Permanent magnet field motor with radio frequency...

Details Permanent magnet field motor with radio frequency... Permanent magnet field motor with radio frequency...

H - Electricity

02

K

310/41

H02K 11/00 (2006.01)

Patent

CA 1162221

PERMANENT MAGNET FIELD MOTOR WITH RADIO FREQUENCY INTERFERENCE SUPPRESSING CAPACITOR Abstract of the Disclosure The permanent magnet fields encircling the armature of a direct current motor are encircled by a pair of radially spaced cylindrical metal members separated by a cylindrical dielectric member. One of the metal members and of of the brushes that engages the commutator of the motor are grounded. The other brush and the other cylin- drical metal member are connected to a direct current power supply, whereby a capacitor is formed by the three cylin- drical members for suppressing radio frequency noise gen- erated by sparking of the brushes at the commutator.

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