Low flicker LED driving circuit with high power factor
US9380669B2 · kind B2 · utility
1Cited by
0References
15Claims
0Family size
Assignee
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Key dates
| Filing date | Jun 6, 2014 |
| Grant date | Jun 28, 2016 |
| Priority date | — |
| Expiry date | Dec 3, 2034 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH05B45/10
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An LED-based lighting apparatus comprises a rectified AC voltage source having a rectified output connected to a storage capacitor through a switching device, a plurality of LED segments controlled by a linear driving circuit and at least one charging path connected between the LED segments and the storage capacitor. One or more controllable linear LED driving units may be connected in parallel with the storage capacitor to provide balance between reducing flicker and increasing power factor of the lighting apparatus.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.