Demonstration Dynamo

A model of the simplest form of d.c. electric motor, having 3-pole armature wound with emelled copper wire, and a permanent magnetic field provided by a removable bar magnet. The construction of the model is completely open and all components are readily observable. A disc-type commutator is incorporated and exterl connection to the phosphorous bronze bushes is by means of a pair of 4mm sockets. The motor operates on 6-8V d.c.