Planar electrodynamic electroacoustic transducer

Details Planar electrodynamic electroacoustic transducer Planar electrodynamic electroacoustic transducer

1980-01-02

1982-06-29

Stellar, George G.

H04R 900

Patent

active

043373798

ABSTRACT:
A planar type electroacoustic transducer comprising a diaphragm; at least one magnet plate on which are formed a plurality of mutually different and spaced magnetic poles in a matrix shape of columns and rows so as to face the diaphragm at a distance enough to involve the facing surface of the diaphragm within magnetic fields associated with the magnetic poles; and an electric conductor formed on the diaphragm to run in alternate directions of a column and a row along a path corresponding to the spaces defined between the respective magnetic poles without straightforwardly passing by any two magnetic poles of a same column or row. This diaphragm may be provided with ribs to further minimize the development of partial vibrations of the diaphragm. Those portions of the conductor running in regions of weak magnetic fields may have an enlarged size or smaller length to reduce the impedance of the conductor.

REFERENCES:
patent: 3873784 (1975-03-01), Doschek

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