Method for adjusting crystal hydrophone output

Details Method for adjusting crystal hydrophone output Method for adjusting crystal hydrophone output

1993-02-03

1994-03-29

Eldred, J. Woodrow

Communications, electrical: acoustic wave systems and devices

Testing, monitoring, or calibrating

367191, 29 2535, 29594, 73 1DV, H04B 1700

Patent

active

052991725

ABSTRACT:
A method for precisely adjusting the sensitivity of a polarized crystal hydrophone by applying a voltage signal to the hydrophone. Voltage pulses having selected characteristics are repeatedly applied to the crystal until it is determined that the sensitivity of the crystal has reached a desired level.

REFERENCES:
patent: 3763530 (1973-10-01), Helfen
patent: 3930216 (1975-12-01), Hall, Jr.
patent: 4055878 (1977-11-01), Radice
patent: 4356424 (1982-10-01), Marcus
patent: 4459634 (1984-07-01), Stefanou

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