| 8482213 |
Electronic ballast with pulse detection circuit for lamp end of life and output short protection |
Wei Xiong, Christopher Radzinski |
2013-07-09 |
| 8450946 |
Zone addressing circuit for an electronic ballast |
Candice Damian |
2013-05-28 |
| 8378579 |
Ballast circuit for a gas discharge lamp with a control loop to reduce filament heating voltage below a maximum heating level |
Wei Xiong |
2013-02-19 |
| 8288956 |
Lamp preheat circuit for a program start ballast with filament voltage cut-back in steady state |
Wei Xiong, Christopher Radzinski |
2012-10-16 |
| 7923942 |
Constant current source mirror tank dimmable ballast for high impedance lamps |
Wei Xiong, Christopher Radzinski |
2011-04-12 |
| 7843141 |
Low cost step dimming interface for an electronic ballast |
Wei Xiong, Christopher Radzinski |
2010-11-30 |
| 5202683 |
Optical traffic preemption detector |
Steven M. Hamer, David L. Wortman |
1993-04-13 |
