Just wanted to hear if you guys think this circuit looks sound. The SPI line goes to an esp32. the whole point with the optocoupling to isolate the microcontroller and some other circuits from the mains. should i omit the extra isolation? The two signals that enter the ADC is between 0 and 3.3V. one…

AC wattmeter

Watcher April 25, 2018, 7:36pm 5

Why not use an energy meter chip like the AD7751?

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