Driver circuit for an LED lighting tube, LED lighting tube and method for providing a controlled DC output power
US10212769B2 · kind B2 · utility
0Cited by
2References
12Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 11, 2017 |
| Grant date | Feb 19, 2019 |
| Priority date | — |
| Expiry date | Dec 11, 2037 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02B20/30
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
The invention provides a driver circuit, an LED lighting tube and a method for providing a controlled DC output power. An open loop control is used for controlling the DC output power in the case that a voltage of an AC input power is in a first voltage range. A closed loop control is used for controlling the DC output power in the case that the voltage of the AC input power is in a second voltage range.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.