Variable control of electronic power supplies

An electronic power supply control circuit for an electronic circuit having an amplifier and at least one power supply, the amplifier being adapted to receive a raw power supply current from the power supply and an input signal from an input signal source, and to supply a corresponding amplified output signal to a load, the control circuit comprising:

• a measuring circuit for measuring an observed signal and generating a measured signal in response thereto;
• a sag control circuit for receiving said measured signal and generating a sag control signal in response to said measured signal;
• a reference circuit for generating a static reference signal;
• and
• means for regulating the power supply, said regulating means receiving said sag control signal, said reference signal, and a power supply current from the power supply, and generating a regulated power supply current for the amplifier in response to said sag control signal and said reference signal, whereby as the sag control signal increases, said regulating means decreases the maximum power available to the amplifier, thereby producing increased distortion and compression in the output signal.