Thermal protection for lamp ballasts
US7675250B2 · kind B2 · utility
22Cited by
19References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 18, 2006 |
| Grant date | Mar 9, 2010 |
| Priority date | — |
| Expiry date | Jan 6, 2029 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH05B41/2986
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
The output current of a ballast is dynamically limited when an over-temperature condition is detected in the ballast according to one of (i) a step function or (ii) a combination of step and continuous functions, so as to reduce the temperature of the ballast while continuing to operate it.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.