Solid-state ballast for rapid-start type fluorescent lamps
US4277726A · kind A · utility
95Cited by
4References
21Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Aug 28, 1978 |
| Grant date | Jul 7, 1981 |
| Priority date | — |
| Expiry date | Aug 28, 1998 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S315/07
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A novel transistorized fluorescent lamp ballast and lamp combination operates from AC line voltage. The ballast provides for "soft-start" lamp operation in one featured aspect and provides for some lamp light output regulation in another featured aspect thereof.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.