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Noise EMI on JN5169

Question asked by Giau Nguyen on May 30, 2019
Latest reply on Jun 7, 2019 by vicentegomez

I working on Smart Switch ZigBee device with a switch-mode power supply and I facing with a big problem - noise EMI.

My device include: power supply + relay below and MCU above.

I can control LightBulb, but when I control electric fan, it make my system hang and watchdog can not work. I have to turn off power and re-supply to fix it.

What should I do? Using shield or anything else?

Thank you so much!