Device for setting luminosity of light-emitting diodes
US8035306B2 · kind B2 · utility
Inventor
Key dates
| Filing date | Dec 20, 2005 |
| Grant date | Oct 11, 2011 |
| Priority date | — |
| Expiry date | Apr 12, 2027 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02B20/30
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
The invention concerns a circuit for setting all types of LED'S (7), mounted in series of five, their particular arrangements in series of five, powered by a direct voltage higher than 14 volts, using an LM 317 T regulator (1) and a potentiometer of 4.7 kOhms (8) providing them with a variable luminance. Complementary setting resistors (R1, R2, R3), are arranged in series or in parallel, on the trigger or at the regulator output, so as to obtain a setting stroke starting form the outset of the illumination that is around 7.5 volts, up to its maximum performance around 12.5 volts. The invention is designed to replace all the applications where fixed LED'S are used.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.