大多数自动供水装置的电路在水泵停止供水时仍然要用电,使电路长期处于工作状态,既耗电又使电路长期工作易造成故障。一般家庭里用水量并不大,水泵供水的时间远小于不供水的时间,本装置仅设计了自动上水和水满停机并切断电路电源两个功能,不仅节电,而且简单易制,成本低廉。 电路原理如图1、图2。当浮球降至水位线B时,连杆的端部便按压按钮开关AN2,使之吸合接通市电。变压器B输出10V电压经整流滤波后为控制电路供电,此时T2、T3处于饱和导通状态,继电器J1、J2得电吸合。J1触点J1闭合,锁定了电路的供电通道,J2触点J2-1和J2-2闭合,使水泵向水塔供 Most automatic water supply device circuit in the water pump to stop the water still have to use electricity, the circuit is long in working condition, both the power consumption and circuit long-term work is easy to cause failure. The average family water consumption is not large, the pump water supply time is much smaller than the time of non-water supply, the device is designed only automatically Sheung Shui and water full shutdown and cut off the circuit power two functions, not only saving, but also simple and easy system cost low. Circuit diagram shown in Figure 1, Figure 2. When the float drops to the water level line B, the end of the connecting rod presses the push button switch AN2 to make it pull in and connect to the mains. Transformer B output voltage of 10V after the rectifier filter for the control circuit power supply, then T2, T3 in a fully conducting state, the relay J1, J2 are electrically sucked together. J1 contact J1 closed, locking the power supply channel of the circuit, J2 contacts J2-1 and J2-2 closed, so that the pump to the water tower for