1981-03-02
1983-05-10
Fuller, Benjamin R.
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
Bulgarsko Radio
Fuller Benjamin R.
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