dynamo

Continuous generator of electric current; it is used, for example, on bicycles for lighting.

field electromagnet

Fixed electromagnet made up of an iron bar and coils; when exposed to an excitation current, it creates a magnetic field.

commutator

Conductive plates that are insulated from each other and connected to the field coil; they collect and rectify the induced alternating current.

shaft

Cylindrical part that transmits a rotational motion to the dynamo’s armature.

frame

Metal casing that houses the magnetic field.

fan wheel

Device with blades that circulates air to cool the dynamo.

armature

Moving part of the dynamo that is made up of a coil, which produces an electric current as it rotates inside the field.

coil

Conductive wire that is rolled around the armature cylinder, which rotates in the magnetic field produced by the inductor to create an electric current.

brush

Conductor that rubs against the commutator plates and transmits the continuous current produced by the dynamo to an exterior circuit.