- He went on to build an electric motor in 1832 and invented the commutator, an integral part of most modern electric motors.
- One of the places you need them is in modern small motors which don't have a commutator.
- It may also increase efficiency of machines as there won't be frictional effects of brushes, commutators, etc, on the motor itself.
- The brushes conduct electricity to the commutator.
- You can see that the commutator is simply a pair of plates attached to the axle.