Control sequence for electronic ballast
US6429605B1 · kind B1 · utility
2Cited by
7References
22Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Nov 1, 2000 |
| Grant date | Aug 6, 2002 |
| Priority date | — |
| Expiry date | Nov 1, 2020 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S315/07
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A novel circuit for driving a high intensity discharge (HID) lamp uses pulse width modulation (PWM) switches to generate a signal to be delivered to a HID lamp. During different portions of the operating cycle, the system uses one switch to facilitate all PWM signaling, while the circuit uses two switching switches to generate the PWM signaling during other portions of the cycle operation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.