A device mounted on the armature shaft and consisting of a number of wedge shaped copper segments arranged around the shaft These segments are insulated from the shaft and from each other The motor brushes ride on the periphery of the commutator, and electrically connect and switch the armature coils to the power source
A piece of apparatus used for reversing the direction of an electrical current; an attachment to certain electrical machines, by means of which alternating currents are made to be continuous or to have the same direction
a ring of the copper wire endings from the surface of the armature When the armature turns, the commutator is contacted by brushes which slide over it and transmit the generated electricity on to be used
A cylindrical ring or disk assembly of conducting members, individually insulated in a supporting structure with an exposed surface for contact with current-collecting brushes
A device that makes the electrical connection to the moving coil of a motor or generator It allows current to pass in or out of the coil while it rotates
The part of a DC motor armature that causes the electrical current to be switched to various armature windings Properly sequenced switching creates the motor torque The commutator also provides the means to transmit the electrical current to the moving armature through the brushes that ride on the commutator