Abstract: A number of wave correction filters are disclosed which respond to power surges or spikes outside the intended frequency and/or voltage for a load device. The circuits respond to such undesired frequencies and voltage levels by sensing and separating them from the desired voltage and frequencies and connecting the energy from such undesired voltages and/or frequencies to resistors where it is dissipated as heat. In this way, the resulting energy is prevented from distorting the input voltage to the load device. It is also retained in the filter and prevented from traveling through a ground connection to pollute other related circuits.

Abstract: A number of wave correction filters are disclosed which respond to power surges or spikes outside the intended frequency and/or voltage for a load device. The circuits respond to such undesired frequencies and voltage levels by sensing and separating them from the desired voltage and frequencies and connecting the energy from such undesired voltages and/or frequencies to resistors where it is dissipated as heat. In this way, the resulting energy is prevented from distorting the input voltage to the load device. It is also retained in the filter and prevented from traveling through a ground connection to pollute other related circuits.

Abstract: A waveform correction filter is connected into an alternating current power line to absorb and remove various forms of power pollution, including high-frequency spikes, surges and other forms of high-frequency oscillations, such as those which result from switching inductive loads on and off. The waveform correction filter of the invention includes a fuse and a coaxial amorphous toroidal inductor connected between a power line and neutral with a low-pass filter connected in series with the fuse and coaxial amorphous toroidal inductor. The filter includes a capacitor, a varistor connected in parallel with said capacitor, and a magnetic core inductor connected in series with each other and in parallel with the capacitor and said varistor. A lamp may be connected in series with the resistor and the magnetic core inductor or across the resistor. Various arrangements are shown for connecting a plurality of the waveform correction filters into single phase or three-phase Wine or delta circuits.