MULTIPLE WINDING WIRE TRANSFORMER, ITS OUTPUT VOLTAGE CONTROL METHOD, ABNORMALITY DETECTING METHOD, TRANSFORMER WITH VOLTAGE-ADJUSTING FUNCTION AND OUTPUT VOLTAGE ADJUSTING METHOD

摘要

PROBLEM TO BE SOLVED: To provide a highly reliable voltage adjustable voltage transformer, which does not need a reactor and a resistance element and in which noise will not appear, when voltage is switched. SOLUTION: In the multiple winding wire transformer, at least two winding wires are arranged concentrically. Magnetic resistance of both iron cores, or at least one iron core in the transformer constituted of the two winding wires which are concentrically arranged, an iron core which his interlinked with the two winding wires and an iron core which is interlinked only with the outer winding wire is changed. The magnetic resistance of the iron core is realized by loading and unloading the movable iron core to/from the iron core or constituting the movable iron core with a part of a cylinder and making it as a magnetic route and rotating it around the center shaft of the cylinder.