Power-Line Harmonic and Noise Reduction Devices: Some Measured Features

Power-line conditioners, power-line isolators, and other harmonicand noise-reduction devices are often used where sensitive loads must be protected from sources of excessive harmonics and noise. Several features of these devices are discussed including frequency-dependent attenuation of harmonics and noise, the degree of isolation of load noise from the power line, voltage resonant effects with loading, and unloaded power consumption.