Discharge lamp lighting device
US4961029A · kind A · utility
5Cited by
11References
4Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 22, 1989 |
| Grant date | Oct 2, 1990 |
| Priority date | — |
| Expiry date | Mar 22, 2009 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S315/07
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A discharge-lamp lighting device comprises a voltage generating circuit for generating a high-frequency voltage for lighting a discharge lamp, a self-oscillating device provided in the path of lamp current flowing through the discharge lamp for exciting the voltage generating circuit to self-oscillation, a direct current blocking element connected in series with the self-oscillating device for blocking the flow of a direct current in the self-oscillating device, and a bypass element connected in parallel with the direct current blocking element and the self-oscillating device for bypassing the direct current.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.