I am working on a school project in which the average power measurement is made by a PLC having ADC module.
My plan is to use a 220~24V step down X'mer and resistive divider circuit. The range of ADC module is from -10V to +10V.
I am thinking of feeding the AC signal from the resistive divider into the ADC. On the other hand, I am also worried that unforeseen things would happen and make the ADC spoil.
Any opinion? Can I use bidirectional TVS? Can it protect the ADC from electrical hazards?
Please help to give suggestions.
I have a basic understanding, but I have little hands on on this.
Thanks and Best Regards