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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.
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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.