Push-pull inverter ballast for arc discharge lamps
US4004187A · kind A · utility
19Cited by
5References
16Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Feb 23, 1976 |
| Grant date | Jan 18, 1977 |
| Priority date | — |
| Expiry date | Feb 23, 1996 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S315/07
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A push-pull ballast for an arc discharge lamp has a high power portion comprising a semiconductor switching inverter and transformer means for step-up or step-down of voltage to be supplied to a load and a low power portion comprising control means sensitive to load parameters as, for example, load current which provides instantaneous control over the switching inverter thereby providing the advantages of high input power factor and precise control over the load voltage and current characteristics.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.