Discharge lamp operating apparatus and method
US4523795A · kind A · utility
9Cited by
8References
14Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 10, 1984 |
| Grant date | Jun 18, 1985 |
| Priority date | — |
| Expiry date | Aug 10, 2004 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH05B41/04
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A process for operating a discharge lamp with an arc drop of not less than about 75% of a given service voltage includes the steps of series connecting a ballast and discharge lamp, coupling the series connected ballast and discharge lamp to a service voltage source and shunting the discharge lamp with a means for developing a pulse potential at or near the beginning of each half-cycle of the service voltage. Also, a series connected inductive ballast and discharge lamp are connected to a service voltage source and a non-linear dielectric element and preheat switching means each shunting the discharge lamp.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.