|Input Voltage||9 V|
This simple, economical and versatile ckt switches on the motor pump when water in the overhead tank falls below the lowest level and turns it “off” the tank is full. The water level controller circuit is built around IC555 to monitor the water level in the overhead tank and “ON/OFF” status of the motor through the inverter and driver Ckts. The transistor switch circuit monitors the flow of water and rises on alarm if the pump runs dry. The set-up for the water level sensing electrodes is as shown in Fig Electrodes are suspended into the tank such that they don’t touch each other. Point B, L & U of the water level controller Ckt. Are connected to the respective points of the sensor electrodes assembly.
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