Electricity: measuring and testing – Measuring – testing – or sensing electricity – per se – Magnetic saturation
Patent
1988-08-19
1990-04-03
Eisenzopf, Reinhard J.
Electricity: measuring and testing
Measuring, testing, or sensing electricity, per se
Magnetic saturation
324253, 336214, G01R 3302, F02P 100
Patent
active
049143816
ABSTRACT:
A direct-coupled fluxgate current sensor which is driven to hard saturation to achieve a sudden change in magnetic properties of the sensor, has: (a) a first closed loop core of ferromagnetic material encased in a sleeve wound with a first toroidal drive winding, the winding for the first core extending around the circumference of the first core; (b) a second closed loop core of ferromagnetic material encased in a sleeve wound with a second toroidal drive winding independent of the first winding, the winding for the second core extending around the circumference of the second core; and, (c) a closed loop core casing which is adapted to cooperate with the first core and the second core, the closed loop core casing and the first and second core being wound as a unit with a toroidal sense winding independent of the first and second toroidal drive windings, the winding for the closed loop core casing extending around the circumference of the closed loop core casing.
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"Steady-State Characteristics of the Capacitively Loaded Flux Gate Sensor", B. Barry Narod and R. Doncaster Russell, IEEE Transactions on Magnetics, vol. MAG-20, No. 4, Jul. 1984.
"Characteristics of the Capacitively Loaded Flux Gate Sensor", R. Doncaster Russell, B. Barry Narod and Frank Kollar, IEEE Transactions on Magnetics, Vol. MAG-19, No. 2, Mar. 1983.
Barrigar & Oyen
Eisenzopf Reinhard J.
Nguyen Vinh P.
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