Electricity: magnetically operated switches – magnets – and electr – Magnets and electromagnets – Electron or ion beam deflecting type
Patent
1980-02-25
1982-06-15
Broome, Harold
Electricity: magnetically operated switches, magnets, and electr
Magnets and electromagnets
Electron or ion beam deflecting type
335214, H01F 312, H01F 700
Patent
active
043353665
ABSTRACT:
In a television receiver comprising a display system incorporating a kinescope having horizontal in-line electron beams and also incorporating a deflection yoke having toroidally-wound vertical deflection coils, where the kinescope utilizes a magnetically-permeable G3 focussing electrode in the electron guns to reduce deflection defocussing, an arrangement for correcting misconvergence of the electron beams caused by the magnetically-permeable G3 electrode comprises a pair of magnetically-permeable field formers disposed along and extending toward the rear of the yoke. The field formers are configured to collect a portion of the external fields generated by the vertical windings and direct those portions through the kinescope neck substantially at right angles to the electron beams in the vicinity of the exit end of the electron guns with a barrel-shaped transverse pattern.
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Alig Roger C.
Barkow William H.
Gross Josef
Broome Harold
Rasmussen P. J.
RCA Corporation
Stevens S. J.
Whitacre E. M.
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