Hello everyone, I am learning about STPM32 design and I am wondering about the power source for the IC to operate. Mass (GND) is shared between AC and DC? This seems unreasonable. Hope everyone shares. knowledge.
Hi,
so whats the problem ?
The STPM32 is powered with the cpu, from vcc , 3.3V .
And this GND is connected to a mains line , so all the circuit is on line voltage. Dangerous !
Nothing for beginners or if not trained for needed safety measures when working on dangerous voltage.
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