Circuit arrangement for compensating interference signals in...

Details Circuit arrangement for compensating interference signals in... Circuit arrangement for compensating interference signals in...

2006-12-05

2006-12-05

Olsen, Kaj K. (Department: 1753)

Electrolysis: processes, compositions used therein, and methods

Electrolytic analysis or testing

For oxygen or oxygen containing compound

C204S406000, C204S425000, C123S694000

Reexamination Certificate

active

07144494

ABSTRACT:
A compensation circuit (KS) is provided between the output of a differential amplifier (Diff_Amp) and the input of a controller (R). The compensation circuit generates a compensation signal, whose characteristic curve approximates to that of the parasitic signal, with the same amplitude and frequency (Phi1) as the parasitic signal, but by 180 DEG out of phase. The compensation signal is subtracted from the differential signal (DELTA Vs) and allows the parasitic signal to be eliminated to a great extent.

REFERENCES:
patent: 3906381 (1975-09-01), Bennett
patent: 6289719 (2001-09-01), Bloemer et al.
patent: 197 22 872 (1998-03-01), None
patent: WO99/18429 (1999-04-01), None
Diefenderfer, Principles of Electronic Instrumentation, 2nd edition, Saunders College Publishing, pp. 37-41, 222, 223, 1979.
Abstract for JP 09-065480, Jul. 1997.

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