| 摘要 |
<p>PROBLEM TO BE SOLVED: To avoid a poor influence in terms of characteristics caused by a floating capacity between lines at a secondary side by forming the primary coil winding of a boosting transformer, a switching element, and a loop where an additional inductance is connected in series, and turning DC on and off that flows through the loop by the switching element. SOLUTION: A circuit has a power supply 1 and a boosting transformer 2, a drive circuit 3, a switching element 4, a diode 5 for rectification, and a diode 6 for rectification. A loop is constituted of a primary coil winding 7, the switching element 4, and the power supply 1 for turning on or off, thus reducing linking at a primary side. Since the ratio of the number of turns between the primary coil winding and the secondary coil winding is extremely large, there is almost no effect even if an inductance that is nearly identical to that of the primary coil winding is connected in series with the primary coil winding. By connecting an additional inductance L0 in series with the primary coil winding, the generation of a high-frequency vibration current caused by the floating capacity of the primary and the secondary coil windings can be minimized.</p> |
