Deflection yoke for a color cathode ray tube
US4882521A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | May 18, 1988 |
| Grant date | Nov 21, 1989 |
| Priority date | — |
| Expiry date | May 18, 2008 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01J2229/5687
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A deflection yoke has magentic field correcting auxiliary yokes (5) disposed at the flare side end of the insulative bobbin (2) for holding a pair of horizontal deflection coils (3) and a pair of vertical deflection coils (4), each magnetic field correcting auxiliary yokes (5) comprising a long and slender arc shaped core (6) disposed along the end portion of either of the horizontal deflection coils (4) or the vertical deflection coils (4) and a pair of auxiliary coils (8R, 8L) which are wound on the core (6) and connected in series to the vertical deflection coils (4); and thereby the raster distortion and mis-convergence are substantially reduced.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.