| 7521630 |
Parallel and virtual parallel interconnection of solar cells in solar panels |
— |
2009-04-21 |
| 7449841 |
Charge limited high voltage switch circuits |
— |
2008-11-11 |
| 7391242 |
Sawtooth waveform generator |
— |
2008-06-24 |
| 7388413 |
Ramp generator with fast reset |
— |
2008-06-17 |
| 7279851 |
Systems and methods for fault protection in a balancing transformer |
— |
2007-10-09 |
| 7265499 |
Current-mode direct-drive inverter |
— |
2007-09-04 |
| 7250726 |
Systems and methods for a transformer configuration with a tree topology for current balancing in gas discharge lamps |
— |
2007-07-31 |
| 7239087 |
Method and apparatus to drive LED arrays using time sharing technique |
— |
2007-07-03 |
| 7187140 |
Lamp current control using profile synthesizer |
— |
2007-03-06 |
| 7183724 |
Inverter with two switching stages for driving lamp |
— |
2007-02-27 |
| 7173382 |
Nested balancing topology for balancing current among multiple lamps |
— |
2007-02-06 |
| 7173380 |
Push-pull driver with null-short feature |
— |
2007-02-06 |
| 7173379 |
Incremental distributed driver |
— |
2007-02-06 |
| 7141933 |
Systems and methods for a transformer configuration for driving multiple gas discharge tubes in parallel |
— |
2006-11-28 |
| 7061183 |
Zigzag topology for balancing current among paralleled gas discharge lamps |
— |
2006-06-13 |
| 6930582 |
Self lead foil winding configuration for transformers and inductors |
— |
2005-08-16 |
| 6642830 |
Self lead foil winding configuration for transformers and inductors |
— |
2003-11-04 |
| 5109185 |
Phase-controlled reversible power converter presenting a controllable counter emf to a source of an impressed voltage |
— |
1992-04-28 |
| 5029064 |
Phase-controlled reversible power conversion with equal duty cycle substantially constant amplitude square wave excitation of the power transformer |
— |
1991-07-02 |
| 4629964 |
Battery power source |
— |
1986-12-16 |
| 4595872 |
Computer-attached uninterruptable DC power supply |
— |
1986-06-17 |