Power supply system for multiple loads and driving system for multiple lamps
US6420839B1 · kind B1 · utility
95Cited by
6References
32Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 5, 2001 |
| Grant date | Jul 16, 2002 |
| Priority date | — |
| Expiry date | Apr 5, 2021 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH05B41/2822
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
The present invention relates to a driving system for multiple lamps, which comprises a plurality of lamps including one master lamp and at least one slave lamp, an inverter circuit for converting DC power to AC power to be supplied to said plurality of lamps, and at least one current balancing circuit having an impedance device coupled to each of the slave lamp, so that the equivalent impedance varies with the current values of said master lamp and each of said slave lamps to thereby balance the currents in said master slave lamps.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.