Process for the determination of electrical values without conta

Details Process for the determination of electrical values without conta Process for the determination of electrical values without conta

1997-11-21

1999-09-28

Karlsen, Ernest F.

Electricity: measuring and testing

Measuring, testing, or sensing electricity, per se

Magnetic saturation

324149, G01R 106

Patent

active

059594497

ABSTRACT:
A method for determining electrical measurement variables (e.g. DC or AC voltages or currents, powers or resistances) without physically contacting a conductor (1) includes at least two coil systems (6) arranged at a distance from one another. The coil systems (6) are positioned in the electromagnetic field of the conductor (1). The coils (6) and/or an electrically conductive component (3) in the vicinity of the coils (6) are set into periodic mechanical oscillation for the determination of DC voltages and/or direct currents. Consequently, determination of electrical measurement variables is achieved without physically contacting an electrical conductor which cannot be completely surrounded.

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IBM Technical Disclosure Bulletin, vol. 10, No. 7, Dec. 1967; "Amplification of Extremely Low DC Currents and Voltages".
IEEE Transactions on Magnetics, vol. 26, No. 5, Sep. 1990; "300 A Current Sensor Using Amphorous Wire Core"; Kashiwagi et al.

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