Issued Patents All Time
Showing 1–9 of 9 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4893227 | Push pull resonant flyback switchmode power supply converter | Charles Lien, Remo Stella, Wendell Boucher | 1990-01-09 |
| 4742294 | Helix current sense system | — | 1988-05-03 |
| 4670817 | Heat sink and interconnection arrangement for series connected power diodes | Derek J. Whitehead, Charles Lien, Herman Walz | 1987-06-02 |
| 4639844 | Resonant current driven power source for low input voltages | Charles Lien | 1987-01-27 |
| 4594648 | Wide frequency band coupling network for an active ripple and noise filter | — | 1986-06-10 |
| 4566059 | Converter with lossless snubbing components | Derek J. Whitehead, Richard Seleski | 1986-01-21 |
| 4509108 | Three phase a.c. to d.c. voltage converter with improved power line harmonic current reduction | — | 1985-04-02 |
| 4475149 | Resonant current-driven power source | — | 1984-10-02 |
| 4442482 | Dual output H.V. rectifier power supply driven by common transformer winding | — | 1984-04-10 |