Two-wired LED light adjusting system
US8324821B2 · kind B2 · utility
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10Claims
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Key dates
| Filing date | Dec 22, 2010 |
| Grant date | Dec 4, 2012 |
| Priority date | — |
| Expiry date | Aug 16, 2031 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH05B45/31
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A two-wired LED light adjusting system, for controlling the luminance adjustment for a LED lamp module. The light adjusting circuit includes a phase modulating circuit, a LED driving circuit and a controller. The phase modulating circuit generates a phase modulating voltage. The controller detects the phase modulating voltage of various waveforms. When the controller detects the phase modulating voltage of different waveforms, the controller controls the LED driving circuit to enable the LED lamp module to emit light of different luminance according to waveforms of the phase modulating voltage.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.