Demonstration Dynamo

PHY 202

Open demonstration model of dynamo for easy understanding of the functioning.

Completely exposed demonstration model.

An armature comprising two coils of copper wire is mounted to rotate about a horizontal axis.

The spin of the armature is obtained for means of one hand cranked driving wheel, diameter 140

mm, coupled via a belt. Transmission ratio 1:4.

The magnetic field is generated by means of one permanent U-magnet supplied with the unit.

Mounted on plastic base, dimensions 150x200 mm, with two 4 mm sockets for connection to

measuring instruments and a LED.

Experiments: Current generation

Dynamo

Interaction between currents and magnetic fields

Motor spinning