Design and Implementation of Programmable Under Voltage, Over Voltage Protection

Abstract

This paper is presented to trip the relay in line with the versions within the supply voltage for defensive household equipment as well as the electronic system in case of over voltage and under voltage. Many times, there is a situation that the voltage level increases over the particular threshold limit in a circuit. In that case, the appliances can be damaged due to the part being destroyed. In that condition, it requires an extra protection mechanism to protect the system as a load.According to the input from the voltage sensing circuit, the Arduino board will decide the tripping of the relay, as the voltage varies above or below the set value. The threshold value of under-voltage, over-voltage, is set by the user according to the application. For setting these values, the keypad and LCD are interfaced with an Arduino board.