Moving voice coil loudspeaker with magnetic damping increasing a

Details Moving voice coil loudspeaker with magnetic damping increasing a Moving voice coil loudspeaker with magnetic damping increasing a

1978-03-01

1979-07-03

Stellar, George G.

179180, H04R 902, H04R 906

Patent

active

041601335

ABSTRACT:
There is provided an electrodynamical loudspeaker comprising a voice coil fixed to a diaphragm and resiliently suspended for oscillation in the air gap of a magnet system, and wherein a short-circuit ring is provided at at least one end of the voice coil. The or each short-circuit ring may consist of solid, electrically conducting material or it may consist of a number of turns of electrically conducting material and with short-circuited end points.

REFERENCES:
patent: 1767837 (1930-06-01), Davis et al.
patent: 2269284 (1942-01-01), Olson
patent: 2489862 (1949-11-01), Cook
patent: 2556816 (1951-06-01), Lukacs
patent: 2769942 (1956-11-01), Hassan
IBM Technical Disclosure Bulletin, vol. 19, No. 10, Mar. 1977, Bastianelli et al., "Linearization of an Edge-Wound Voice Coil Motor".

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