| 摘要 |
PURPOSE:To prevent the disturbance of the voltage charging operation of a main capacitor, suppress a rise of cost, and minimize a mounting space by connecting a slow recovery diode for preventing the charge leak of the main capacitor between a voltage detecting circuit and the main capacitor. CONSTITUTION:The voltage of a power source E1 raised by a power source booster circuit 1 is charged by a main capacitor C2. The cathode side of the slow recovery diode D2 for preventing the charge leak of the main capacitor C2 is connected to the main capacitor C2, the anode side to the power source booster circuit 1, and the voltage between the cathode and anode is substantially equalized during the operating period of the power source booster circuit 1. A voltage detecting circuit 2 is connected between the anode of the diode D2 and the power source booster circuit 1 to detect the charged voltage of the main capacitor C2. |
