Pseudo power grid

A device used to measure noise such as harmonics generated by a power supply circuit on the power side. Also known as LISN (Line Impedance Stabilization Network). During noise measurement, the power supply circuit and load are connected through an artificial power network to the outlet. Noise is output as the noise terminal voltage of the artificial power network. There are two types of noise terminal voltage: normal mode, which measures noise occurring between input lines, and common mode, which measures noise occurring between input line and ground.