I have the instrument shown in the photo and I want
to play with it. There are resolvers in it.
They are not the problem. But there are motors inside
of a type I dont know.
The motors have a motor part and a tacho part.
The motor part has two windings and an
additional winding labeled "ref 26V 400c/s" .
It might be a "two phase AC torque motor" but I am
not sure. I there an avionics expert there to help me ?