Methods and apparatus employing apparent resonant properties of

Details Methods and apparatus employing apparent resonant properties of Methods and apparatus employing apparent resonant properties of

1984-06-27

1987-07-07

Eizensopf, Reinhard I.

Electricity: measuring and testing

Magnetic

With means to create magnetic field to test material

324226, 324227, 324207, 194317, 331117R, G01N 2772, G01R 3312

Patent

active

046789944

ABSTRACT:
Methods and apparatus for sensing, switching and modulating relying upon apparent resonant properties of thin conductive materials are provided in accordance with the teachings of the present invention. According to the present invention, an output of an oscillating circuit is selectively varied as a function of the relationship between a coil within the oscillating circuit, a thin conductive member and the apparent resonant condition of the thin conductive member to achieve appropriate sensing, switching and modulating conditions.

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