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Nonlinear Circuits

March 15th Fact-of-the-Day

A nonlinear circuit has a ratio of output-signal to input-signal (a transfer function) that is a function of one or more characteristics of an input signal, such its frequency, phase or amplitude. That dependence may change an output signal waveform with respect to an input signal, may cause a variable output signal time-lead or time-lag with respect to an input signal, or both. In actual practice, most non-linear circuits have complex nonlinearities that generate output frequency and phase distortions, output frequency and amplitude distortions, output phase and amplitude distortions, or output frequency, phase and amplitude distortions combined. In addition to this complexity, in actual practice it is not uncommon for frequency, phase and/or amplitude distortions to also be complexly dependant upon one or more additional factors, such as time, temperature, humidity, stray electric fields, stray magnetic fields, stray electromagnetic fields, or other environmental conditions. ©2005 Martek International All rights reserved.


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