The use of the term ‘flipping the phase’ or ‘inverting the phase’ is a common misnomer that I see time and time again by professional and amateur alike. The problem is that to invert the phase of an electrical signal simply does not make sense, and what is most commonly meant is actually a polarity inversion. But what’s the difference and why is the terminology wrong? To explain this, it is necessary to clarify what each of these terms mean. (more…)