Driving apparatus for LED chips of different specifications
US9131579B2 · kind B2 · utility
Assignees
Inventor
Key dates
| Filing date | Mar 11, 2014 |
| Grant date | Sep 8, 2015 |
| Priority date | — |
| Expiry date | Mar 11, 2034 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH05B45/14
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A driving apparatus for LED chips includes: a driving unit, a voltage measuring unit, and a feedback control module. The driving unit provides a driving voltage and a driving current to a LED chip; the voltage measuring unit measures the driving voltage; the feedback control module is built-in with a default power; According to the driving voltage measured by the voltage measuring unit and the default power, the feedback control module controls the driving unit to maintain the driving current at a working current, wherein the working current matches the rated current of the LED chip. Whereby, the driving apparatus could drive LED chips of different specifications.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.