| 摘要 |
<p>PURPOSE:To miniaturize the potential device as well as to safely perform the frequency switching of the subject transfomer by a method wherein the leakage reactance, which resonates for different frequencies respectively, is obtained by a leakage transformer. CONSTITUTION:On the main core 10 whereon the primary winding 11 will be wound around, the two secondary windings 12a and 12b are wound around side by side on both sides of the primary winding 11, and between the primary winding 11 and each secondary windings 12a and 12b, auxiliary core 13a and 13b having a different leakage reactance are provided. The sectional area of the auxiliary core 13a is fixed in such a manner that the total of the capacity of the main capacitor and a voltage-dividing capacitor resonate at 50Hz. In like manner, the sectional area of the auxiliary core 13b is fixed so that the total of the capacity of the leakage reactance of the primary winding 11 and the voltage-dividing capacitor resonate at 60Hz.</p> |
