Controllers, systems and methods for controlling dimming of light sources
US8508150B2 · kind B2 · utility
56Cited by
34References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 7, 2011 |
| Grant date | Aug 13, 2013 |
| Priority date | — |
| Expiry date | Mar 7, 2031 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02B20/30
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A controller for controlling dimming of an LED light source includes a control terminal and dimming control circuitry coupled to the control terminal. The control terminal provides a driving signal to control a control switch coupled to the LED light source, thereby controlling the dimming of the LED light source. The dimming control circuitry generates the driving signal according to a set of operations of a power switch that transfers an AC signal. The dimming control circuitry further adjusts the driving signal by counting multiple waves of the AC signal to control the dimming of the LED light source.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.