Variable-class amplifier, system, and method
AssigneeAdvanced Energy Industries, Inc.
InventorMichael Mueller
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Abstract
A method and generator for modifying interactions between a load and the generator are described. The method includes applying output power to the load using a power amplifier, controlling a level of the output power responsive to a power control setting, and adjusting a conduction angle of the power amplifier to reduce a level of sensitivity of the power amplifier to variations of an impedance of the load. The generator includes a compensation subsystem coupled to the power amplifier that controls a conduction angle of the power amplifier to enable a sensitivity of the power amplifier to be adjusted.
Claims1
An apparatus, comprising:
- an output to apply output power to a load responsive to a power control signal and a reference signal;
- a power control system that adjusts the power control signal based upon a power set point and the output power;
- and
- a compensation subsystem controlling a class of the power amplifier to enable a sensitivity of the power amplifier, to variations in an impedance of the load, to be adjusted.
Dependencies are inferred from the claim text.