Abstract: The output voltage of a transformer is regulated by controlling the flow of magnetic flux through a shunt core. The transformer includes a main core fabricated from U-I laminations and is arranged to form a substantially rectangular structure. A primary and a secondary coil are seated on the main core. A shunt core with shunt winding having lamination size and structure substantially analogous to that of the main core is positioned in spaced alignment to said main core. A flux interconnecting path, called the bottleneck, connects the main core and the shunt core to form a sturdy unified structure. The shunt winding is activated by control circuitry by which the flux flow through the shunt core is limited and hence the output voltage is regulated.

Abstract: The output voltage of a flux controlled transformer is regulated by controlling the magnetic flux flow in the main core of the transformer. This regulation is achieved by a magnetic structure which includes a main core with primary and secondary coils thereon; shunt cores symmetrically situated about the main core; and leakage paths symmetrically positioned about the main core so as to interconnect the main and shunt cores. In one configuration the leakage paths include magnetic laminations which are positioned perpendicular to the magnetic laminations which form the main and shunt cores. In another configuration the magnetic laminations are arranged in a trapezoidal configuration.