Mark Alexander’s eponymous creation was an early example of a high performance CFA amplifier and used an ADI integrated opamp and IGBT output devices in a novel circuit configuration that, at the time, yielded vanishingly low distortion and blistering speed. The ‘Alexander’ amplifier has been recycled by practitioners numerous times since its initial publication with different opamps and mosfets replacing the original IGBT’s. Referenced countless times in publications over the years, it stands as testament to the skill and creativity of its designer.
The Alexander Amplifier
in Power amplifiers, Technical
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