Issued Patents All Time
Showing 26–33 of 33 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5710696 | Controllable converter power supply | Michael D. Madsen | 1998-01-20 |
| 5672963 | Variable induction control led transformer | Don J. Corrigall, Richard Martin Hutchison | 1997-09-30 |
| 5615095 | Method and apparatus for protecting an inverter power supply | Michael D. Madsen | 1997-03-25 |
| 5446641 | Power selection and protection circuit responsive to an input voltage for providing series or parallel connected inverters | Albert M. Nowak | 1995-08-29 |
| 5444356 | Buck converter having a variable output and method for buck converting power with a variable output | Michael D. Madsen | 1995-08-22 |
| 5319533 | Power selection and protection circuit responsive to an input voltage for providing series or parallel connected inverters | Albert M. Nowak | 1994-06-07 |
| 5157236 | Adaptive pulse mode gas metal arc welding control | Todd Gerald Batzler | 1992-10-20 |
| 4769754 | Stabilized welding power source including a series-resonant current-regulated converter using a transformer having an air-gapped core | Robert L. Risberg | 1988-09-06 |