System and method for controlling solid state lamps
US10298014B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Nov 3, 2017 |
| Grant date | May 21, 2019 |
| Priority date | — |
| Expiry date | Nov 3, 2037 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02B20/30
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A solid state driver circuit that is compatible with either a low frequency mains or magnetic ballast supply or a high frequency electronic ballast input is presented. An input detection circuit detects the frequency of the supply and selectively adjusts the drive circuit to act as a linear regulator when an electronic ballast is detected, or as a switched mode regulator when mains or a magnetic ballast is detected. There is also provided a method of driving a solid state lamp. The method has a step which receives an input power supply. The method also has an enabling operation of a switching regulator or the shorting of a switching regulator according to the frequency of the input power supply.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.