Circuit arrangement and method for starting and operating discharge lamps
US6933681B2 · kind B2 · utility
6Cited by
4References
19Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jan 23, 2004 |
| Grant date | Aug 23, 2005 |
| Priority date | — |
| Expiry date | Feb 22, 2024 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S315/07
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
In the case of circuit arrangements for operating discharge lamps (Lp1, Lp2) which include a charge pump for reducing line current harmonics, an energy imbalance occurs when the lamps are started. In order for this not to lead to components being destroyed, but for sufficient ignition voltage nevertheless to be generated at the lamps (Lp1, Lp2), a threshold switch (MOV, TH) monitors the frequency of an inverter included in the circuit arrangement.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.