Patents
System and Method for Recovering Energy in Power Converters		This shows a circuit which can clamp the excessive voltage ringing and use that energy for the gate drive, helping to improve efficiency. Patent 6343023, 2002.
Blocking Time Maintenance Circuit for ZVS  Converters		This shows a circuit that maintains a constant blocking time on a saturable core for a ZVS Fullbridge with input voltage varying. Patent 5956238, 1999.
Three Phase Input Boost Converter		This is a 3 phase PFC boost employing a single switch device as opposed to 3 devices. Patent 5694310, 1997.
DC-DC Converter with Reset Control for Enhanced Zero-Volt Switching		This shows a technique that can be applied to ZVS Fullbridge saturable cores to better control the blocking time. Patent 5418703, 1995.
Resonant-Transition DC-to-DC Converter		Technique showing how to use saturable cores to significantly improve the ZVS load range of a ZVS Fullbridge. Patent 5132889, 1992.
Efficient P-Channel Fet Drive Circuit		This circuit shows a novel way to drive and turn off a  P-channel Fet in a Buck converter application.  Patent 5115143, 1992.