Triac dimmable electronic ballast with single stage feedback power factor inverter
US6144169A · kind A · utility
14Cited by
6References
8Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Dec 29, 1998 |
| Grant date | Nov 7, 2000 |
| Priority date | — |
| Expiry date | Dec 29, 2018 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S315/07
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A triac dimmable electronic ballast having a single stage feedback power factor inverter is configured to isolate the resonant circuit current from a DC bias, or a DC transient caused by activations of the triac. The resonant circuit is driven by a high frequency inverter, and contains a feedback path to a DC storage element. Two DC blocking devices are provided, one between the resonant circuit and the inverter, and one between the resonant circuit and the DC storage element.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.