Permeable corrector for deflection yokes

Details Permeable corrector for deflection yokes Permeable corrector for deflection yokes

1980-06-30

1981-12-22

Broome, Harold

Electricity: magnetically operated switches, magnets, and electr

Magnets and electromagnets

Electron or ion beam deflecting type

335210, H01F 312

Patent

active

043073638

ABSTRACT:
In a color television receiver having an in-line electron beam kinescope and deflection yoke, a correction apparatus comprises a pair of magnetically permeable field formers located on opposite sides of the yoke. A first portion of each field former lies within the external field of the vertical deflection coils and channels flux from the external field into the field formers. A second portion of each field former is configured to form a pair of feet located above and below the longitudinal axis of the kinescope. Flux channelled into the field formers is directed by the feed to form a pincushion-shaped field within the kinescope neck to correct vertical coma errors. A third portion of each field former lies forward of the feet and directs the channelled flux to form a barrel-shaped field within the kinescope neck to correct any misconvergence of the outer electron beams caused by the coma correcting field. In one embodiment, the field formers are coupled to a front crossarm assembly to provide both correction of coma errors and side pincushion distortion.

REFERENCES:
patent: 4237437 (1980-12-01), Vink et al.
patent: 4257023 (1981-03-01), Kamijo

Affiliated with

Also associated with

Rating

Permeable corrector for deflection yokes does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Permeable corrector for deflection yokes, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Permeable corrector for deflection yokes will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2370122