Patent ID: 6300828
Filing Date: 2001-10-09
Classification: H03F

Abstract:
A switchless high efficiency amplifier comprising:a load;a first input supply;a first amplifier having a first input connected to the first input supply, a first output connected to a first end of the load, and a first gain defined by a first negative feedback loop;a second amplifier having a second input connected to the input supply, a second output connected to a first end of the load via a first resistive element, and a second gain defined by a second negative feedback loop, wherein when the first output and the second output are the same, the first resistive element reduces the second output so that the first output is greater and is therefore provided to the load, further wherein the first gain and the second gain are equal so that the first output and the second output are equal; anda first operational voltage applied to the first amplifier and a second operational voltage greater than the first operational voltage applied to the second amplifier.