Solid state lighting driver with THDi bypass circuit
US8669709B2 · kind B2 · utility
0Cited by
10References
18Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 24, 2011 |
| Grant date | Mar 11, 2014 |
| Priority date | — |
| Expiry date | Jul 12, 2032 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02B20/30
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A solid state lighting driver and system having a total harmonic distortion (“THDi”) bypass circuit is disclosed. The solid state driver energizes a solid state lamp having a first lighting segment serially connected to a second lighting segment. The THDi bypass circuit bypasses a first lighting segment and energizes a second lighting segment of LEDs when the driving voltage is low. As a result, the solid state lamp will emit light over a larger portion of the power cycle and will decrease the THDi.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.