Pseudo power supply network

A device used to measure harmonics and other noise generated by a power supply circuit and fed back to the power source side. It is also called LISN (Line Impedance Stabilization Network). During noise measurement, the power supply circuit and load are connected to the outlet through an artificial power supply network. The noise is output as the noise terminal voltage of the artificial power supply network. The noise terminal voltage includes two types: normal mode, which measures noise generated between input lines, and common mode, which measures noise generated between the input line and ground.