High efficiency power amplifier

H - Electricity – 03 – F

Patent

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Details

330/13, 330/35,

H03F 1/32 (2006.01) H03F 1/02 (2006.01) H03F 1/34 (2006.01) H03F 3/183 (2006.01) H03F 3/21 (2006.01) H03F 3/217 (2006.01) H03F 3/387 (2006.01)

Patent

CA 2030505

ABSTRACT A system for driving a load is disclosed comprising a programmable power supply for metering power directly to the load and a regulating element connected to the load and parallel with the programmable power supply for shunting excess power from the programmable power supply in response to a control signal in order to waveshape the power signal to the load. Sensing means are provided for sensing the power demands of the load and generating a control signal which is received by the programmable power supply. In response to the control signal, the programmable power supply meters more or less power to the load so that the power delivered directly to the load by the power supply approximately follows the power demand of the load as determined by the control signal. The power delivered by the programmable power supply is always in excess of the power demanded by it so that the regulating element continuously shunts power away from the load in accordance with the control signal in order to waveshape the power signal so as to provide a high fidelity signal to the load.

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