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US H1,528 HGranted
Hydrophone preamplifier control unit
AssigneeUnited States of America
InventorsMichael T. McCord, Larry E. Ivey
Life of this patent
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Abstract
A hydrophone preamplifier control unit provides for front panel controls and cable connectors for applying a calibration current and operating voltage to the hydrophone, controlling the level of these voltages, and monitoring the operation of the hydrophone. The control unit assures the continuity of the electrical circuits to a hydrophone through the use of a calibration current applied to the hydrophone through the use of a calibration current applied to the hydrophone through an interconnecting cable.
Claims4
A hydrophone preamplifier control unit comprised of:
- a power supply having a 12 volt DC and 24 v DC output;
- means for adjusting the 24 volt DC output of the power supply to compensate for losses in the power supply;
- means for applying a calibration voltage;
- means for generating a calibration current from the applied calibration voltage that is applied to a hydrophone preamplifier;
- and
- means for monitoring the calibration current applied to the hydrophone preamplifier.
3 more elements
Dependencies are inferred from the claim text.