Transducer

Details Transducer Transducer

1983-08-22

1995-08-01

Tudor, Harold J.

Communications, electrical: acoustic wave systems and devices

Signal transducers

367141, 367157, 367163, 2503383, 310800, H04B 1700

Patent

active

054385539

ABSTRACT:
A transducer having an energy conversion medium for converting changes in applied mechanical energy into corresponding changes in thermal energy and a pyroelectric material in thermal energy transfer relationship with the energy conversion medium for producing an electrical output substantially in response to the converted thermal energy. Such transducer is particularly useful as a hydrophone in detecting low frequency sound waves emitted by, or reflected from, underwater objects.

REFERENCES:
patent: 2637823 (1953-05-01), Anderson et al.
patent: 3971250 (1976-07-01), Taylor
patent: 4204135 (1980-05-01), Murayama
patent: 4284921 (1981-08-01), Lemonon et al.
patent: 4345359 (1982-08-01), Micheron
patent: 4405402 (1983-09-01), Quilliam
patent: 4443730 (1984-04-01), Kitamura et al.
patent: 4486869 (1984-12-01), Carter
New Methods of Ultrasonoscopy and Ultrasonography by Ernst et al. J. of Acoustical Society of America V. 24 N. 2 Mar. 1952 pp. 207-210.
Piezoelectric Polymers Properties and Potential Applications 1977 Ultrasonic Symposium Proceedings pp. 344-346 by Masahiko Tamura.

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