Control of bleed current in drivers for dimmable lighting devices
US8581498B1 · kind B1 · utility
12Cited by
1References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 10, 2012 |
| Grant date | Nov 12, 2013 |
| Priority date | — |
| Expiry date | Jul 11, 2032 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH05B45/3725
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
Methods and apparati for controlling bleed current (IBLEED) in a driver circuit (20) for a lighting device (23). A method embodiment of the present invention comprises the steps of coupling a dimmer (21) to an input of the driver circuit (20), and forcing the bleed current (IBLEED) to be inversely proportional to the time-averaged voltage (VLEDP) at said lighting device (23). The dimmer (21) consumes power even when the lighting device (23) is not emitting light.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.