DEFINITION OF THE APERIODIC COMPONENT OF MAINS FREQUENCY ELECTRIC SIGNAL WITH AMPLITUDE MODULATION
The article considers theoretical theses that permit to detect the presence of an aperiodic component and its waveform based on magnitude modulation of the electric signal of transient process. Problem is solved on the basis of the folloeing mathematical operations: multiplication of initial electric signal and supplementary auxiliary unit harmonic signal with frequency much more, then one of the main harmonic of initial electric signal. At the result we have an auxiliary signal, then by selective separation on frequency of supplementary auxiliary unit harmonic signal we receive damped harmonic signal. The envelope curve of this signal repeat waveform of the aperiodic component of the electric signal of transient process.