Hydrophone preamplifier

Details Hydrophone preamplifier Hydrophone preamplifier

1995-04-21

1996-04-02

Pihulic, Daniel T.

Communications, electrical: acoustic wave systems and devices

Receiver circuitry

G01S 1500

Patent

active

H00015261

ABSTRACT:
A hydrophone preamplifier design utilizing hybrid integrated circuits, surface mounted components, multi-layered circuit boards and gain switching. Acoustic signals from a sensor are applied to a hybrid integrated circuit preamplifier whose gain is controlled by a relay activated remotely from a control that allows a predetermined attenuation permitting measurements of high sound pressure levels (low gain) or low ambient noise levels (high gain). The preamplifier in the hybrid integrated circuit provides a gain of 10 (20 dB) and an additional gain of 10 is provided by a low-noise operational amplifier (op amp). A current booster provides the output current drive capability for the preamplifier which is capable of driving large capacitive loads and has protection against both electrical and thermal overloads. Insertion calibration is provided through an ac current signal supplied by an external source, which develops a small voltage signal when supplied to the preamplifier. The voltage signal is coupled through an acoustic sensor to the preamplifier input providing a complete loop-back system test.

Affiliated with

Also associated with

Rating

Hydrophone preamplifier does not yet have a rating. At this time, there are no reviews or comments for this patent.

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

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2008183