Dave Plowman (News) wrote:
In article ,
The Natural Philosopher wrote:
The commutator is to ensure the field
in the rotor is aligned wrt the stator to provide continuous torque.
Not sure where you get 3 phase from.

Each winding gets an AC signal.

No - it gets switched polarity DC. A different thing entirely.


NO, it is true alternating current in the meaning of the term. Current
that has an average value of zero, but has at any given time, a value
that is not zero.


Switched polarity DC *IS* AC!!