Isolation and voltage level shifting using optocoupler
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YouTubeElectronics Education
Isolation and voltage level shifting using optocoupler
This circuit shows the working and application of an optocoupler for isolation and level shifting. The input side uses a digital logic signal (0V–5V) to drive an internal LED through resistor R1 (1kΩ). The light activates the internal phototransistor, controlling the 12V circuit through R2 (10kΩ). When input is LOW, the output stays at 12V ...
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