Driver circuit for improving LED flickers
US9167645B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 13, 2015 |
| Grant date | Oct 20, 2015 |
| Priority date | — |
| Expiry date | Feb 13, 2035 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH05B45/382
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A driver circuit adopting a primary side regulating architecture and an isolation transformer for improving LED flickers includes a transformer, a primary side regulating module, a feedback portion, a driving module and a dimming portion. The transformer includes an input coil, an auxiliary coil, a driving coil, and a dimming coil. The primary side regulating module is electrically coupled to the input coil; the feedback portion is electrically coupled to the auxiliary coil and the primary side regulating module; the driving module is electrically coupled to the driving coil; the dimming portion is electrically coupled to the dimming coil and the driving module. When a dimming signal inputted to the dimming portion has a voltage of 1V-10V, and the driver circuit is applied to a panel light, the LED flicker is improved effectively.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.