Castor-Perry Kendall

Kendall Castor-Perry is a widely published author, audio expert and filtering maven who’s had a fascination with audio and music reproduction since childhood. A long career spent extracting, processing and managing critical signals from a host of industrial, scientific and consumer environments has offered copious opportunities for exploring the deep recesses of audio circuit and system design. These days, Kendall works as an Architect with Cypress Semiconductor, analyzing potential applications for implementation on the latest PSoC devices – audio being the next frontier!
 

The Class i output stage


In this article, Kendall presents a solid state unity-gain power output stage that has very low distortion and for which the biasing current can be set without the need for adjustments and without the need for thermal tracking or compensation techniques. The design is also very unsensitive to device parameters which gives predictable performance from a wide selection of power devices. Working in class AB, the crossover distortion is very low, even in open loop, making possible very linear open loop output stages.
 
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