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Large-signal model
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<p>Large-signal modeling is a common analysis method used in <a href="/facts/Electronic_engineering/WCSVulpu">electronic engineering</a> to describe nonlinear devices in terms of the underlying <a href="/facts/Nonlinearity/4aYItALC">nonlinear</a> equations. In <a href="/facts/Electronic_circuit/IRfQ6Cc2">circuits</a> containing nonlinear elements such as <a href="/facts/Transistor/Bmr8zwL0">transistors</a>, <a href="/facts/Diode/JyaoyGnk">diodes</a>, and <a href="/facts/Vacuum_tube/VHd1BNLq">vacuum tubes</a>, under "large signal conditions", AC signals have high enough magnitude that nonlinear effects must be considered. </p><p>"Large signal" is the opposite of "<a href="/facts/Small-signal_model/P3VYrx4K">small signal</a>", which means that the circuit can be reduced to a linearized equivalent circuit around its operating point with sufficient accuracy. </p>