Patent ID: 6788151
Filing Date: 2004-09-07
Classification: H03F

Abstract:
A variable output power supply, comprising:an envelope detector for receiving an input signal and for generating a control signal representative of an envelope associated with the input signal; and a controllable source for generating an output that dynamically varies in response to at least the control signal and functionally corresponds with the envelope of the input signal; wherein the controllable source comprises: a multiple output power supply having a plurality of outputs, the multiple output power supply generating at least one of: (i) a plurality of substantially constant output voltages, and (ii) a plurality of substantially constant output currents corresponding to the plurality of outputs; a multiplexing circuit responsive to at least one output selection signal for selecting at least one of the plurality of outputs; and control circuitry having an input for receiving the control signal, the control circuitry generating the at least one output selection signal.