Deflection unit for a cathode-ray tube

Details Deflection unit for a cathode-ray tube Deflection unit for a cathode-ray tube

1979-02-09

1981-04-07

Broome, Harold

Electricity: magnetically operated switches, magnets, and electr

Magnets and electromagnets

Electron or ion beam deflecting type

335210, H01F 700

Patent

active

042609747

ABSTRACT:
In cathode-ray tubes which require a precise specific electromagnetic deflection field configuration as for example, in self-converging color television picture tubes, an accurate distribution of the coil windings has to be maintained on the inside of the deflection unit. In practice, this requirement has been met with the aid of toroidal coil windings, but with respect to the more sensitive saddle-type coils this problem has not yet been solved satisfactorily, especially when large numbers of winding turns are to be accommodated. With respect to saddle-type coils the invention proposes to solve this problem by placing the windings into grooves.

REFERENCES:
patent: 3895329 (1975-07-01), Logan et al.
patent: 4065738 (1977-12-01), Elders et al.
patent: 4117432 (1978-09-01), Shizu

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