Operating circuit for a high-pressure discharge lamp
US5039916A · kind A · utility
1Cited by
1References
17Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 17, 1986 |
| Grant date | Aug 13, 1991 |
| Priority date | — |
| Expiry date | Jun 17, 2006 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S315/07
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A circuit arrangement suitable for operating a high-pressure discharge lamp (80) in conjunction with a controlled current limiter (6) by means of a control signal which is at least composed of the sum of a lamp-voltage-dependent signal part and a lamp-current-dependent signal part. The invention, the absolute value of the lamp-current-dependent signal part is chosen to be smaller than the absolute value of the lamp-voltage-dependent signal part. The circuit arrangement provides a rapid control, which keeps the lamp voltage substantially constant.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.