FIELD: electronics.
SUBSTANCE: invention relates to nondestructive detection of anomalies in electroconductive materials. Essence of invention consists in that differential sensor for detecting anomalies in electroconductive materials comprises a permanent magnet; first coil with one or more first windings wound around permanent magnet and defining first axis of coils, and second coil with one or more second windings wound around permanent magnet and defining a second axis of coils running across first axis of coils.
EFFECT: technical result is high accuracy of detecting anomalies in electroconductive materials.
13 cl, 8 dwg
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