Input voltage waveform distortion

A numerical indicator representing the accuracy (quality) of commercial electric eyes. Normally, commercial power supplies use sine waves, but due to noise caused by surges and other factors, high-frequency components may be added, resulting in voltage distortion. In electrical and electronic devices that require high input voltage precision, this distortion can cause malfunction, so caution is necessary. One countermeasure is to insert a noise filter that addresses voltage waveform distortion.