| 摘要 |
<p>A solenoid valve (10) for a water purification system which opens a first voltage (V1) and is maintained in the opened position by a second voltage (V2) that is lower than the first voltage (V1). The solenoid valve (10) contains a valve (12) which can move between an opened position and a closed position, and a coil (14) which moves the valve (12) to the open position when the voltage (V1) is supplied to the coil (14) and maintains valve (12) in the open position when the second voltage (V2) is supplied to the coil (14). The coil (14) is coupled to a control circuit (18) which initially supplies the first voltage (V1) to the coil (14) when the valve is to be opened, and then reduces the first voltage (V1) to the second (V2) after the valve (12) is in the open position.</p> |
