hi im building a circuit to compare 2 voltages, i am using a LM311 chip, ive built it on a breadboard and it doesn't work, ive tried building it on strip board and it still doesn't work, the schematic is posted below please can you find any problems that i cant see because i think it should work but im not sure where pin 5+6 go because there Balance and strobe so i left them out of it, and pin 4 ive connceted to ground but it says v- on it :S.
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