ELECTROMAGNETIC GENERATORS

There are two types of generators, depending on the type of current that is produced:
-Dynamos: They produce direct current. A dynamo consists of a magnet and a rotary coil. The coil is located between the two poles of the magnet. The ends of the coil have two semi-circular conductors, which form the commutator.

-Alternators: They produce alternating current. They are identical to a dynamo, except for the commutator, which consists of two metallic rings connected to carbon brushes. Instead of direct current, this produces alternating current.