Patent ID: 6137391
Filing Date: 2000-10-24
Classification: H01F

Abstract:
A flux-controlled variable transformer having a continuously variable secondary winding voltage, comprising:a first magnetic circuit composed of a first U-cut core and a second U-cut core, both the cores contacting at their cut ends with each other in the state either of the cores having been turned by 90.degree. in twisting direction relative to the other;a second magnetic circuit;a primary winding wound in common around the first U-cut core of the first magnetic circuit and the second magnetic circuit;a secondary winding wound around the second magnetic circuit; anda control winding wound on the second U-cut core of the first magnetic circuit,wherein a secondary winding voltage can be continuously changed through control of a magnetic flux linking the primary and secondary windings with change of magnetic resistance of the first magnetic circuit having the primary winding wound thereon by changing a value of an exciting current in the control winding.