Method for starting a discharge lamp using high energy initial pulse
US6900600B2 · kind B2 · utility
18Cited by
7References
6Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 31, 2002 |
| Grant date | May 31, 2005 |
| Priority date | — |
| Expiry date | May 17, 2023 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02B20/00
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
The described DC to AC inverter efficiently controls the amount of electrical power used to drive a cold cathode fluorescent lamp (CCFL). The inverter uses a full bridge that is controlled to deliver energy to the CCFL using pulse width modulation (PWM). Additionally, during striking of the CCFL, a wider initial energy pulse is used. During normal operation, a lower energy pulse is used.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.