Electricity: measuring and testing – Magnetic – With compensation for test variable
Patent
1984-08-20
1987-07-28
Eisenzopf, Reinhard J.
Electricity: measuring and testing
Magnetic
With compensation for test variable
324252, 307309, G01N 2772, G01R 3302, H03K 1790, H03K 1918
Patent
active
046834290
ABSTRACT:
A circuit including a magnetic sensing device for measuring magnetic fields is disclosed. The output of the magnetic sensing device is amplified by an amplifier and feedback to the magnetic sensing device. A potentiometer comprising two resistors R.sub.1 and R.sub.2 is connected between the output of the amplifier and ground. The feedback signal is taken from the common terminal of the two resistors. When circuit parameters are appropriately chosen, a magnetic field measuring circuit which is linearly responsive to changes in magnetic field intensity and relatively temperature independent results.
REFERENCES:
patent: 3267368 (1966-08-01), Varian
patent: 3416010 (1968-12-01), Kuhnlein et al.
patent: 4100563 (1978-07-01), Clark
patent: 4449081 (1984-05-01), Doeman
Eisenzopf Reinhard J.
LGZ Landis & Gyr Zug AG
Snow Walter E.
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