Piezo transducers with mechanical amplification for very low fre

Details Piezo transducers with mechanical amplification for very low fre Piezo transducers with mechanical amplification for very low fre

1979-05-08

1981-09-01

Tudor, Harold J.

Communications, electrical: acoustic wave systems and devices

Signal transducers

Underwater type

367155, 367160, 367174, H04R 1700

Patent

active

042875820

ABSTRACT:
A new piezoelectric transducer incorporated with a mechanical amplifier is described. The transducer comprises a rigid base plate; two lateral plates whose lower edge is connected to the plate by a thin portion; a stack of piezoelectric elements having alternate electrodes; a horn formed of a flexible elastic diaphragm which connects together the upper edges of the two plates; an enclosure and a sealing skin which is acoustically transparent. The tranducer is capable of emitting or receiving high power acoustic waves of very low frequencies including for instance, a few Hertz to 500 Hz.

REFERENCES:
patent: 3258738 (1966-06-01), Merchant
patent: 3614486 (1971-10-01), Smiley
patent: 3649857 (1972-03-01), Knappe

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