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MOC3021 809Q IC (Original)

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Adros Systems

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Description

MOC3021 is Triac driven a zero-crossing optocoupler. Optocoupler is made of light-emitting and light-sensing devices with no internal connection except light bean. The opto isolators allow two circuits to exchange signals without making any electrical connection. This device works on the principle that light is proportional to signal and the signal is transferred to a phototransistor.