Audio amplifier

Abstract

An audio amplifier has an input for an audio signal being amplified and an output powering a load on the basis of the amplified audio signal; a generator of reference voltage of very high linearity and low output impedance, able to receive, as input, the audio signal to be amplified; a power current generator including a power voltage generator whose output is connected to the output of the reference voltage generator through a coupling inductance; and a signal adder introducing, for its control, as input to the power current generator, a signal representative of the current provided as output by the reference voltage generator. The signal adder is able to introduce a signal ( L ⁢ di LOAD dt ) representative of the product of the value of the coupling inductance and the drift with respect to time of the current ( di LOAD dt ) provided to the load.

Dependencies are inferred from the claim text.