Convergence unit for in-line color cathode ray tube

Details Convergence unit for in-line color cathode ray tube Convergence unit for in-line color cathode ray tube

1982-12-29

1983-10-25

Harris, George

Electricity: magnetically operated switches, magnets, and electr

Magnets and electromagnets

Electron or ion beam deflecting type

335212, H01F 700

Patent

active

044121946

ABSTRACT:
A convergence unit for an in-line color cathode ray tube consists of four E-cores located around the neck of the CRT. Each E-core, preferably consisting of strip-shaped soft-magnetic material such as mumetal or permalloy, carries two coils connected so that the net magnetic field at the central beam is zero. The E-cores are arranged in paris with the resultant fields at the nearer electron beam due to each individual E-core being substantially orthogonal to one another.

REFERENCES:
patent: 3325675 (1977-06-01), Sanford
patent: 3743984 (1973-07-01), Takenaka et al.
patent: 3858134 (1974-12-01), Budd
patent: 4034324 (1977-07-01), Sano et al.
IBM Technical Disclosure Bulletin, vol. 24, No. 2, Jul. 1981, pp. 1061-1062.
Soviet Inventions Illustrated, vol. R45, 30th Apr. 1980, No. C7202C/12, London.

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