Electrostatic acoustic converter

Patent

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179181R, H04R 1900

Patent

active

043831397

ABSTRACT:
An electrostatic acoustic converter having two sound transparent electrodes between which a plastic membrane covered with a conductive layer is disposed. The membrane is fixed between two identical insulating plates having openings therethrough, in its greater part each of the insulating plates is coated with an electrically conductive layer which comes into contact with the conductive layer of the membrane and with a metal track with terminals. The metal track is fixed on an insulating card around a centrally situated metal plate having a terminal. The metal plate is multi-perforated and constitutes a sound transparent electrode.

REFERENCES:
patent: 3345469 (1967-10-01), Rod
patent: 3935397 (1976-01-01), West

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