ABSTRACT
There is a wide range of opinion about the definition, cause, and elimination of common mode noise and differential noise. This should cover most of these ideas.
2.1. COMMON AND DIFFERENTIAL MODE DEFINITIONS A basic definition of common mode and differential mode is required. Differential mode means the normal transfer of energy down the line. In fact, this is also called normal mode. A voltage across the line with a current flowing in one direction in one wire and the opposite direction in the other wire is normal mode. In this case, the subject is differential mode noise. In other words, it flows just like normal power in the line energy.
