| 摘要 |
PURPOSE:To improve the efficiency by connecting a current transformer and a reactor to a discharging circuit of a snubber capacitor, and connecting the secondary side of the transformer to a power source side, thereby supplying the discharging current of the capacitor to the power source side. CONSTITUTION:When a gate signal is applied to a gate of a GTO12, the GTO12 is turned ON, and the discharging current of a capacitor 34 is flowed to the GTO12 by superposing on the current of a reactor 11 through a current transformer 36, a diode 37 and a reactor 17. The voltage induced in the secondary winding of the transformer 37 is applied through a diode 38 to a capacitor 19, and supplied to a load connected between DC output terminals P2 and N2. When the GTO12 is turned OFF, the capacitor 34 is charged by the current flowed to the GTO12. The energy of the reactor 11 charges the capacitor 19 and is supplied to the load. |
