Omni-directional electric current perturbation probe

Details Omni-directional electric current perturbation probe Omni-directional electric current perturbation probe

2008-05-06

2008-05-06

Assouad, Patrick (Department: 2862)

Electricity: measuring and testing

Magnetic

With means to create magnetic field to test material

C324S228000, C324S234000, C324S239000, C324S240000

Reexamination Certificate

active

11488295

ABSTRACT:
An electric current perturbation probe includes at least one driver coil and at least one receiver. The at least one driver coil produces an omni-directional magnetic field. The at least one receiver is decoupled from the omni-directional magnetic field. In one example, the at least one driver coil includes a first driver coil that defines a first effective coil axis which is positioned orthogonally to a second effective coil axis of a second driver coil. The first driver coil is provided with a first electrical excitation signal which is phase shifted by 90 degrees from a second electrical excitation signal used to drive the second driver coil.

REFERENCES:
patent: 4430615 (1984-02-01), Calvert
patent: 5754043 (1998-05-01), Logue
patent: 6040695 (2000-03-01), Raulerson et al.
patent: 6888347 (2005-05-01), Batzinger et al.
patent: 2780510 (1999-12-01), None
patent: 2002131285 (2002-05-01), None

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