Multi-lamp driving system
US6717372B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 22, 2002 |
| Grant date | Apr 6, 2004 |
| Priority date | — |
| Expiry date | Mar 6, 2022 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH05B41/2827
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A multi-lamp system for driving a lamp set having a first lamp and a second lamp comprises a driving circuit for converting a DC signal to an AC signal, a transformer having a primary side coupled to the driving circuit and a secondary side for outputting the AC power, and a current balance circuit coupled to the low voltage terminal of the lamp set for balancing the current values flowing through the first lamp and the second lamp. The current balance circuit comprises a magnetic core, a first winding coupled to the first lamp and a second winding coupled to the second lamp. The first winding and the second winding are wound on the magnetic core and have the same coil number.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.