"A", "B", "C", "D", "E", "F", "G", "H", "I", "J", "K", "L", "M",
"N", "O", "P", "Q", "R", "S", "T", "U", "V", "W", "X", "Y", "Z"

VIRTUAL GROUND. A point in a circuit that is at ground potential (0 V) but is not connected to ground.

VOLTAGE DROP. The difference in voltage between two points. It is the result of the loss of electrical pressure as a current flows through a resistance.