Method and apparatus for adjusting the static convergence and purity of color television tubes
US4641062A · kind A · utility
8Cited by
5References
2Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Oct 17, 1985 |
| Grant date | Feb 3, 1987 |
| Priority date | — |
| Expiry date | Oct 17, 2005 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01J9/44
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An apparatus for adjusting the static convergence and/or the purity of a color television tube particularly of the kind having a perforated mask. A magnetizable ring encircles the neck of the tube. Poles are formed in this ring by means of coils displaceable in such manner that these coils and/or their cores are applied against the periphery of the magnetizable ring. The application of the coils or of their cores against the ring renders constant the relationship between the current supplied to these coils and the intensity of magnetization obtained.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.