Electronics (Mike Jaroch)


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W

WAFER

A slice of semiconductor material upon which monolithic ICs are produced [14].

WAFER SWITCH

A rotary switch in which the contacts are arranged on levels. Each level (wafer) is electrically independent but mechanically connected by the shaft of the switch [3].


WATT

The unit of electrical power that is the product of voltage and current [16].

WATT-HOUR

A practical unit of electrical energy equal to one watt of power for one hour [1].

WATT-HOUR METER

A meter used to measure electrical energy [3].

WATTAGE RATING

A rating expressing the maximum power that a device can safely handle [1].

WATTMETER

A meter used to measure electrical power [3] [16].

WAVE ANTENNA

Same as BEVERAGE ANTENNA [10].

WAVE MOTION

A recurring disturbance advancing through space with or without the use of a physical medium [10].


WAVE TRAIN

A continuous series of waves with the same amplitude and wavelength [10].

WAVE WINDING

An armature winding in which the two ends of each coil are connected to commutator segments separated by the distance between poles [5].


WAVEFORM

The shape of the wave obtained when instantaneous values of an ac quantity are plotted against time in rectangular coordinates [2].


WAVEFORM ANALYSIS

Observation displays of voltage and current variations with respect to time or
by harmonic analysis of complex signals [16].


WAVEFRONT

A small section of an expanding sphere of electromagnetic radiation that is perpendicular to the direction of travel of the energy [10].


WAVEGUIDE

A rectangular, circular, or elliptical metal pipe designed to transport electromagnetic waves through its interior [10] [11].


WAVEGUIDE DUPLEXER

TR and atr tubes housed in a resonant cavity attached to a waveguide system.


WAVEGUIDE MODE OF OPERATION

Any particular field configuration in a waveguide that satisfies the boundary conditions. Usually divided into two broad types: the transverse electric (TE) and the transverse magnetic (TM) modes [11].


WAVEGUIDE POST

A rod of conductive material used as impedance changing devices in waveguides [11].


WAVEGUIDE SCREW

A screw that projects into a waveguide for the purpose of changing the
impedance [11].


WAVELENGTH

The distance, usually expressed in meters, traveled by a wave during the time interval of one complete cycle. It is equal to the velocity divided by the frequency [2] [10] [12].


WAVEMETERS

Calibrated resonant circuits that are used to measure frequency [16]. An instrument for measuring the wavelength of an RF wave [18].


WEBER'S THEORY

A theory of magnetism which assumes that all magnetic material is composed of
many tiny magnets. A piece of magnetic material that is magnetized has all of the tiny magnets aligned so that the north pole of each magnet points in one direction [1].


WHEATSTONE BRIDGE

An ac bridge circuit used to measure unknown values of resistance, inductance, or capacitance [16].


WIDE-BAND AMPLIFIER

An amplifier designed to pass an extremely wide band of frequencies, such
as a video amplifier [8].


WINDOW

See SLOT [11].

WIRE

An insulated conductor, with low resistance to current flow, that is either solid or stranded [1] [4].

WIRING DIAGRAM

A diagram that shows the connections of an equipment or its component devices or parts. It may cover internal or external connections, or both, and contains such detail as is needed to make or trace connections that are involved [4].


WOBBLE FREQUENCY

The frequency at which an electron wobbles on its axis under the influence of
an external magnetic field of a given strength [11].


WORDS-PER-MINUTE

An approximate rate of speed. It means the number of five letter words with a
space between them that can be transmitted or received in a one-minute period [17].


WORK

The product of force and motion [1].

WORKING VOLTAGE

The maximum voltage that a capacitor may operate at without the risk of
damage [2].


WYE

(Y)—A 3-phase connection in which one end of each phase winding is connected to a common point. Each free end is connected to a separate phase wire. The diagram of this connection often resembles the letter Y [5].



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