I just came across this:-
I'm very sceptical, on for two reasons.
Firstly, the magnetic field from the windings will be across the space for the armature, not along its axis.
Secondly, with so little iron in the armature space, there would be so little inductance in the field winding that it would take far too much current with no load and the winding would overheat very quickly.
Any other thoughts?
Firstly, the magnetic field from the windings will be across the space for the armature, not along its axis.
Secondly, with so little iron in the armature space, there would be so little inductance in the field winding that it would take far too much current with no load and the winding would overheat very quickly.
Any other thoughts?