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Audio

Low distortion audio frequency oscillators

Low distortion audio frequency oscillators

Low distortion is a relative term. This article describes a simple oscillator design covering 20 Hz-20 kHz in three ranges, with distortion less than 0.05% and a tuning control with a linear scale.

Readers of EW + WW have long shown a lively interest in high fidelity reproduction, dating from before the days of the Williamson amplifier. Since an early quasi-complementary design (Tobey and Dinsdale, 1961) appeared, many solid state high fidelity amplifier designs have featured in its pages, including those by Nelson-Jones and Linsley Hood. The evaluation of amplifier performance requires a low distortion AF oscillator, or rather two since intermodulation testing ...

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