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Optoelectronic

Optocouplers and photodiodes: PC817, 4N35 and 6N137 optocouplers, MOC3020 and MOC3021 opto-triacs and BPW34 photodiode.

Parts that pass a signal through light to isolate two circuits: the PC817 and 4N35 general-purpose optocouplers, the 6N137 high-speed optocoupler, MOC3020 and MOC3021 opto-triacs for switching triacs on mains, and the BPW34 photodiode. Optocouplers protect a microcontroller from high voltage or noisy circuits.

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