| 摘要 |
PROBLEM TO BE SOLVED: To provide a water supply control device which can be effectively reduced in power consumption even if a solenoid valve is a few in frequency of control because water supply is low in frequency. SOLUTION: A latching type solenoid valve 9 turns a valve which controls water supply to an open state from a closed state and vice versa corresponding to drive signals 13 fed to its solenoid, or keeps the valve in an open or in closed state even when the drive signals 13 are stopped, where the lowest drive voltage VL required for turning the solenoid valve 9 into a required state, either an open state or a closed state, is applied to feed the drive signals 13 continuously to the solenoid for a minimum drive time tMIN.
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