Circuits and methods for driving light sources
US9386653B2 · kind B2 · utility
31Cited by
48References
6Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 4, 2013 |
| Grant date | Jul 5, 2016 |
| Priority date | — |
| Expiry date | Jul 9, 2034 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02B20/30
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A driving circuit for driving a light source having an adjustable color temperature is provided. The driving circuit includes a power converter, coupled between a power source and the light source and operable for receiving power from the power source and for providing a regulated power to the light source; and a color temperature controller, coupled to the power converter and operable for receiving a switch monitoring signal indicative of an operation of a power switch coupled between the power source and the power converter, and for adjusting the color temperature of the light source based on the switch monitoring signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.