Minimal inductance electrodynamic transducer

Details Minimal inductance electrodynamic transducer Minimal inductance electrodynamic transducer

1993-04-05

1995-01-10

Kuntz, Curtis

Electrical audio signal processing systems and devices

Electro-acoustic audio transducer

Having electrostatic element

381199, 381201, 381205, H04R 2500

Patent

active

053814835

ABSTRACT:
A minimal inductance electrodynamic transducer having ferromagnetic shunting rings coated with a highly conductive material to increase the induced current carrying capacity of the transducer. A plurality of thin shunting rings separated by a non-conductive adhesive, attached to a pole piece connected to a magnet and/or a center pole, allows the device to operate at high power levels without saturation. The shunting rings also allow for sufficient induced current to flow in the magnetic circuit in order to oppose the magnetic field created by the voice coil.

REFERENCES:
patent: 1992300 (1935-02-01), Fanger
patent: 2727949 (1955-12-01), Lokkesmoe
patent: 3830986 (1974-08-01), Yamamuro
patent: 3867587 (1975-02-01), Yamamuro
patent: 3881074 (1975-04-01), Kawamura
patent: 3922501 (1975-11-01), Yamamuro
patent: 4160133 (1979-07-01), Wiik
patent: 4289937 (1981-09-01), Ikeda et al.
patent: 4783824 (1988-11-01), Kobayashi
patent: 5062140 (1991-10-01), Inanaga et al.
The Audio Cyclopedia, Section 20, pp. 1079-1080.
JA 58-120396, Jul. 18, 1983, Abstract.
JA 60-214198, Oct. 26, 1985, Abstract.
JA 57-28497, Feb. 16, 1982, Abstract.
JA 57-196697, Dec.2, 1982, Abstract.
JA 2-131100, May 18, 1990, Abstract.
JA 2-237393, Sep. 19, 1990, Abstract.

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