Method and apparatus for dimming high intensity discharge lamps
US8917036B1 · kind B1 · utility
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5References
20Claims
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Key dates
| Filing date | Aug 20, 2013 |
| Grant date | Dec 23, 2014 |
| Priority date | — |
| Expiry date | Aug 20, 2033 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH05B41/42
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A method for operating a HID lamp using a bi-power electromagnetic ballast. The method includes applying a full power level to the lamp to produce full brightness and applying a dimmed power level to the lamp to produce a dimmed brightness. The lamp may be dimmed by switching the lamp power from the full power level to the dimmed power level and then applying a full power pulse to the lamp. The dimmed power level is less than the full power level.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.