Electronic Engineering Glossary Terms

"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"

'Va' to 'Vd', 'Ve' to 'Vh', 'Vi' to 'Vz'

VACUUM. An enclosed space which contains no air.

VACUUM EVAPORATION. Process of producing thin film components.

VACUUM TUBE. An electron tube evacuated such that its electrical characteristics are essentially unaffected by the presence of residual gas.

      
Vacuum Tube Graphic and Photo

VANE ATTENUATOR. A waveguide component used to provide attenuation.

VAR. Abbreviation for Volt-Amperes Reactive.

VARACTOR. A PN junction semiconductor, designed for microwave frequencies, in which the capacitance varies with the applied voltage. 'Varicap' or 'VVC', Voltage [dependent] variable capacitor [varies in picofarads]. [Varactor Diode Manufacturers]

VARACTOR FM MODULATOR. An FM modulator that uses a voltage-variable capacitor (varactor).

VAR HOUR. [VARhour] The reactive power, Volt-Ampere used within an hour; as measured by a VAR Hour meter.

VARIABLE. A representative symbol that can assume any of a given set of values.

VARIABLE ATTENUATOR. An attenuator for reducing the strength of an ac signal either continuously or in steps, without causing signal distortion.

VARIABLE CAPACITANCE DIODE. See Varactor.

VARIABLE-MU-TUBE. Same term as Remote-Cutoff Tube.

Variable Capacitor

VARIABLE CAPACITOR. An adjustable Capacitor. In this example the dielectric is air. Also refer to the section on Capacitor Definitions.

VARIABLE RESISTOR. A wire-wound or composition resistor, the value of which may be changed over a designed range. Also refer to the section on Resistor Definitions. [Potentiometer Manufacturers]

VARIAC. An autotransformer that contains a toroidal winding and a rotating carbon brush so that the output voltage is continuously adjustable from zero to line voltage

VARISTOR. A resistor that changes value with applied voltage. A varistor may also be called a VDR [Voltage Dependent Resistor]. Varistors will have a negative voltage coefficient. [Varistor Manufacturers]

VARNISHED CAMBRIC. Cotton cloth coated with insulation varnish. An insulation used on high-voltage conductors.

VD. Voltage DMOS. In a power supply circuit, voltage supplied by a MOS circuit, measured next to the MOS device.

VDD. In a power supply circuit supplied by a MOS circuit, the voltage supplied by a MOS device but referenced next to the power supply and not next to the DMOS device.

Next set of "V" terms.