A number of our projects require accurate monitoring of voltages. Here we explain the numerous techniques for measuring voltages, both DC and AC, highlight some of the multitude of integrated circuits available and list the pros and cons of various techniques.
To measure power (and hence measure energy) within electrical systems, we need to know the voltage and the current. Power equals the voltage multiplied by the current (P=V x I). We have written information on measuring DC current, in this post we will be writing about measuring voltage, both DC and AC.