Ballast with temperature compensation
US9119275B2 · kind B2 · utility
0Cited by
10References
16Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 11, 2013 |
| Grant date | Aug 25, 2015 |
| Priority date | — |
| Expiry date | Oct 11, 2033 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH05B41/3925
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A ballast for driving a gas discharge lamp includes an inverter configured to generate a lamp supply voltage signal, and a voltage regulator coupled to the inverter and configured to generate a regulation signal. The regulation signal is used by the inverter to maintain the lamp voltage signal at a substantially constant voltage. A thermistor circuit is coupled between the lamp supply voltage signal and the voltage regulator and configured to detect a temperature of the ballast. The lamp supply voltage signal is varied by the regulation signal in accordance with the detected temperature of the ballast.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.