Starting circuit for gaseous discharge lamps
US4808888A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Nov 28, 1986 |
| Grant date | Feb 28, 1989 |
| Priority date | — |
| Expiry date | Nov 28, 2006 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S315/07
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A starting and operating circuit for high pressure discharge lamps including a pair of input terminals for connection to an alternating current supply and a pair of output terminals for connection across the lamp. A ballast inductor is connected at its ends in series between one of the input terminals and one of the output terminals and a pulse generator is connected between the output terminals. The pulse generator comprises a non-linear capacitor (NLC) and a semiconductor bipolar thyristor (commonly known as a SIDAC) connected in series, the non-linear capacitor and bipolar thyristor being connected in parallel with the discharge lamp.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.