Light source driving device including a switching current adjustment circuit
US8749165B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 25, 2011 |
| Grant date | Jun 10, 2014 |
| Priority date | — |
| Expiry date | Aug 24, 2032 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH05B45/56
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A light source driving device configured to drive a light-emitting unit is provided. The light source driving device includes a direct voltage source, a first capacitance unit, and a switching current adjustment circuit. The direct voltage source is coupled with the light-emitting unit and supplies a direct voltage. The first capacitance unit and the light-emitting unit are connected in parallel. The switching current adjustment circuit and the light-emitting unit are connected in series. The switching current adjustment circuit is configured to bear a part of a voltage stress of the direct voltage source and is configured to switch the direct voltage.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.