Numerical Stability Studies for AC and DC Electrical Circuits

The paper presents a stability algorithm of the perturbed electric circuits which are described by a systems of linear equations. The circuit sources are affected by perturbations. The stability study was made by using Wielandt-Kantorovitch inequality and by applying the spectral norm of the inverse coefficients matrix. This study is made at the variation of a parameter. The examples are selected from the domain of simple d.c. and a.c. electric circuits, with complex matrix of coefficients but the method could be applied for large circuits also.