Hi everybody, I'm new to this forum, however I think it's possible to have my doubts answered.
I'm trying to measure the voltage of a battery (around 45V), however I wouldn't like to use a voltage divider with resistors, because the voltage for the analog input of the Arduino will have the same ground (GND) of my battery, and this is my concern. Other importante point is to use less components as possible. So my questions:
Already has any IC to do this kind of measure? Or is there a way to use the voltage divider with resistores with an isolated amplifier?
Thank you so much.