| 摘要 |
A device is for sensing and alarming absence of water in a home machine for manufacturing soybean milk, watery bean curd, and bean curd, which allows the home manufacturing machine to be operated only when the home manufacturing machine contains water; so as to prevent the machine from being operated by a user without water, thereby preventing the machine from getting damaged. The apparatus includes a plurality of components installed in a body. The device includes a ground electrode and a signal electrode electrically connected to two selected in the plurality of the components, respectively; a resistor connected to the signal electrode; a switching transistor connected to the resistor; a controller connected to the switching transistor for outputting a control signal for an alarm when the absence of the water is sensed; a resistor connected to the controller; a switching transistor connected to the resistor; and a buzzer is connected to the switching transistor.
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