Fourier Series, Crossover Distortion

Cuthbert Nyack
In certain kinds of amplifiers ( complementary symmetry etc ), the voltage required to turn on the amplifiers can produce crossover distortion if not correctly designed and adjusted.
The applet below shows crossover distortion and its frequency spectrum. The signal with crossover distortion is shown in red and its spectrum in magenta. The extent of the distortion can be controlled by the parameter "a".
The resultant waveform is constructed from its frequency spectrum and the accuracy of the representation depends on the number of terms summed.
The eg parameters (3, 0.03, 1.0) show the effect of 3rd harmonic distortion.

When activated the following gif image show how the applet should appear.

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COPYRIGHT © 1996 Cuthbert Nyack.