Driving circuit and illumination apparatus using the same
US8339065B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Aug 31, 2010 |
| Grant date | Dec 25, 2012 |
| Priority date | — |
| Expiry date | Mar 17, 2031 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02J9/065
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An illumination apparatus including an LED comprises a battery holder, an AC/DC adapter interface, an LED unit, and a switch unit. The battery holder is configured to receive a battery. The AC/DC adapter interface is connected to an AC/DC adapter. When the AC/DC adapter is not connected to the AC/DC adapter interface, the switch unit is turned on to allow the driving unit to receive power from the battery. When the AC/DC adapter is connected to the AC/DC adapter interface, the switch unit is turned off to allow the driving unit to receive power from the AC/DC adapter. A driving circuit applied in an illumination apparatus is also provided.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.