- 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 continously.
- 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 microfrequencies.
- 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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