An automotive armature is part of an electrical
device which includes many current-carrying windings. It is a hollow
cylinder, with coils of wire on its walls. These windings rotate within
a magnetic field. It is an electromagnet made by coiling thin wire
around two or more poles of a metal core. It is the stationary part of
the electrical device and also known as a stator or pole core. It is
part of an alternator.
Characteristics of Electrical Armature
- Armature current is also limited by heat.
- If the armature is fed with power, it is known as motor.
- It is supported in bearings which are set inside end plates.
- Usually, it has a ball bearing at the pulley end, a bronze
bushing at the other end.
Functions of Armature
There are two main functions of the Armature:
- It carries current crossing the field, thus creating shaft torque
or force
- It generates an electromotive force
