Matching amplifier having an extremely high input resistance for

Details Matching amplifier having an extremely high input resistance for Matching amplifier having an extremely high input resistance for

1997-12-15

2000-09-26

Snow, Walter E.

Electricity: measuring and testing

Of geophysical surface or subsurface in situ

By magnetic means

324258, G01R 3302, G01V 300, G01V 308

Patent

active

061247138

ABSTRACT:
A matching amplifier for an induction probe which detects low-frequency alternating magnetic fields of floating bodies propagating in water. The matching amplifier has an isolating amplifier and a frequency response-determining network, with the network being provided with a frequency pass region having a band-pass characteristic and an integrating response in the band pass for the purpose of canceling the decorrelation of the measuring values emitted by the induction probe, with the integrating response being matched to compensate for the decorrelation of the measuring signal of the induction probe generated by the differentiating effect of the induction probe.

REFERENCES:
patent: 3126510 (1964-03-01), McLaughin et al.
patent: 3471777 (1969-10-01), Rona
patent: 4703266 (1987-10-01), Chiron et al.
patent: 5150051 (1992-09-01), Fiedman et al.
patent: 5512823 (1996-04-01), Nepveu

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