Rotor With Slip Rings
The rotor consists of two halves (claw-poles) which interlock. The halves are pressed onto the rotor shaft. There are twelve claws on the rotor, i. e. twelve poles. One half consists of six north poles and the other half six south poles. The excitation winding is secured on the rotor shaft between the claw-pole halves. The excitation winding (also known as rotor winding) consists of a circular coil surrounded by the claw-poles and connected to the slip rings. The charge regulator supplies a magnetic current through carbon brushes positioned against the slip rings. The higher the current in the rotor the stronger the magnet field of the rotor, and therefore the higher the current generated in the windings of the stator.