Variable control of electronic power supplies

Details Variable control of electronic power supplies Variable control of electronic power supplies

1996-12-03

1999-06-01

Mullins, James B.

Amplifiers

With control of power supply or bias voltage

Control means for anode of screen grid circuit

330123, 330202, 330285, 330297, 381120, 381121, A03G 702

Patent

active

059091452

ABSTRACT:
Sag of a power signal delivered to of an amplifier is controlled. The maximum amount of sag is limited to limit crossover distortion. A measuring circuit monitors an observed signal to generate a measured signal. A sag control circuit receives the measured signal and one or more input control signals, and in response generates a sag control signal. A regulator circuit receives the sag control signal and a raw power supply signal and in response generates a regulated DC power supply signal for the amplifier. The regulator circuit decreases the maximum power available to the amplifier as the sag control signal magnitude increases, so as to increase distortion and compression in the output signal (e.g., and achieve a "warm", "airy" or "forgiving" sound quality resembling or improving the sound of a vacuum tube amplifier).

REFERENCES:
patent: 4797633 (1989-01-01), Hunphrey

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