Apparatus for cancelling leakage magnetic field

Details Apparatus for cancelling leakage magnetic field Apparatus for cancelling leakage magnetic field

1987-12-01

1989-02-21

Harris, George

Electricity: magnetically operated switches, magnets, and electr

Magnets and electromagnets

Electron or ion beam deflecting type

335304, 361146, H01F 500

Patent

active

048068942

ABSTRACT:
A leakage magnetic field cancelling apparatus comprises a magnetic field generating apparatus and a cancelling coil arranged around the magnetic field generating apparatus. By allowing a direct current to flow through the coil, a magnetic field is generated therefrom. The leakage magnetic field generated from the magnetic field generating apparatus is cancelled or controlled by the magnetic field generated from the coil. Thus, the cancelling apparatus can be realized by a cheap and light coil made of a copper wire or the like.

REFERENCES:
patent: 2217409 (1940-10-01), Hepp
patent: 2234038 (1941-03-01), Bedford et al.
patent: 2748305 (1956-05-01), Davies
patent: 3824515 (1974-07-01), Holman
patent: 4152745 (1979-05-01), Eul

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