| 8232679 |
Uninterruptible power supplies with converter operation conditioned upon static switch commutation and methods of operation thereof |
Rennie Bobb, Paul Lukosius, Frederick Tassitino |
2012-07-31 |
| 7948778 |
Self-testing power supply apparatus, methods and computer program products |
Hans-Erik Pfitzer, Rune Lennart Jonsson, Miguel Chavez, Frederick Tassitino, Jason Scott Anderson |
2011-05-24 |
| 7638899 |
Nested redundant uninterruptible power supply apparatus and methods |
Frederick Tassitino |
2009-12-29 |
| 7633759 |
Power module connection assemblies and universal power supplies and methods including the same |
Larry Van Lynam |
2009-12-15 |
| 7561451 |
Power converter apparatus and methods using a phase reference derived from a DC bus voltage |
Hans-Erik Pfitzer, Keith Bauman |
2009-07-14 |
| 7247955 |
PWM power supplies using controlled feedback timing and methods of operating same |
Frederick Tassitino, Hans-Erik Pfitzer, Rennie Bobb, Julius Isaiah Rice |
2007-07-24 |
| 7088601 |
Power conversion apparatus and methods using DC bus shifting |
Hans-Erik Pfitzer |
2006-08-08 |
| 7050312 |
Multi-mode uninterruptible power supplies and methods of operation thereof |
Miguel Chavez, Robert W. Johnson, Rune Lennart Jonsson |
2006-05-23 |
| 6307763 |
Twelve-pulse rectifiers including separate six-pulse controllers and methods of controlling same |
Miguel Chavez, Fred Tassitino |
2001-10-23 |
| 6201720 |
Apparatus and methods for space-vector domain control in uninterruptible power supplies |
Edward Akbari, Miguel Chavez, Frederick Tassitino |
2001-03-13 |
| 5745355 |
Wireless selective tripping of AC power systems connected in parallel |
Frederick Tassitino |
1998-04-28 |
| 5745356 |
Independent load sharing of AC power systems connected in parallel |
Frederick Tassitino |
1998-04-28 |
| 4673825 |
Uninterruptible power supply with isolated bypass winding |
William J. Raddi, Robert W. Johnson, Blazej W. Sonnenberg |
1987-06-16 |