Phase-controlled ballast having shifting control
US4459515A · kind A · utility
3Cited by
2References
2Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jan 26, 1982 |
| Grant date | Jul 10, 1984 |
| Priority date | — |
| Expiry date | Jan 26, 2002 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH05B41/392
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
This invention relates to a circuit for shifting a control signal from governance by one variable function to governance by another. It is more particularly concerned with a phase-controlled ballast wherein such a circuit shifts the control from a function of lamp current to a function of line voltage for better overall performance and economy.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.