Electricity: measuring and testing – Magnetic – Magnetometers
Patent
1982-06-28
1985-03-19
Strecker, Gerard R.
Electricity: measuring and testing
Magnetic
Magnetometers
73517R, G01R 3302
Patent
active
045062218
ABSTRACT:
A dual-axis magnetometer employs an electromagnet mounted by bender arms within a housing to permit pivotal vibration of the electromagnet with respect to the housing. The electromagnet is driven by an alternating current that causes it to vibrate in the presence of an external magnetic field having a component in a plane perpendicular to the axis of the electromagnet. Output signals are provided at conductors on opposite surfaces of the benders. By observing the relative magnitudes of the output signals and the relationships of their phases with that of the excitation signal, it is possible to determine the direction of that component of the external magnetic field that lies in a plane perpendicular to the electromagnet axis.
REFERENCES:
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patent: 2984111 (1961-05-01), Kritz
patent: 3264554 (1966-08-01), Hayner et al.
patent: 3283590 (1966-11-01), Shang
patent: 3803546 (1974-04-01), Leon
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patent: 4306456 (1981-12-01), Maerfeld
Moore, David William, "Electronic Position Pickup," Electronics, Jan. 1947, pp. 100, 101.
Etlinger Louis
Sanders Associates Inc.
Seligman Richard I.
Strecker Gerard R.
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