948493
Descrição
Mapa Mental por Kate Baldwin, atualizado more than 1 year ago
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Criado por Kate Baldwin
mais de 11 anos atrás
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Commutator
- What is a commutator
- A commutator is a simple device for reversing the current direction, through an armature every half turn.
- A commutator is a simple device for reversing the current direction, through an armature every half turn.
- What is commutator made with
- The commutator is made from two round pieces of copper, one on each side of the spindle
- A piece of carbon is lightly pushed against te copper to conduct the electricty to the armature,
- The carbon brushes against the copper when the commutator spins
- The carbon brushes against the copper when the commutator spins
- A piece of carbon is lightly pushed against te copper to conduct the electricty to the armature,
- The commutator is made from two round pieces of copper, one on each side of the spindle
- What happens next?
- As the motor rotates, first ne piece of copper, then the next connects with the brush every half turn.
- The wire on teh left side of the armature always has current flowing in the same direction
- So the armature will keep turning in the same direction
- The pieces of copper are held apart in the centre and do not touch each other.
- They look like a ring of copper which is split down the middle.
- This is why it is called a split-ring commutator
- This is why it is called a split-ring commutator
- They look like a ring of copper which is split down the middle.
- The pieces of copper are held apart in the centre and do not touch each other.
- So the armature will keep turning in the same direction
- The wire on teh left side of the armature always has current flowing in the same direction
- As the motor rotates, first ne piece of copper, then the next connects with the brush every half turn.
Anexos de mídia
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