Abstract: The project aims to form a low voltage and high voltage indicator. The system will save costly electrical and electronic appliances from the adverse effects of very high and low mains voltages. A project has been proposed on simulating an overvoltage and under-voltage protector, with the hardware. The advantages of our project are -Wide single supply voltage range 2.0 V DC to 36 V DC, Very low supply current drain (0.8mA) independent of supply voltage, low input bias current 25mA.,Input common-mode voltage range includes ground, differential input voltage range adequate to the facility supply voltage.

Keywords: Power Quality, Overvoltage, Under voltage.

| DOI: 10.17148/IJIREEICE.2021.9618