Issued Patents All Time
Showing 1–25 of 26 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9231471 | Hybrid-switching step-down converter with a hybrid transformer | — | 2016-01-05 |
| 8350538 | Voltage step-down switching DC-to-DC converter | — | 2013-01-08 |
| 8350540 | Storageless step-down switching DC-DC converter | — | 2013-01-08 |
| 8134351 | Four-switch step-down storageless converter | — | 2012-03-13 |
| 8040704 | Integrated magnetics switching converter with zero inductor and output ripple currents and lossless switching | — | 2011-10-18 |
| 7915874 | Step-down converter having a resonant inductor, a resonant capacitor and a hybrid transformer | — | 2011-03-29 |
| 7778046 | Voltage step-up switching DC-to-DC converter field of the invention | Zhe Zhang | 2010-08-17 |
| 6462962 | Lossless switching DC-to-DC converter | — | 2002-10-08 |
| 6400579 | Lossless switching DC to DC converter with DC transformer | — | 2002-06-04 |
| 6388896 | Lossless switching converter with DC transformer | — | 2002-05-14 |
| 6304460 | Switching DC-to-DC converter utilizing a soft switching technique | — | 2001-10-16 |
| 6008589 | Single-switch, high power factor, ac-to-ac power converters | Edward E. Deng | 1999-12-28 |
| 5969484 | Electronic ballast | Enrico Santi, Zhe Zhang | 1999-10-19 |
| 5815380 | Switching converter with open-loop primary side regulation | Zhe Zhang | 1998-09-29 |
| 5790005 | Low profile coupled inductors and integrated magnetics | Enrico Santi | 1998-08-04 |
| 5654880 | Single-stage AC-to-DC full-bridge converter with magnetic amplifiers for input current shaping independent of output voltage regulation | Milivoje Slobodan Brkovic | 1997-08-05 |
| 5642267 | Single-stage, unity power factor switching converter with voltage bidirectional switch and fast output regulation | Milivoje Slobodan Brkovic | 1997-06-24 |
| 5570276 | Switching converter with open-loop input voltage regulation on primary side and closed-loop load regulation on secondary side | Zhe Zhang | 1996-10-29 |
| 5539630 | Soft-switching converter DC-to-DC isolated with voltage bidirectional switches on the secondary side of an isolation transformer | Andrzej Pietkiewicz, Milivoje Slobodan Brkovic | 1996-07-23 |
| 5442534 | Isolated multiple output Cuk converter with primary input voltage regulation feedback loop decoupled from secondary load regulation loops | Ljubisa Dragoljub Stevanovic | 1995-08-15 |
| 5442539 | CuK DC-to-DC switching converter with input current shaping for unity power factor operation | Milivoje Slobodan Brkovic | 1995-08-15 |
| 5416387 | Single stage, high power factor, gas discharge lamp ballast | Er-Lang Deng | 1995-05-16 |
| 4274133 | DC-to-DC Converter having reduced ripple without need for adjustments | Robert D. Middlebrook | 1981-06-16 |
| 4257087 | DC-to-DC switching converter with zero input and output current ripple and integrated magnetics circuits | — | 1981-03-17 |
| 4186437 | Push-pull switching power amplifier | — | 1980-01-29 |