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dynamo click to hear : dynamo

Continuous generator of electric current; it is used especially on bicycles for lighting.
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field electromagnet commutator shaft frame fan wheel armature coil brush

field electromagnet click to hear : field electromagnet

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

commutator click to hear : commutator

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

shaft click to hear : shaft

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

frame click to hear : frame

Metal casing that houses the magnetic field.

fan wheel click to hear : fan wheel

Device with blades that circulates air to cool the dynamo.

armature click to hear : 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 click to hear : 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 click to hear : brush

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