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MUETA® amplifiers use output/global feedback. Is that bad?

April 26, 2017amplifiers bad feedback global mueta® output

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MUETA® amplifiers use output/global feedback. Is that bad?

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The global feedback loop is not an error-correction loop as such, but is an integral part of the PWM modulator. All switching amplifiers apply feedback loops of some sort somewhere, even the ones that say they don’t! In a MUETA® amplifier, the output filter is an integral part of the PWM modulator. Our global feedback loop thus includes the output filter but is only as short as other amplifiers’ local (noise shaping) feedback loops. Our complete amplifier compares to others’ local feedback, thus there is no problem.