View source for Steady state (electronics)

{{short description|Equilibrium condition of an electrical circuit after transient effects have subsided}}
{{Other uses|Steady state (disambiguation)}}

In [[electronics]], '''steady state''' is an [[Steady state|equilibrium condition]] of a [[Electrical network|circuit or network]] that occurs as the effects of [[Transient (electricity)|transients]] are no longer important. Steady state is reached (attained) after transient (initial, [[oscillating]] or [[turbulent]]) state has subsided. During steady state, a system is in relative stability.

Steady state determination is an important topic, because many design specifications of electronic systems are given in terms of the steady-state characteristics. Periodic steady-state solution is also a prerequisite for small signal dynamic modeling. Steady-state analysis is therefore an indispensable component of the design process.

==Calculation methods==
Steady state calculation methods can be sorted into [[time-domain]]  algorithms (time domain sensitivities, shooting) and [[frequency-domain]] algorithms ([[harmonic balance]]) methods, are the best choice for most microwave circuits excited with sinusoidal signals (e.g. mixers, power amplifiers).

===Time domain methods===
Time domain methods can be further divided into one step methods (time domain sensitivities) and iterative methods (shooting methods). One step methods require derivatives to compute the steady state; whenever those are not readily available at hand, iterative methods come into focus.

==See also==
* [[Frequency response]]
* [[Stiff circuits]]
* [[Harmonic balance]]
* [[Time domain sensitivities]]
* [[Shooting method]]
* [[Transient response]]

==Further reading==
* Jan Ogrodsky - Circuit Simulation and Algorithms. CRC Press

[[Category:Electrical engineering]]

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