Weak-field magnetic field sensor having etched circuit coils

Details Weak-field magnetic field sensor having etched circuit coils Weak-field magnetic field sensor having etched circuit coils

1995-12-27

1999-08-10

Patidar, Jay M.

Electricity: measuring and testing

Magnetic

Magnetic field detection devices

324234, 324239, 324262, 336200, G01R 3300

Patent

active

059364033

ABSTRACT:
The subject of the invention is a weak-field magnetic sensor with the following features: etched circuit coils are substituted for conventional coil technology. The sensor includes an amorphous core having epoxy bases stacked relative to one another on the top and bottom surfaces thereof. One epoxy base has a coil Y etched thereon. A second epoxy base has a coil X etched thereon. The remaining epoxy base has circular patterns etched thereon. The amorphous core is formed from at least two amorphous thin boards stacked on opposite sides of an epoxy base thin board. The epoxy base thin board has a particular pattern etched thereon and the capacity for vertical conductivity. The coil conductor size and position accuracy is controlled in increments of microns by the etching process. The range of detection errors and the level of reception has no non-uniformities. A thin and small sensor in terms of the structure is therefore enabled. Moreover, the sensor is not easily affected by outside factors such as broken wires. It is also capable of being mass produced.

REFERENCES:
patent: 4385273 (1983-05-01), Lienhard et al.
patent: 4613843 (1986-09-01), Esper et al.
patent: 5012190 (1991-04-01), Dossel
patent: 5600240 (1997-02-01), Mikhailovich et al.

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