Cathode-ray tube apparatus with means for reducing leakage magne

Details Cathode-ray tube apparatus with means for reducing leakage magne Cathode-ray tube apparatus with means for reducing leakage magne

1993-04-09

1995-07-04

Brinich, Stephen

Electric lamp and discharge devices

Cathode ray tube

Beam deflecting means

313413, H01J 152

Patent

active

054303516

ABSTRACT:
A deflection yoke is attached to the outer periphery of a boundary portion between a cone portion and the neck of a funnel of a cathode-ray tube. The deflection yoke has a pair of saddle-shaped horizontal deflection coils. A pair of short-circuit loop, upper and lower, each having at least one turn, and a ring-shaped auxiliary core, formed of ferrite, are arranged in the vicinity of the deflection yoke. Portions of the short-circuit loops and a lead wire, which is connected to the horizontal deflection coils, extend individually through a hole in the auxiliary core. The auxiliary core, the lead wire, and the portions of the short-circuit loops constitute a magnetic circuit for interlinking a magnetic flux generated from the lead wire with the short-circuit loops.

REFERENCES:
patent: 4634930 (1987-01-01), Toshiyasu et al.
patent: 4709220 (1987-11-01), Sakane et al.
patent: 4734620 (1988-03-01), Hemme
patent: 4853588 (1989-08-01), Ohtsu et al.
patent: 4914350 (1990-04-01), Bosch et al.
patent: 4975618 (1990-12-01), Koba et al.
patent: 5107179 (1992-04-01), Vidovich
patent: 5180947 (1993-01-01), McGill
patent: 5229689 (1993-07-01), Forsblad et al.
"VLMF Compensating Coil", IBM Technical Disclosures Bulleting, vol. 31, No. 11, Apr. 1989, pp. 126-127.

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