Circuit arrangement for operating electric lamps
US6525489B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Dec 26, 2001 |
| Grant date | Feb 25, 2003 |
| Priority date | — |
| Expiry date | Dec 26, 2021 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH05B41/2855
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
The invention relates to a circuit arrangement for operating electric lamps, the circuit arrangement having an inverter for generating a medium or high-frequency supply voltage for one or more lamps (21) and a starting circuit for the inverter, and also a device for deactivating the starting circuit, the starting circuit comprising a voltage-dependent switching element (34) and a capacitor (33), and the device for deactivating the starting circuit comprising a switching means (35) whose switching path is arranged in parallel with the capacitor (33) of the starting circuit. According to the invention, the device for deactivating the starting circuit has a threshold switch (39) for controlling the switching means (35).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.