Dimming apparatus transmitting control signals with AC power line
US8441205B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 5, 2011 |
| Grant date | May 14, 2013 |
| Priority date | — |
| Expiry date | Jan 30, 2032 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH05B45/3725
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A dimming apparatus transmitting control signals with AC power line (10) is applied to an alternating current power source (20), a light emitting diode driving power unit (40), and a light emitting diode unit (30). The dimming apparatus transmitting control signals with AC power line (10) includes an input voltage detection unit (102), a one-shot signal unit (104), an AND gate unit (106), a pulse width modulation dimming signal unit (108), an inductor unit (110), a first switch unit (114), a dimming signal recovery unit (124), and a second switch unit (122). The input voltage detection unit (102) is electrically connected to the alternating current power source (20), the inductor unit (110), and the one-shot signal unit (104). The AND gate unit (106) is electrically connected to the one-shot signal unit (104), the pulse width modulation dimming signal unit (108), and the first switch unit (114). The dimming signal recovery unit (124) is electrically connected to the light emitting diode driving power unit (40), the inductor unit (110), the first switch unit (114), and the second switch unit (122). The second switch unit (122) is electrically connected to the light emitting diode un…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.