High frequency electronic ballast
US6686703B2 · kind B2 · utility
2Cited by
9References
12Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 10, 2002 |
| Grant date | Feb 3, 2004 |
| Priority date | — |
| Expiry date | Feb 10, 2022 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02B20/00
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An improved high frequency ballast is disclosed. The high frequency ballast establishes a lamp current for a gas discharge lamp during a starting operation of the gas discharge lamp wherein an operating ampere level of the lamp current facilitates a substantial achievement by the gas discharge lamp of a color specification associated with the gas discharge lamp. Thereafter, during a stable operation of the gas discharge lamp, the high frequency ballast applies a frequency modulation to an operating frequency of the lamp current and/or an amplitude modulation of the lamp current.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.