Patent ID: 6023153
Filing Date: 2000-02-08
Classification: H02M,Y02B

Abstract:
An audio amplifier for receiving input current and sinusoidal line voltage from an AC source, and delivering audio output power to a load, the audio amplifier comprising:a power factor correction circuit for receiving the line voltage from the AC source, the power factor correction circuit including a control circuit operable to cause the wave shape of the input current drawn from the AC source to substantially correspond to the wave shape of the line voltage by producing an intermediate source of voltage at a substantially higher potential than the line voltage of the AC source;a DC power supply coupled to the power factor correction circuit and operable to convert the intermediate source of voltage into a regulated DC source of power; andan audio power amplifier coupled to the DC power supply and operable to convert the DC source of power into the audio output power for delivery to the load.