Title: Differential charge amplifier for marine seismic applications

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.

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Inventors: Mastin, Robert H. (Dallas, TX, US)

Application Number: 431723
Filing Date: 1974-01-08
Publication_date: 1976-02-17
Assignee: Whitehall Corporation (Richardson, TX)
Primary Class(es): 367/22 330/7, 367/65
Other Classes:
US Patent Ref:

2465696	Mar, 1949	Paslay	340/7.
3371739	Mar, 1968	Pearson	340/7.

Other Refs:
Primary Examiner: Farley, Richard A.
Assistant Examiner: Buczinski, S. C.
Attorney: Mason, Fenwick & Lawrence