| 摘要 |
PURPOSE:To easily obtain an arbitrary voltage by a method wherein a secondary winding is wound in forward direction N1 number of turns, and in the midway, it is wound in the reverse direction N2 number of turns, and the total number of turns of windings of the above are made almost equal, and a winding regulating mechanism with wich the number of windings N1 and N2 will be regulated is provided. CONSTITUTION:A primary winding 3 and a secondary winding 4 are wound around a core 2, the secondary winding 4 is formed by winding a positive winding 4a in forward direction N1 number of turns and by winding a negative winding 4b in the reverse direction N2 number of turns from the midway. Accordingly, when an AC input voltage ei is added to the primary winding 3 having the N number of turns, the voltage eo outputted on the secondary winding 4 is worked out as eo=(N1-N2)ei/N. Therefore, if the number of turns N1 and N2 are changed so that the total number of turns of N1+N2 will be constant, an arbitrary voltage having the same phase as the input voltage or of the shifted phase by 180 deg.C can be obtained as an output voltage eo. |
