Circuit arrangement for operating a gas-discharge lamp
US5367227A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Feb 21, 1992 |
| Grant date | Nov 22, 1994 |
| Priority date | — |
| Expiry date | Feb 21, 2012 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH05B41/042
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A circuit arrangement for operating a gas-discharge lamp is proposed, in which the high voltage for starting the gas-discharge lamp is generated by means of the energy stored in a transformer or capacitor. In order to obtain a steep rise in voltage of the starting voltage, the starting voltage is provided to the gas-discharge lamp via a voltage-controlled switch. A break-over diode, which has very short switching times, is proposed as the voltage-controlled switch. The starting circuit is switched off after starting. This circuit arrangement is also particularly suitable for starting gas-discharge lamps which are warm from operation. In consequence, it is particularly suitable for motor vehicle headlights.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.