ABSTRACT
The saturable reactor has two gate windings connected in series opposing and a single control winding. The saturable reactor works best when using a square loop and high permeability magnetic material. The saturable reactor is an amp-turn device. Amp-turns in the control winding will produce amp-turns in the gate winding. The flux is in the downward direction in the right leg, and in an upward direction in the left leg of the EI core, as indicated by the arrows. The flux generated by the gate windings is opposite and equal, and is relatively independent of each other. The saturated inductance is a built-in ac resistor that will support voltage after the magnetic core has been saturated with the control amp-turns. The saturated inductance is very dependent on the magnetic material and its configuration. The tape toroidal cores have a much higher permeability and can be matched to a much tighter tolerance.
