LISN

A pseudo power circuit used to measure noise such as harmonics that the power supply circuit gives to the power source side. During noise measurement, the power circuit and the load are connected via the LISN to a power outlet. Noise is output as the noise terminal voltage of the LISN. There are two types of noise terminal voltage: normal mode, which measures noise generated between input lines, and common mode, which measures noise generated between input lines and ground.