Electricity: measuring and testing – Measuring – testing – or sensing electricity – per se – Magnetic saturation
Patent
1988-09-13
1991-08-20
Wieder, Kenneth
Electricity: measuring and testing
Measuring, testing, or sensing electricity, per se
Magnetic saturation
324117R, 324251, 338 32H, G01R 3300, G01R 3306
Patent
active
050417800
ABSTRACT:
A current conductor is provided with opposing notches to produce a restricted section and with magnetic flux sensors on opposite sides of the restricted current section. The flux sensors are connected to differential amplification circuitry. The restricted section increases the concentration of magnetic flux sensed, and the differential amplification circuitry eliminates the sensing of currents in external conductive paths. An electrostatic shield is provided between the shaped conductor and the magnetic flux sensors to elminate electrostatic effects on the output signal. The flux sensors and differential amplification circuitry is fabricated in an integrated circuit chip. For small currents, the shaped conductor may be deposited on the chip; otherwise a shaped conductor is formed and a mounting substrate of insulating material, such as ceramic, is used to support the integrated circuit chip on the shaped conductor with each of the two sensors centered respectively within the two opposite notches.
REFERENCES:
patent: 1810539 (1931-06-01), Sokoloff
patent: 3801907 (1974-04-01), Lilienstein
patent: 4262275 (1981-04-01), DeMarco et al.
patent: 4272724 (1981-06-01), Wada et al.
patent: 4283643 (1981-08-01), Levin
patent: 4539520 (1985-09-01), McBride
patent: 4559495 (1985-12-01), Lienhard
patent: 4580095 (1986-04-01), De Vries
patent: 4616174 (1986-10-01), Jorgenson
patent: 4639665 (1987-01-01), Gary
patent: 4692703 (1987-09-01), Extance et al.
patent: 4709205 (1987-11-01), Baurand et al.
patent: 4794326 (1988-12-01), Friedl
patent: 4823075 (1989-04-01), Alley
patent: 4894610 (1990-01-01), Friedl
Burns William J.
California Institute of Technology
Fernandez Antonio M.
Wieder Kenneth
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