Our universal motor (comes from an electric mixer!)
The rotor accessible in yellow is supplied by the brushes on the sides
Half stator coils accessible in green and blue
Series mounting: all in series!
Designed for 230 V, it fails to turn in 24 Volts!
In parallel, the rotor being supplied directly, the motor runs
despite the reversal of current, the universal motor has not changed direction!
Changing the direction of the current in the stator AND the rotor = canceling the change!
Alternatively this engine runs too! Since its meaning is not related to polarities ...
Called universal because it runs continuously whatever the meaning and in alternative!
Even in an alternative, the brushless (more reliable, better efficiency) gradually replaces it