Series-capacitor electronic ballast
US5789871A · kind A · utility
13Cited by
1References
8Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 9, 1997 |
| Grant date | Aug 4, 1998 |
| Priority date | — |
| Expiry date | Jul 9, 2017 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S315/05
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An electronic ballast for a discharge lamp includes a capacitive storage device which is serially connected with an AC power source and the lamp. A first combination of switches, arranged in a bridge configuration, alternately reverse the polarity in which the capacitive storage device is connected. A second combination of switches periodically bypasses the capacitive storage device and momentarily places the AC power source directly in series with the lamp.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.