VORRICHTUNG ZUR FUNKENTSTÖRUNG EINER ELEKTRISCHEN KOMMUTATORMASCHINE

摘要

A device is proposed for suppressing radio interference in an electrical commutator machine, in particular a DC motor (10), having a rotor (12) supplied via brushes (14a, b) and having an interference suppression circuit (16) that has at least one capacitor and further components. The device of the invention is distinguished in that the interference suppression circuit (16) on the one hand has an interference suppression ring comprising individual interference suppression elements (56), which contain at least one varistor (28and/or at least one capacitor (30) and cooperate with at least one further outer interference suppression capacitor. The individual interference suppression elements (56) of the interference suppression ring (24) are either located between adjacent laminations (32) of the commutator (34) or are connected by one terminal to one lamination (34) and by the respective second terminal to one another to form a virtual zero point 33).