Ambrell Patents

Patent #	Author	Synopsis (hover for Abstract)
7626463	Paull	Automatic Frequency compensation for pulse width modulation RF level control
7551011	Paull	Constant phase angle control for frequency agile power switching systems
7489530	Paull	High voltage full bridge circuit and method for operating the same
6861629	Dahake, et. al.	Induction furnace for heating a workpiece in an inert atmosphere or vacuum
6730894	Thompson, et. al.	Resonant frequency tracking system and method for use in a radio frequency (RF) power supply
6664881	Thompson, et. al.	Efficient, low leakage inductance, multi-tap, RF transformer and method of making same
6521874	Thompson, et. al.	RF power supply
6359267	Wilcox, et. al.	Induction heating system
6348679	Ryan, et. al.	RF active compositions for use in adhesion, bonding and coating
6316756	Thompson, et. al.	Resonant frequency tracking system and method for use in a radio frequency (RF) power supply
6271508	Thompson, et. al.	System and method for providing RF power to a load
6255635	Thompson, et. al.	System and method for providing RF power to a load
6157258	Adishian, et. al.	High frequency power amplifier
6072362	Lincoln	System for enabling a full-bridge switch-mode amplifier to recover all reactive energy
6995345	Gorbold	Electrode apparatus for stray field radio frequency heating
6812445	Gorbold	Electrode apparatus for stray field radio frequency heating
6649888	Ryan, et. al.	Radio frequency (RF) heating system
6617557	Ryan, et. al.	Apparatus for RF active compositions used in adhesion, bonding, and coating
6600142	Ryan, et. al.	RF active compositions for use in adhesion, bonding and coating
6141227 WO/2000/076056	Sheikh , et al.	Power supply with reduced second harmonic
WO/1996/017499	Davies	Induction Heating Coil
WO/1996/005648	Davies	Driving Apparatus