Offset and low frequency noise insensitive magnetic sensor

Details Offset and low frequency noise insensitive magnetic sensor Offset and low frequency noise insensitive magnetic sensor

2005-02-01

2005-02-01

Patidar, Jay (Department: 2862)

Electricity: measuring and testing

Magnetic

Magnetometers

C327S510000

Reexamination Certificate

active

06850058

ABSTRACT:
The invention provides an offset and low frequency noise insensitive magnetic sensor which incorporates a magnetic field effect transistors (MagFETs). Methods of improving the signal to noise ratio and reducing errors from offsets when measuring magnetic fields using MagFETs are also described. The invention also provides for the use of such methods and sensor in circuitry adapted to provide for residual current detection.

REFERENCES:
patent: 4681440 (1987-07-01), Burke et al.
patent: 5760581 (1998-06-01), Kalb, Jr.
patent: 5801533 (1998-09-01), Kalb, Jr.
Baltes, Henry P.Integrated Semiconductor Magnetic Field Sensors, Proceedings of The IEEE, vol. 74, No. 8, p. 1107-1131, 1986.

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