Issued Patents All Time
Showing 1–25 of 25 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10320279 | Power supplies and methods for reducing common mode noise | Yuk Man Shing | 2019-06-11 |
| 10056756 | Method and apparatus to solve PFC capacitor reduction of line AFLC ripple without passive filters | Neal George Stewart | 2018-08-21 |
| 10027120 | System and method for high efficiency power quality correction | Jian Carlo Decena Zapata, Efren II Santos Cruzat, Neal George Stewart, Gordon Currie | 2018-07-17 |
| 9979312 | Energy saving high frequency series buck AC voltage regulator system | Neal George Stewart | 2018-05-22 |
| 9941698 | Fast response active reactive power (KVAR) compensator | Neal George Stewart | 2018-04-10 |
| 9819279 | High frequency series AC voltage regulator | Neal George Stewart | 2017-11-14 |
| 9621020 | Control circuits and methods for controlling switching devices | Zong Bo Hu, Ying Qu, Kevin D. Wildash, Wai Kin Chan | 2017-04-11 |
| 9219413 | Power supplies responsive to multiple control signal formats | Conor Quinn | 2015-12-22 |
| 9148058 | High frequency series AC voltage regulator | Neal George Stewart | 2015-09-29 |
| 9124180 | Multiple resonant converter apparatus and control method | Tai Keung Lee, Xiao Fen Zhong, Yi CAI | 2015-09-01 |
| 8207779 | Control circuits and methods for controlling switching devices | Zong Bo Hu, Ying Qu, Kevin D. Wildash, Wai Kin Chan | 2012-06-26 |
| 8056858 | Device and method for providing radiation occlusion and aero-thermal protection | Frederick B. Koehler | 2011-11-15 |
| 7830269 | Health monitoring for power converter capacitors | Zhe Wang, Huai JIANG, Lin Guo Wang | 2010-11-09 |
| 7817051 | Power converter with degraded component alarm | Zhe Wang, Huai JIANG, Lin Guo Wang | 2010-10-19 |
| 7804415 | Health monitoring for power converter components | Zhe Wang, Huai JIANG, Lin Guo Wang | 2010-09-28 |
| 7589505 | Power supply with reliable voltage feedback control independent of any ground voltage difference | — | 2009-09-15 |
| 7417339 | Fast transition power supply | — | 2008-08-26 |
| 7352596 | Method of operating a resonant push-pull converter in an above resonant frequency mode | — | 2008-04-01 |
| 7307839 | Air ventilation cooling systems for a portable power device | Man Keung Tse, Shu Chung Wong | 2007-12-11 |
| 6623294 | Adapter with manually retractable cable assembly and electrical plug assembly | Man Keung Tse, John M. Groves, Neal George Stewart, Steven Willing | 2003-09-23 |
| 6402546 | Adapter with retractable cable assembly and electrical plug assembly | John M. Groves, Man Keung Tse, Neal George Stewart | 2002-06-11 |
| 6246593 | Topology-independent synchronous rectifier commutation circuit | — | 2001-06-12 |
| 5986895 | Adaptive pulse width modulated resonant Class-D converter | Neal George Stewart, Chau Hon Yu | 1999-11-16 |
| 5959848 | Low inductance high current connector for improved power supply system | John M. Groves, Man Keung Tse, Shu Chung Wong | 1999-09-28 |
| 5901038 | Power supply system for high density printed circuit boards | Neal George Stewart, John M. Groves, Man Keung Tse, Rex W. J. Whittle, Alastair Alexander Keir | 1999-05-04 |