Circuit and method for driving LED lamp with a dimmer
US10462868B2 · kind B2 · utility
1Cited by
32References
13Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 26, 2014 |
| Grant date | Oct 29, 2019 |
| Priority date | — |
| Expiry date | Sep 3, 2035 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02B20/30
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A driver circuit for an LED (light-emitting diode) lamp includes a transformer having a primary winding and a secondary winding, a dimmer circuit coupled to a power source for varying an input voltage to the primary winding, and an output rectifying circuit coupled to the secondary winding for providing an output current to the LED lamp. The driver circuit also includes a controller coupled to the dimmer circuit to receive an average input voltage signal (DIM) from the dimmer circuit. The controller is configured to vary the output current according to the average input voltage.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.