Large-signal model: Difference between revisions

Revision as of 14:19, 24 July 2012

Revision as of 06:53, 27 October 2014

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A small signal model takes a circuit and based on an operating point (bias) and linearizes all the components. Nothing changes because the assumption is that the signal is so small that the operating point (gain, capacitance etc.) doesn't change.

A large signal model on the other hand takes into account the fact that the large signal actually affects the operating point and takes into account that elements are non-linear and that circuits can be limited by power supply values. A small signal model ignores simultaneous variations in the gain and supply values.

==See also==