LED drive circuit
US6980181B2 · kind B2 · utility
90Cited by
6References
6Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Feb 7, 2002 |
| Grant date | Dec 27, 2005 |
| Priority date | — |
| Expiry date | Aug 2, 2022 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH05B45/38
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An LED drive circuit having reduced power consumption has a constant current generating circuit for driving a plurality of LEDs and at least one switch connected to a respective LED for periodically turning on and off the respective LED at a rate higher than a visual perception rate to reduce power consumption.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.