Magnetic field generators for use in electromagnetic focusing ty

Details Magnetic field generators for use in electromagnetic focusing ty Magnetic field generators for use in electromagnetic focusing ty

1981-11-09

1983-03-08

Harris, George

Electricity: magnetically operated switches, magnets, and electr

Magnets and electromagnets

Electron or ion beam deflecting type

335217, H01F 312

Patent

active

043762727

ABSTRACT:
In a magnetic field generator mounted about a neck of a cathode ray tube for focusing an electron beam and made up of a permanent magnet, a magnetic field adjusting mechanism for adjusting field intensity produced by the permanent magnet and a magnetic member adapted to compensate for a temperature characteristic of the permanent magnet, the temperature characteristic compensating member is located at a position not affected by magnetic flux adjusted by the magnetic field adjusting mechanism.

REFERENCES:
patent: 3623151 (1971-11-01), Ikeuchi
patent: 3831051 (1974-08-01), Ohgoshi et al.
patent: 3873877 (1975-03-01), Machida et al.
patent: 4023128 (1977-05-01), Itou et al.

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