Light driving circuit
US10111284B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 3, 2014 |
| Grant date | Oct 23, 2018 |
| Priority date | — |
| Expiry date | Sep 28, 2036 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH05B45/39
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A light driving circuit includes a first and second illuminant unit, a power conversion unit, a first and second switching unit, and a first control unit. The power conversion unit receives an input voltage and converts the input voltage into an output voltage. The first switching unit is coupled to the first illuminant unit. When the first switching unit is turned on, the first illuminant unit is driven by the output voltage to emit light and generate a first output current. The second switching unit is coupled to the second illuminant unit. When the second switching unit is turned on, the second illuminant unit is driven by the output voltage to emit light and generate a second output current. The first control unit controls the first switching unit and the second switching unit to be turned on/off according to the first output current and the second current, respectively.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.