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DICTIONARY OF ELECTRONICS
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- watt
- 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. In an AC circuit, true
power is the product of
effective volts and effective
amperes, multiplied by the power
factor.
- wattage rating
- Maximum power a device can
safely handle continuously.
- watt-hour
- Unit of electrical work,
equal to a power of one watt
being absorbed for one hour.
- wattmeter
-
Instrument used to measure
electric power in watts.
- wave
-
Electric, electromagnetic,
acoustic, mechanical or other
form whose physical activity
rises and falls or advances and
retreats periodically as it
travels through some medium.
- waveform
-
Shape of a wave.
- waveguide
-
Rectangular or circular pipe
used to guide electromagnetic
waves at micro frequencies.
- wavelength
-
(l) Distance between two points
of corresponding phase and is
equal to waveform velocity
divided by frequency.
- weber
-
(Wb) Unit of magnetic flux. One
weber is the amount of flux that
when linked with a single turn
of wire for an interval of one
second will induce an
electromotive force of one volt.
- wien-bridge oscillator
-
Oscillator that uses an RC
low-pass filter and an RC
high-pass filter to set the
frequncy of oscillations.
- wet cell
-
Secondary cell using a liquid as
an electrolyte.
- wetting
-
Term used in soldering to
describe the condition that
occurs when the metals being
soldered are hot enough to melt
the solder so it flowes over the
surface.
- wheatstone bridge
-
Four arm bridge circuit used to
measure resistance, inductance
or capacitance.
- wideband amplifier
-
Also called "broadband
amplifier." Amplifier with a
flat response over a wide range
of frequencies.
- winding
-
One or more turns of a conductor
wound in the form of a coil.
- wire
-
Single solid or stranded group
of conductors having a low
resistance to current flow. Used
to make connections between
circuits or points in a circuit.
- wire gauge
-
American wire gauge (AWG) is a
system of numerical designations
of wire diameters.
- wireless
-
Term describing radio
communication that requires no
wired between two communicating
points.
- wirewound resistor
-
Resistor in which the resistive
element is a length of high
resistance wire or ribbon
usually nichrome wound onto an
insulating form.
- wire wrapping
-
Method of making a connection by
wrapping wire around a
rectangular pin.
- woofer
-
Large loudspeaker designed
primarily to reproduce low
frequency audio signals.
- work
-
Work is done any time energy is
transformed from one type to
another. The amount of work done
is dependent on the amount of
energy transformed.
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