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hackaday.io
All About PC817 Optocoupler
An Optocoupler also known as Photocoupler or Optical Isolator is a component that transfers electrical signals between two isolated circuits using light. It physically and electrically separates a low-voltage control circuit (like a microcontroller) from a high-voltage or noisy power circuit (like a motor or AC mains). It is basically a solid ...
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