The logic circuit diagram composed of photocoupler

Published:2011/9/15 1:21:00 Author:Rebekka | Keyword: photocoupler , logic circuit | From:SeekIC

Figure 1 is AND gate logic circuit. Its logic expression is P=A, Figure B has 2 photodiodes in series. When input logic level A=1, B=1, output P=1. In a similar way, itcan form Or gate , NAND gate , NOR gate and some other logic circuits. As shown in figure 2, it is a typical AC coupling amplifier circuit, which is suitable for selecting lighting loop SFCL Rl to make B4's current transmission be a constant and protect the linear amplifier effect of the circuit.



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