X
X Symbol for reactance.
XC Symbol for capacitive reactance.
XL Symbol for inductive reactance.
X and Z demodulation A system of color TV demodulation in which the two reinserted 3.58-MHz subcarrier signals differ by approximately 60° rather than the usual 90°. The R — Y, B — Y, and G — Y voltages are derived from the demodulated signals, and these voltages control the three guns of the picture tube. An important advantage of this system is that receiver circuitry is simpler than that required with I and Q demodulation.
X-axis 1. The reference axis in a quartz crystal. 2. The horizontal axis in a system of rectangular coordinates. 3. The horizontal or left-to-right direction in a two-dimensional system of coordinates. X-X signifies one direction ...
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