Differential charge amplifier for marine seismic applications

Details Differential charge amplifier for marine seismic applications Differential charge amplifier for marine seismic applications

1974-01-08

1976-02-17

Farley, Richard A.

Communications: electrical

Selective

Having indication or alarm

340 17, 330 7, G01V 100

Patent

active

039394689

ABSTRACT:
A differential charge amplifier for use in towed marine seismic streamers and the like involving towed hydrophone arrays wherein the hydrophone outputs are conducted by long twisted pairs of leads to signal processing equipment, the differential charge amplifier including operational amplifiers connected to form charge amplifier stages having resistance-capacitance feedback circuits and a differential amplifier stage coupled to the charge amplifier outputs providing cancellation of common mode signals.

REFERENCES:
patent: 2465696 (1949-03-01), Paslay
patent: 3371739 (1968-03-01), Pearson

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