Digital Water Level Indicator Circuit Diagram. The low level and high level probes in the overhead tank are marked l and h respectively. Generally water stored in overhead tank is wasted due to over flow when the tank is full.
Water level controller circuit water level controller circuit. This is a very useful circuit to detect the level of water in the tank. Various circuits design this uln2004 electronic project circuit diagram design is a very simple water level indicator circuit project.
As a result transistor t1 gets forward biased and starts conducting.
The circuit is very easy to build and contains only three pnp transistors and some other components. The circuit is very easy to build and contains only three pnp transistors and some other components. Uln 2003 ic belongs to the family of uln 200x series if ics. In fact the level of any conductive non corrosive liquids can be measured using this circuit.
