EMI/RFI suppressing brush holder assembly for electric machines

Details EMI/RFI suppressing brush holder assembly for electric machines EMI/RFI suppressing brush holder assembly for electric machines

1992-01-16

1993-05-04

Stephan, Steven L.

Electrical generator or motor structure

Dynamoelectric

Rotary

310239, 310251, H02K 524, H02K 1300

Patent

active

052084990

ABSTRACT:
A commutating brush assembly for rotating electrical equipment is constructed to suppress electromagnetic/radio frequency interference emissions, particularly in the radio frequency range. This is achieved by fabricating the EMI/RFI suppressing brush holder assembly from a material that itself suppresses EMI/RFI emissions generated by electromagnetic apparatus such as motors, generators, rotary switch gears, etc. The EMI/RFI emission suppression capability of the novel assembly may be further enhanced by the addition of certain add-on electrical components such as capacitors or radio frequency choke coils and the like.

REFERENCES:
patent: 3792298 (1974-02-01), Hamman
patent: 4590398 (1986-05-01), Nagamatsu
patent: 4845393 (1989-07-01), Burgess et al.
patent: 4855631 (1989-08-01), Sato et al.

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