High efficiency dimmable cold cathode fluorescent lamp ballast
US6011360A · kind A · utility
76Cited by
8References
24Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 18, 1997 |
| Grant date | Jan 4, 2000 |
| Priority date | — |
| Expiry date | Sep 18, 2017 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH05B41/3921
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A ballast including an inverter and a circuit having a resonant frequency coupled to the output of the inverter. In one embodiment of the invention, the only discrete type of element substantially affecting the resonant frequency is substantially inductive in electrical character. In this embodiment of the invention, there is also no discrete ballasting element in series with the lamp load. The reduction in discrete elements reduces both power consumption and costs associated with the ballast.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.