Check out the new water level sensor circuit. The simple water level indicator circuit presented here makes this system automatic, i.e. it switches on the pump when the water level in the overhead ...

He decided it was time to build his own solution to this problem. What he ended up with was a water level sensor made from PVC pipe and a few other components. The physical assembly is pretty simple.

Researchers from India’s Vellore Institute of Technology have tested a seven-level inverter with five power semiconductor switches for use with solar-powered, off-grid water pumping systems. The ...