Electrical isolation using optocoupler
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YouTubeElectronics Education
Electrical isolation using optocoupler
This circuit demonstrates logic level isolation using an optocoupler. When the microcontroller output is 5V, the optocoupler’s LED conducts, activating the internal transistor and pulling the output to 0V. When the input is 0V, the LED is off, the transistor is open, and the output rises to 12V through resistor R2. This allows 5V logic to ...
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