Time-Division Multiplication in Wideband Application

A solution for high accuracy electric power measurements for distorted input signals on industrial frequencies (50, 60 Hz) is presented. An improvement in the method of time-division technics is introduced and it refutes the oppinions that time-division technics is not convenient for wideband applications. The accuracy of the realised model is on the 100 ppm level for industrial frequency signals measurements with 100% harmonic distorsion up to 1 kHz.