Light emitting diode driving apparatus
US8917025B2 · kind B2 · utility
3Cited by
8References
12Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 6, 2012 |
| Grant date | Dec 23, 2014 |
| Priority date | — |
| Expiry date | Apr 23, 2033 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02B20/30
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
Disclosed herein is a light emitting diode (LED) driving apparatus including: at least one energy storages connected in series with each other; a plurality of LEDs each connected in parallel with each of the energy storages; and a switching control unit selectively connecting the at least one energy storages according to a level of applied voltage to charge/discharge voltage in/from the selected energy storages and control driving of the LEDs by the charging/discharging operation. Therefore, it is possible to easily drive the LEDs without a converter.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.