| 摘要 |
PURPOSE:To feed back energy by a spike voltage to a power source side without loss by connecting an absorbing capacitor to switch over the passage of a current between charging time and discharging time. CONSTITUTION:The connection of an absorbing capacitor 6 is switched by switching elements 16, 18, 19. When a spike voltage is charged, the capacitor 6 is connected between the DC power voltage terminal of the primary side DC power source and the collector terminal of a main transistor 1, and when discharged from the capacitor 6, the capacitor 6 is connected between the connecting point of two smoothing condensers 14, 15 connected in series in the primary side DC power source and the DC power voltage terminal of the primary side DC power source. |
