galvanic isolation

I understand what common mode transients are. What I don't understand is why they are important at a deeper level. This Ti app note says that: What I don't get is why any of that would happen. Also are there more other/further consequences of insufficient CMTI Here is what I understand about...

Hello, I’m designing a logger to collect data from a thermocouple (may be any type) using Raspberry Pico (3.3V). I want to isolate analog pins but signal should be proportional to the input signal. As per my study inductive isolation can be done to transfer power, proportional to the input...