Drive system for illumination device
US8242706B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 24, 2009 |
| Grant date | Aug 14, 2012 |
| Priority date | — |
| Expiry date | Sep 25, 2030 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02B20/30
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A drive system for an illumination device includes a plurality of LEDs; an extra load; an illumination setting unit, for providing an illumination parameter such as a work cycle; a power supply unit, for providing a DC current; a microprocessor, for receiving the illumination parameter and generating a plurality of drive signals and a compensation signal according to the received illumination parameter; a plurality of first drive units, for driving the LEDs to receive the DC current in the high-level cycle for illumination; and a second drive unit, for receiving the compensation signal and outputting the DC current to the extra load according to the compensation signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.