Discharge lamp lighting device
US5621281A · kind A · utility
53Cited by
7References
9Claims
0Family size
Assignees
Inventors
Key dates
| Filing date | Jun 5, 1995 |
| Grant date | Apr 15, 1997 |
| Priority date | — |
| Expiry date | Jun 5, 2015 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02B20/00
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A current feedback type discharge lamp lighting device including a switching circuit which switches an impedance of an impedance device in accordance with the number of connected discharge tubes. In the discharge lamp lighting device, a tube current for each of the connected discharge tubes is maintained constant, and the discharge lamp lighting device tends to not be effected by stray capacitance.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.