本文介绍的一种水位控制电路,可和各种控制电路相连接,不仅能够实现水位的自动控制,而且还有抗干扰性强、适用面广等特点。 该水位控制电路如图1所示。它由正、负直流12V电源供电。当水位低于水位探针的高度时,三极管T1导通,继电器J动作,向控制电路发出无水信号。当水位升至水位探针的高度 This article describes a water level control circuit that can be connected with a variety of control circuits, not only to achieve automatic water level control, but also strong anti-interference, wide range of applications. The level control circuit shown in Figure 1. It is positive and negative DC 12V power supply. When the water level is lower than the height of the water level probe, the transistor T1 is turned on and the relay J is activated to send a water-free signal to the control circuit. When the water level rises to the level of the water level probe