Electronics (Mike Jaroch)

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V

V ANTENNA

A bidirectional antenna, shaped like a V, which is widely used for communications [10].

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VACUUM EVAPORATION

Process of producing thin film components [14].

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VALENCE

The measure of the extent to which an atom is able to combine directly with other atoms. It generally depends on the number and arrangement of the electrons in the outermost shell of the atom [1].

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VALENCE SHELL

The electrons that form the outermost shell of an atom [1].

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VAR

Abbreviation for volt-amperes reactive [2].

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VARACTOR

A PN junction semiconductor, designed for microwave frequencies, in which the capacitance varies with the applied voltage [7] [11] [12].

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VARACTOR FM MODULATOR

An FM modulator that uses a voltage-variable capacitor (varactor) [12].

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VARIABLE

A representative symbol that can assume any of a given set of values [13].

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VARIABLE ATTENUATOR

An attenuator for reducing the strength of an ac signal either continuously
or in steps, without causing signal distortion [11].

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VARIABLE RESISTOR

A wire-wound or composition resistor, the value of which may be changed over
a designed range [1].

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