Electromagnetic deflection unit and color display tube provided

Details Electromagnetic deflection unit and color display tube provided Electromagnetic deflection unit and color display tube provided

1984-09-18

1985-08-13

Harris, George

Electricity: magnetically operated switches, magnets, and electr

Magnets and electromagnets

Electron or ion beam deflecting type

335210, 313431, H01F 100

Patent

active

045353131

ABSTRACT:
An electromagnetic deflection unit has a conical coil holder with a flange which carries coils for the horizontal deflection of electron beams. The coils have segments extending substantially in the longitudinal direction of the coil holder and near these segments are arranged soft-magnetic members on the inwardly directed side of the coils in order to influence the magnetic field of these coils and hence to reduce convergence errors. The soft-magnetic members are incorporated, in a configuration suitable for the relevant type of deflection unit, in a moulded annular body of synthetic material.

REFERENCES:
patent: 3191104 (1965-06-01), Mak
patent: 4231009 (1980-10-01), Barkow
patent: 4242612 (1980-12-01), Heijnemans et al.
patent: 4396897 (1983-08-01), Sluijterman et al.

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