# Are impedance calculations only specific to sinusoidal inputs?

All impedance formulae we've derived in my course and calculations e.g. combined impedances in series have all assumed sinusoidal steady state.

My question is, does the notion of "impedance" exist for other period functions other than sine waves e.g. a saw wave? Or are the reactance calculations only relevant for sinusoidal inputs?

• Well, the reactance is related to $\omega=2\pi f$, therefore you have to decide upon one frequency, only. Jun 23 '21 at 18:39