Electrical impedance is usually defined in terms of alternating-current steady-state values of current and voltage. When network problems are approached using the Laplace transformation, impedance takes on a different character, as now both transient and steady-state currents and voltages are considered. It is therefore useful to develop a general expression for impedance in the form of a time domain operator. This operator is a rational function in powers of the differential operator D=d/dt. One can then show that the phasor and Laplace transform expressions for impedance are compatible. COPYRIGHT © 1964—THE INSTITUTE OF ELECTRICAL AND ELECTRONICS ENGINEERS, INC.
CITATION STYLE
Ferris, C. D. (1964). A General Definition for Impedance. IEEE Transactions on Education, 7(1), 6–8. https://doi.org/10.1109/TE.1964.4321832
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