Optoelectronic circuit with light-emitting diodes
US10264633B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 19, 2016 |
| Grant date | Apr 16, 2019 |
| Priority date | — |
| Expiry date | Jul 19, 2036 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH05B45/397
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An optoelectronic circuit for receiving a variable voltage containing alternating increasing and decreasing phases. The optoelectronic circuit includes assemblies of light-emitting diodes mounted in series; a current source connected to each assembly by a switch; for each switch, a first comparison module for comparing the current passing through the switch with a current threshold; a second comparison module for comparing a voltage representing the voltage at the terminals of the current source with a voltage threshold; and a control module connected to the first and second comparison modules and designed to control the opening and closing of the switches, during each increasing phase and each decreasing phase, according to signals supplied by the first and second comparison modules.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.