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Introduction:
In this project we are using three transformers to show three lines of three phases. Transformers which we have used are step down transformer which converts 230V AC into 12V AC. Now these AC signals are converted into DC by using Rectifier and capacitors (to filter noise). Further as we all know that Electronic IC’s work on 5 volt. So we made a voltage divider to generate 5 volt and these signals are given as input into Op-Amp, which is used in comparator mode. Op-Amp used here is LM324 which has 4 Op-Amp inbuilt, out of which we are using 3 in our circuit. The output of Op-Amp is shown digitally i.e. in form of 0’s and 1’s, using LED’s.