| 摘要 |
PROBLEM TO BE SOLVED: To achieve space saving of a mounting space and cost reduction of a solenoid valve. SOLUTION: A driving control device 10 drives a solenoid valve by carrying rated current based on rated voltage sufficient for moving a movable element in a driving coil 28 of the solenoid valve, to the driving coil over a first period from the start point of time of a driving command period, and carrying power-saving current of repeatedly carrying current of a smaller duty ratio than the rated current, to the driving coil 28 over a second period after the lapse of the first period. The driving control device 10 has a timer circuit 44 for setting the first period, an oscillating circuit 46 for carrying power-saving current to the driving coil 28 in the second period, and a control circuit 48 stopping the oscillating operation of the oscillating circuit 46 over the first period based on output from the timer circuit 44 to carry the rated current to the driving coil 28. COPYRIGHT: (C)2007,JPO&INPIT
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