Magnetic deflector for trichromatic tube with shield and method

Details Magnetic deflector for trichromatic tube with shield and method Magnetic deflector for trichromatic tube with shield and method

1987-09-28

1989-06-13

Blum, Theodore M.

Electric lamp and discharge devices: systems

Cathode ray tube circuits

Cathode-ray deflections circuits

315370, 315371, 335214, 313428, H01J 2970, H01J 2976

Patent

active

048395684

ABSTRACT:
A magnetic deflector of the saddle-saddle type, for a trichromatic tube protected by a shield, with in-line guns and round-luminophor type screen, is designed to function with a saddle-torus type of magnetic deflector. The invention uses a saddle-saddle type of deflector in which the front leading-out wires have been reduced and the rear leading-out wires are laid flat. Furthermore, the ferrite piece is extended by a ring which surrounds the rear leading-out wires and is magneticlaly closed by a ferrite ring bearing a quadrupole coil powered by a parabolic current. The intention can be applied to round-luminiphor trichromatic tubes fitted with an external shield.

REFERENCES:
patent: 3912970 (1975-10-01), Chandler et al.
patent: 4257024 (1981-03-01), Shimoma et al.
patent: 4524308 (1985-06-01), Suzuki
patent: 4700164 (1987-10-01), Roussel

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