Isolated DC Voltage Measurement with Arduino @simple-circuit

Uploaded June 2024 | Updated September 2026, 3 weeks ago

Isolated DC Voltage Measurement with Arduino. High voltage side of the circuit is isolated from low voltage side using the HCNR201 optocoupler which is used to make a unity gain analog isolation amplifier.
Circuit diagram and Arduino code at:
simple-circuit.com/isolated-dc-voltage-measurement-circuit-with-arduino

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