-U-

Uncharged ~ Material having atoms with the same number of electrons in orbit as the number of protons in the nucleus. Having no electrical charge.

-V-

Via ~ A small hole drilled then plated or etched into a printed circuit board for continuing connectivity to a different layer of the printed circuit board.

Virtual Ground ~  Point in a circuit that is always at approximately ground potential. Often a ground for voltage, but not for current.

Volt (V) ~  Unit of potential difference or electromotive force. One volt is the potential difference needed to produce one ampere of current through a resistance of one ohm.

Voltage Controlled Oscillator (VCO) ~ Oscillator whose output frequency depends on an input control voltage.

-W-

Watt (W) ~ Unit of electrical power required to do work at the rate of one joule per second. One watt of power is expended when one ampere of direct current flows through a resistance of one ohm.

Wavelength (λ) ~ Distance between two points of corresponding phase and is equal to waveform velocity divided by frequency.

Wireless ~ Term describing radio communication that requires no wired between two communicating points.

-X-

X-Axis ~ Mathematical Horizontal Axis.

-Y-

Y-Axis ~ Mathematical Vertical Axis.

-Z-

Z-Axis ~ Mathematical Perpendicular Axis to X-axis & Y-axis.

Zener Diode ~  Semiconductor diode in which reverse breakdown voltage current causes the diode to develop a constant voltage. Used as a clamp for voltage regulation.

 

These definitions were compiled from the internet and CADKraft Engineering assumes no liability in their accuracy nor their completeness.