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theben electrical components are photodetectors that convert light into current or voltage signals depending on the mode of use. The die typically uses a PN junction with photosensitive characteristics, which is highly sensitive to changes in light, exhibits unidirectional conductivity, and changes its electrical properties with varying light intensity; therefore, the current in the circuit can be altered by the intensity of illumination. Photodiodes are also called photoelectric diodes. Photodiodes are similar in structure to semiconductor diodes; their die is a PN junction with photosensitive characteristics and unidirectional conductivity, so during operation they require