Eddy current sensor

Details Eddy current sensor Eddy current sensor

1974-03-28

1976-01-13

Smith, Alfred E.

Electricity: measuring and testing

Electrical speed measuring

Including speed analog electrical signal generator

324173, 73229, G01P 346

Patent

active

039328139

ABSTRACT:
An E-shaped magnetic core with a sensing coil wound around each outer leg, these coils being connected in series and the center leg made of a magnet to establish a symmetrical magnetic field. When a conductive but non-magnetic material is passed through the flux field established in the air gap between the center and outer legs, eddy currents are induced in the material which oppose and momentarily change the magnetic field inducing a detectable voltage in the coils.

REFERENCES:
patent: 2705303 (1955-03-01), Stinger
patent: 3065412 (1962-11-01), Rosenthal

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