Electronic circuit for operating a plurality of gas discharge lamps across a common voltage source
US8188681B2 · kind B2 · utility
0Cited by
4References
9Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jan 22, 2009 |
| Grant date | May 29, 2012 |
| Priority date | — |
| Expiry date | Aug 7, 2030 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH05B41/2822
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
The proposed circuit makes it possible to operate a plurality of gas discharge lamps, particularly cold cathode tubes, across a common voltage source. The circuit reduces the resistance tolerance of the lamp characteristic curves through controlled debalancing of the lamp currents with the aid of debalancing modules. Through the active reduction in the resistance tolerance, the requirements placed on the electric strength of the balancing transistors as well as energy losses of the balancing circuit are reduced.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.