Driving circuit with dimming controller for driving light sources
US8378589B2 · kind B2 · utility
124Cited by
28References
17Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 27, 2011 |
| Grant date | Feb 19, 2013 |
| Priority date | — |
| Expiry date | May 27, 2031 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02B20/30
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A dimming controller for controlling dimming of a light-emitting diode (LED) light source includes a monitoring terminal and a control terminal. The monitoring terminal receives a switch monitoring signal indicative of an operation of a power switch which transfers power from an AC power source to a bridge rectifier when the power switch is on. A power converter receives input power from the bridge rectifier and provides output power to the LED light source. The control terminal generates a control signal to adjust the output power according to the switch monitoring signal so as to control dimming of the LED light source.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.