LED lighting drive circuit
US9485821B2 · kind B2 · utility
1Cited by
2References
10Claims
0Family size
Assignees
Inventors
Key dates
| Filing date | Jul 21, 2014 |
| Grant date | Nov 1, 2016 |
| Priority date | — |
| Expiry date | Jul 21, 2034 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02B20/30
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An LED lighting drive circuit supplies power for N groups of LED loads. The LED lighting drive circuit comprises N current paths, N groups of LEDs, and a constant current section. The LED lighting drive circuit enables the current of LED lamps to change in a sinusoidal half-wave form with the utility AC input, and keeps the current a constant effective value.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.