ELECTRIC MOTOR ROTOR

A rotor for an electric motor comprises a shaft 21, a commutator 30 fitted to the shaft 21 and connected to a winding 23 wound around poles of an armature core 22, and a noise suppressor 40. The noise suppressor 40 has chip capacitors 44 connected to terminal portions 38 of commutator segments 32. The capacitors 44 have a common terminal 45 connected together to form a star connection via a ring 47 formed from a conductive resilient wire. The capacitors 44 may be soldered to the wire ring 47 and to the commutator segments 32 or may be held in recesses 53 formed in the base of the commutator in direct contact with the commutator segments 32 under resilient urgings of the ring 47 to form a solderless connection. It is particularly suited to rotors using mechanical connection type commutators to form solder-free rotors.