Variable geometry electromagnetic transducer

Details Variable geometry electromagnetic transducer Variable geometry electromagnetic transducer

1993-10-06

1997-05-06

Tran, Sinh

Electrical audio signal processing systems and devices

Hearing aids, electrical

Specified casing or housing

381203, H04R 2500

Patent

active

056279035

ABSTRACT:
A variable geometry transducer diaphragm having an electrical conductor layer, with a conductor pattern, is positioned on an insulating layers. Magnets used to create an electromagnetic field around the conductors may be placed in the insulating layer or formed as part of the frame supporting the diaphragm. Alternatively, the frame may be constructed to function as plates of a capacitor creating an electrostatic field around the diaphragm.

REFERENCES:
patent: 1403849 (1922-01-01), Delany
patent: 4276449 (1981-06-01), Sawafuji
patent: 4322698 (1982-03-01), Takahashi et al.
patent: 4491698 (1985-01-01), Larson et al.
patent: 4544806 (1985-10-01), Nieuwendijk et al.
patent: 4699242 (1987-10-01), Ono
patent: 4782471 (1988-11-01), Klein
patent: 5430805 (1995-07-01), Stevenson et al.

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