Variable impedence transformer

A variable impedance transformer for controlling the power from an alternating input power source to a load in accordance with a direct current control signal, comprising:

• a first and a second annular saturable reactor core;
• an annular power core;
• a power input winding being simultaneously wound about said annular power core and said first and second annular saturable reactor cores;
• a power output winding being wound about said annular power core for transferring power to the load;
• means connecting said power input windings to the alternating input power source for establishing a magnetic flux in said annular power core and in said first and second annular saturable reactor cores;
• a first and a second control winding respectively wound about said first and second annular saturable reactor cores for controlling saturation of magnetic flux in said first and second annular saturable reactor cores in accordance with the direct current control signal;
• said direct current control signal controlling saturation of magnetic flux in said first and second annular saturable reactor cores thereby controlling the power transferred from the power input winding through said annular power core to said power output;
• said first and second annular saturable cores being disposed in a coaxial relationship with said annular power core being interposed between said first and second annular saturable cores for reducing leakage flux of the variable impedance transformer;
• and
• a low impedance equalizing winding being wound about said first and second annular saturable reactor cores for shunting any resultant alternating voltage induced by any residual magnetic flux as a result of non-substantial physical variations between said first and second annular saturable reactor cores.