Process to increase the power of the low frequency electro acous

Details Process to increase the power of the low frequency electro acous Process to increase the power of the low frequency electro acous

1990-12-07

1991-12-03

Kyle, Deborah L.

Communications, electrical: acoustic wave systems and devices

Signal transducers

Underwater type

367157, 367159, 367168, 310334, 310367, H04R 1700

Patent

active

050704869

ABSTRACT:
An electroacoustic transducer according to the invention comprises a stacking of annular plates (13) made of piezoelectric ceramics alternating with annular electrodes (14) and pressed by an axial prestressing stem (15). The contact faces between each plate and the adjacent ones are made of two flat parts (16a, 16b) whose surface is smaller than the maximum cross section, due to the chamfers (19a, 19b, 20a, 20b) which truncate the edges of each plate. One application is the construction of low frequency sonar transmitters. Referenced elements refer to FIG. 3.

REFERENCES:
patent: 2988728 (1961-06-01), Marlow
patent: 3183378 (1965-05-01), McCracken
patent: 3495102 (1970-02-01), List et al.
patent: 4894811 (1990-01-01), Porzio

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