Issued Patents All Time
Showing 1–25 of 26 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9220140 | LED lighting driver | Shen-Yao Liang | 2015-12-22 |
| 9190909 | Control device for multiphase interleaved DC-DC converter and control method thereof | Yaow-Ming Chen, Hung-Jyun Chen, Yang Chen | 2015-11-17 |
| 9093894 | Multiple-level power control system | — | 2015-07-28 |
| 8294379 | Dimmable LED lamp and dimmable LED lighting apparatus | Cheng-Nan Wu | 2012-10-23 |
| 8247992 | LED driver circuit | Shen-Yao Liang | 2012-08-21 |
| 7750616 | Buck converter LED driver circuit | — | 2010-07-06 |
| 7443119 | Circuit and method for controlling the rotating speed of a BLDC motor | — | 2008-10-28 |
| 7427893 | Circuit and method for controlling the power mode a class-D amplifier | Kuo H. Wu | 2008-09-23 |
| 7332962 | Filterless class D power amplifier | Kuo H. Wu, Cheng-Nan Wu, Tyng-Yang Chen | 2008-02-19 |
| 7295452 | Active power factor correction circuit and control method thereof | — | 2007-11-13 |
| 7259531 | Speed control of brushless DC motors | — | 2007-08-21 |
| 7106566 | Power adapter interface circuitry for protecting a battery operated system | Sorin Laurentiu Negru, George Hsieh, Jacky Chen, Frank Shih, Scott Wu | 2006-09-12 |
| 7057310 | Dual-output voltage regulator | Sorin Laurentiu Negru, Terry J. Groom, Fu-Yuan Shih, Te-Jen Hsieh | 2006-06-06 |
| 6903535 | Biasing system and method for low voltage DC—DC converters with built-in N-FETs | Sorin Laurentiu Negru | 2005-06-07 |
| 6861824 | Charger system with dual-level current regulation and dual-level thermal regulation | Sorin Laurentiu Negru, Fu-Yuan Shih | 2005-03-01 |
| 6798177 | Boost-buck cascade converter for pulsating loads | Sorin Laurentiu Negru, Fu-Yuan Shih, George Hsieh | 2004-09-28 |
| 6707280 | Bidirectional voltage regulator sourcing and sinking current for line termination | Sorin Laurentiu Negru, Fu-Yuan Shih | 2004-03-16 |
| 6495995 | Self-clocking multiphase power supply controller | Terry J. Groom, Stuart Pullen | 2002-12-17 |
| D425233 | Decorative fluorescent lamp and lamp fixture | — | 2000-05-16 |
| 5999421 | Dual-channel power system with an eight-pin PWM control chip | — | 1999-12-07 |
| 5903764 | Smart battery selector offering power conversion internally within a portable device | You-Yuh Shyr, Sterling Du | 1999-05-11 |
| 5892336 | Circuit for energizing cold-cathode fluorescent lamps | Yung-Lin Lin, John Chou | 1999-04-06 |
| 5619402 | Higher-efficiency cold-cathode fluorescent lamp power supply | — | 1997-04-08 |
| 4785387 | Resonant converters with secondary-side resonance | Fred C. Lee | 1988-11-15 |
| 4720667 | Zero-current switching quasi-resonant converters operating in a full-wave mode | Fred C. Lee | 1988-01-19 |