| 摘要 |
PROBLEM TO BE SOLVED: To provide a solenoid valve driving circuit using an AC power source, capable of solving a problem that a valve opening and closing speed is different in accordance with a command timing from a control device, and quickening the operation of a valve element of a solenoid valve with high repeatability. SOLUTION: In this solenoid valve driving circuit provided with a transistor bridge circuit capable of converting the inputted constant DC voltage into the AC voltage of rectangular wave, the constant voltage is applied to the solenoid valve from the start of the power supply to the solenoid valve to the termination of the opening motion of the solenoid valve, and the AC voltage of 100 Hz-200 Hz is applied to the solenoid valve during an opening condition of the solenoid valve. |
