What is " it " ? Pass-through What?Can someone suggest a circuit wherein I can filter out 230VAC and allow only 3.3VDC to pass-through it?
Actually I am trying to pass 3.3V through a manual switch to nodemcu and operate a relay based on the input received from the manual switch but In case of some failure in NodeMCU manual switch cannot be operated so in such scenario I want to give 230 V to the same point of the manual switch so that appliance can be operated in case of NodeMCU failure. But there is a high risk of 230 V flowing to the input of NodeMCU and damaging the circuit. Can anyone help me resolve this issue?Hello Everyone,
Can someone suggest a circuit wherein I can filter out 230VAC and allow only 3.3VDC to pass-through it?
And it seems like the TS doesn't have the necessary experience, skills, and knowledge.an additional warning is that working with 230 volt mains power is dangerous to those without adequate experience and skills, and knowledge, with hazards including shocks and death, in addition to other injuries.
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