LED light source
US9210757B2 · kind B2 · utility
8Cited by
2References
10Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 30, 2012 |
| Grant date | Dec 8, 2015 |
| Priority date | — |
| Expiry date | Dec 1, 2032 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02B20/30
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A string of LED loads is supplied by means of a rectified mains voltage. A cathode of each LED load is coupled to ground by means of a string. The strings are made conductive and non-conductive one by one in dependency of the instantaneous value of the rectified mains using both voltage and current sensing.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.