Control circuit and method for controlling LEDs
US8098028B2 · kind B2 · utility
2Cited by
3References
24Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jun 20, 2007 |
| Grant date | Jan 17, 2012 |
| Priority date | — |
| Expiry date | Feb 5, 2028 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH05B45/46
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A control circuit for control of light-emitting diodes has a first LED string (50) with at least one LED (51, 52, 53) and a first supply device (1) for supply of current to the first LED string (50). The supply device (1) has a control input (10) for delivery of a first control signal (CTL) and is provided for delivery, as desired, of a first supply current (IV1) or a second supply current (IV2) in dependence on the first control signal (CTL). The first and the second control currents (IV1, IV2) are non-zero.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.