| 摘要 |
PURPOSE:To reduce the supply of a power from a power source by supplying power only when the terminal voltage of a capacitor connected in parallel with a load becomes lower than the prescribed level. CONSTITUTION:When a switch SW is closed, a transistor Q3 is turned ON, and a capacitor C is charged by power from a line l1. When the capacitor C is charged to the prescribed voltage, a transistor Q4 is turned ON, a transistor Q5 is turned OFF, a transistor Q6 is turned ON, a transistor Q1 is turned OFF, a transistor Q2 is turned ON, and a transistor Q3 is turned OFF, and no power is applied to the capacitor C. When the capacitor C is discharged to turn OFF the transistor Q4, the capacitor C is again charged. |
