Water Level Controller Circuit Diagram. So current through r5 and d1 to trigger base of q3 cause q3 conducts current to cause the transistor q4 also works. Such sensors are more reliable than induction type sensors.
The circuit is completely automatic which starts the pump motor when the water level in the over head tank goes below a preset level and switches off the pump when the water level in the over head tank goes above the full level. 3 colour leds red green and yellow. This post is about the three water pump motor water level controller wiring diagram with thermal overload protected relay magnetic contactor 4 pole mcb circuit breaker and water or liquid controller.
Uln2003 water level controller circuit.
Automatic water level controller circuit. When there is enough water in the underground tank probes c and s are connected through water. A very simple water level controller circuit based on 555 ic and 6 transistors. In the diagram the overhead tank and underground tank connection shown with the sensor.
