hooked in series. The overall
power gain is the product of the two stage gains. Cleverly, the stages are
oriented at about 90 degrees of rotation, so are decoupled electrically
while sharing the same mechanical structure.

-John

===========



> What you may be remembering is a form of amplidyne. They were used in lots
> of things but most notably on gun turrets. A control stick provided the
> signal to control a much larger high torque motor. Search 'amplidyne' and
> I think you'll find a lot more information than just tractors.
>
> Steve
> KB4DMF
>
>
> ---- Jim Haynes <jhhaynes at earthlink.net> wrote:
>> I have a mental image from 50+ years ago of a thing painted OD and
>> having a motor on it, and an input shaft and an output shaft.  It was
>> called a torque amplifier.  The power was supplied by the motor and
>> a little bit of effort to turn the input shaft resulted in the output
>> shaft turning the same amount with a lot more torque.
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