Magnetic device

Details Magnetic device Magnetic device

1986-10-10

1988-09-27

Eisenzopf, Reinhard J.

Electricity: measuring and testing

Measuring, testing, or sensing electricity, per se

With electromagnetic field

324140D, 324151R, 324207, 335229, G01R 516, G01R 120

Patent

active

047744588

ABSTRACT:
A first magnet is mounted for rotation near a cavity of a magnetizable body such that the first magnet has a null position influenced by magnetic interaction between said first magnet and at least two pole pieces of the magnetizable body. The magnetizable body has a core associated with a source of magnetic energy to induce magnetism within the core and the pole pieces and thereby alter the null position of the first magnet. Various embodiments of the invention include: analog meter mechanisms; actuators; transducers; proximity and position indicators; and other devices.

REFERENCES:
patent: 2836773 (1958-05-01), Skrobisch
patent: 3428867 (1969-02-01), Becker
patent: 3585550 (1971-06-01), Dorsch
patent: 3891922 (1975-06-01), Atzinger
patent: 4222021 (1980-09-01), Bunker
patent: 4302720 (1981-11-01), Brill
Herrick: "Instruments and Measurements for Electronics", pp. 18-21, McGraw-Hill, 1972.
Reitz et al., "Foundations of Electromagnetic Theory", pp. 191-193, Addisson-Wesley, ca. 1965.

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