Remnant field detector

Details Remnant field detector Remnant field detector

1986-11-24

1988-05-03

Kyle, Deborah L.

Electricity: measuring and testing

Magnetic

With means to create magnetic field to test material

324260, G01N 2772

Patent

active

H00004715

ABSTRACT:
A method apparatus for qualitatively detecting remnant magnetic fields in matched pairs of magnet cores. Equal magnitude and oppositely oriented magnetic flux is induced in the magnet cores by oppositely wound primary windings and current source. Identically wound secondary windings generate output voltages in response to the induced flux. The output voltages generated should be of equal magnitude and opposite polarity if there is no remnant field in the cores. The output voltages will be unequal which is detected if either core has a remnant field.

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