Fluorescent replacement LED lamps
US9504122B2 · kind B2 · utility
0Cited by
0References
18Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Mar 7, 2016 |
| Grant date | Nov 22, 2016 |
| Priority date | — |
| Expiry date | Mar 7, 2036 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02B20/30
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A light emitting diode (LED) lamp circuit is adapted to replace a fluorescent lamp in a fluorescent light fixture without having to modify the fluorescent light fixture in any way. The LED light string and its associated drive circuitry may be divided into two symmetric light strings. Furthermore, the two strings (power rails more precisely) may be tied together with a diode voltage/current steering system. The fluorescent replacement LED lamp design ‘spoofs’ all fluorescent lamp drive modes that a ballast could be configured for.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.