An experimental study on the conductive noise generated on AC-mains in power on/off of EUT - The relationship between the conductive noise in power on/off of EUT - the relationship between the conductive noise in power on/off of EUT and the power factor of EUT

The limit values of the conductive noises on AC-mains are specified in normal operations of EUT by the regulation such as CISPR. Meanwhile, it has been said that the conductive noises generated on AC mains when AC power of EUT is turned on/off are larger than them in normal operations. In this paper, at first, it is shown that the conductive noises generated on AC-mains when AC power is turned on/off are lager than them in normal operations for commercially available equipments. Next, it is shown by using the proposed model circuit of EUT that one of the dominant factors for the conductive noises generated on AC-mains when AC power is turned on/off is the power factor of EUT.