Patent ID: 6535399
Filing Date: 2003-03-18
Classification: H03F

Abstract:
A power supply for providing voltage DC electrical power to power audio amplification and transduction circuitry, said audio amplification and transduction circuitry having a plurality of input channels, each channel including an audio signal having an amplitude, said power supply comprising,a source of DC electrical power, a switching circuit electrically coupled to said source of DC electrical power constructed and arranged for converting said DC power from said source of DC electrical power to controllable AC power, said switching circuit being controllable so that said controllable AC power from said switching device has a variable frequency, a power converter circuit electrically coupled to said source of DC electrical power responsive to said variable frequency for providing an output voltage related to said variable frequency, a device constructed and arranged to provide a highest amplitude signal representative of the contemporary amplitude of the audio signal then having the highest amplitude, and a frequency modulator for controlling said variable frequency so that said power supply provides sufficient power to amplify said audio signal with the highest contemporary amplitude.