Bi-level output electronic high intensity discharge (HID) ballast system
US6204614A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | May 7, 1999 |
| Grant date | Mar 20, 2001 |
| Priority date | — |
| Expiry date | May 7, 2019 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S315/04
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A bi-level output electronic high intensity discharge (HID) ballast system includes a circuit for selectively generating a bi-level output for powering a lamp and an electronic HID ballast with a feedback loop. The system also includes an error amplifier receiving a first signal indicative of one of current and power applied to the lamp and a reference voltage and generating a control signal applied to the feedback loop to thereby control power the applied to the lamp, and a switch which controls the level of the reference voltage. Alternatively, the system includes an error amplifier receiving a feedback signal indicative of one of current and power generated by the electronic HID ballast and a reference voltage and generating a control signal applied to the feedback loop to thereby control the power applied to the lamp, and a switch which controls the level of the feedback signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.