| 摘要 |
<p>PURPOSE: To make the body small, by supporting an auxiliary magnetic core in a frame-shaped magnetic core, in which a closed magnetic circuit is formed in a magnetic path of a transformer, and at the same time forming a constant- current reactor with a coil turned around the auxiliary core. CONSTITUTION: Edge faces of E-shaped side legs of an auxiliary magnetic core 31 are fitted to each edge of a member 11fa of a frame-shaped magnetic core 11f so that a closed magnetic circuit is constituted by the member 11fa of the magnetic core 11 and the auxiliary magnetic core 31. With a coil 33 provided around a central leg of the auxiliary magnetic core 31, magnetic flux caused by a current in the coil 33 is passed through a magnetic gap 32. At the same time, a constant current reactor is constituted by the auxiliary magnetic core 31 and the coil 33. A magnetic gap 34 is formed in a magnetic path in a transformer. Then, part of the magnetic core in the transformer functions also as part of a magnetic core of the constant current reactor, and the whole body is reduced in size and weight.</p> |
