A B C D E F G H I J K L M N O P Q R S T U V W X Y Z |
- watt
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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
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Maximum power a device can safely handle continuously.
- watt-hour
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Unit of electrical work, equal to a power of one watt being absorbed for one hour.
- wattmeter
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Instrument used to measure electric power in watts.
- wave
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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
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Shape of a wave.
- waveguide
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Rectangular or circular pipe used to guide electromagnetic waves at micro frequencies.
- wavelength
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(l) Distance between two points of corresponding phase and is equal to waveform velocity divided by frequency.
- weber
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(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
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Oscillator that uses an RC low-pass filter and an RC high-pass filter to set the frequency of oscillations.
- wet cell
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Secondary cell using a liquid as an electrolyte.
- wetting
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Term used in soldering to describe the condition that occurs when the metals being soldered are hot enough to melt the solder so it flows over the surface.
- wheatstone bridge
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Four arm bridge circuit used to measure resistance, inductance or capacitance.
- wideband amplifier
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Also called "broadband amplifier." Amplifier with a flat response over a wide range of frequencies.
- winding
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One or more turns of a conductor wound in the form of a coil.
- wire
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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
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American wire gauge (AWG) is a system of numerical designations of wire diameters.
- wireless
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Term describing radio communication that requires no wired between two communicating points.
- wirewound resistor
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Resistor in which the resistive element is a length of high resistance wire or ribbon usually nichrome wound onto an insulating form.
- wire wrapping
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Method of making a connection by wrapping wire around a rectangular pin.
- woofer
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Large loudspeaker designed primarily to reproduce low frequency audio signals.
- work
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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.