Air-gap hydrophone

Details Air-gap hydrophone Air-gap hydrophone

1989-09-14

1991-07-16

Steinberger, Brian S.

Communications, electrical: acoustic wave systems and devices

Signal transducers

Underwater type

367165, 367166, 367152, H04R 1700

Patent

active

050330322

ABSTRACT:
A hydrophone for the detection of sound or vibrational waves, comprising a piezo electric transducer within a Faraday cage such that it is in contact with and yet isolated from a deformable pressure transmitting medium that carries vibrations. The Faraday cage reduces noise interference. The deformable medium is usually a fluid and preferably a vegetable oil, but can also include a silastic compound couple. One side of the Faraday cage is a ground plane of a surface-mount printed circuit board. Components of an electronic circuit for conditioning the signal are mounted on the printed circuit board and include a buffer having an ultra-high impedance input and a very low impedance output. The circuit has a low power draw and is powered by a replaceable battery.

REFERENCES:
patent: 3150346 (1964-09-01), Polly
patent: 3239801 (1966-03-01), McGaughey
patent: 3331970 (1967-07-01), Dundon et al.
patent: 3961305 (1976-06-01), Green
patent: 4010441 (1977-03-01), Richard
patent: 4134097 (1979-01-01), Cowles
patent: 4706226 (1987-11-01), Houghtaling
Applications for the Si1000 Series JFET Amplifier, pp. 7-25 to 7-30, FET Date Book, Published by Siliconix Incorporated, Jan. 1986.

Affiliated with

Also associated with

Rating

Air-gap hydrophone does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Air-gap hydrophone, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Air-gap hydrophone will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-137408