Definition of Terms used by Electrical Engineers
"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"
X. Symbol for Reactance.
X. Irrelevant / Don't care. Used in logic True Tables and timing diagrams to indicate that the input has no effect on the output.
X.-Series. Sets of data telecommunications protocols and interfaces defined by CCITT Recommendations.
X-Axis. The horizontal axis of a chart or graph. The spin axis of the gyro.
X-Band. A radio frequency band from 8000MHz to 12,000MHz
Additional Frequency Bands [letter designations are Obsolete and should not be used]. Some text use 5.2 to 10.9GHz.
XC. Symbol Capacitive reactance. The equation is Xc = 1/[2 x pi x f x C]. Also refer to the section just covering Capacitor Definitions. [Capacitor Manufacturers]
X-Cut Crystal. A type of crystal cut that leaves the major surface perpendicular to the electrical axis, as shown in the diagram to the right.
Xenon A rare gas. [Xenon Lamp Manufacturers]
Xenon Arc Lamp. A high intensity light that excites xenon gas between two electrodes.
XL. Symbol inductive reactance. The equation is XL = [2 x pi x f x L]. [Inductor Manufacturers]
XLR Connector. A shielded 3-conductor microphone plug and audio connector. [Connector Manufacturers]
XOFF. An abbreviation for the ASCII transmission-control character meaning; Transmitter off.
XON. An abbreviation for the ASCII transmission-control character meaning; Transmitter on.
X-Ray Emission. Penetrating radiation similar to light, but with a shorter wavelength, that can penetrate human tissue.
XOR. Short for Exclusive-OR, see that term. A logic function and a logic gate [7486 XOR gate].
XNOR. Short for Exclusive-NOR, refer to that term. A logic function and a logic gate [74266 XNOR gate]. An XOR function with an inverter after the gate.
XTAL Short for crystal. [Crystal Oscillator Manufacturers]
XY-Cut Crystal. A style of crystal cut with characteristics between an X-cut and Y-cut crystal. Refer to Crystal Manufacturers.
XY Plotter. A plotter that prints in both the X and Y directions.
