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
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
- DAC
Abbreviation for "digital to analog converter."
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Source:http://www.twysted-pair.com/dictionary.htm
Reduction in magnitude of oscillation due to energy being dissipated as heat.
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An amplifier consisting of two bipolar junction transistors with their collectors connected together and the emitter of one connected to the base of the other. Circuit has an extremely high current gain and input Impedance.
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Abbreviation for "direct current".
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A graph representing all possible combinations of voltage and current for a given load resistor in an amplifier.
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The change in input voltage required to produce a zero output voltage when no signal is applied to an amplifier.
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Any source of DC power for electrical equipment.
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Short circuit having zero resistance.
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A frequency factor of ten.
(As used in Audio) A measurement equal to the low pass frequency being ten times the high pass frequency, which is relevant in a passive band pass crossover. The difference between 500 Hz and 5000 Hz is equal to 1 decade.
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Source:http://www.twysted-pair.com/dictionary.htm
Source:http://www.the12volt.com/glossary/glossary.asp
1) A logarithmic representation of gain or loss.
2) (As used in Audio) A unit of measurement for the ratio of loudness. The threshold of hearing is 0 db. One db SPL is the smallest audible difference in sound level.
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Source:http://www.twysted-pair.com/dictionary.htm
Source:http://www.the12volt.com/glossary/glossary.asp
Also called negative feedback. A portion of the output of an amplifier is inverted and connected back to the input. This controls the gain of the amplifier and reduces distortion and noise.
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The time for collector current to reach 10% of its maximum value in a BJT switching circuit.
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In a FET, an operating mode where reverse gate-source voltage is used to deplete the channel of free carriers. This reduces the size of the channel and increases its resistance.
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A MOSFET designed to operate in either depletion mode or enhancement mode.
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Thre area surrounding a pn junction that is depleted of carriers.
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A detent knob has precise click-stops at regular points to indicate how much the control has been turned up or down.
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Source:http://www.the12volt.com/glossary/glossary.asp
Deutsche Industrie Normen (DIN)
German (European) industrial standards. DIN size refers to the stereo size that fits most European automobiles.
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A component or part.
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A two terminal bidirectional thyristor. Has a symmetrical switching mode.
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Property of a material that determines how much electrostatic energy can be stored per unit volume when unit voltage is applied.
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The maximum voltage an insulating material can withstand without breaking down.
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1) Insulating material between two plates where an electrostatic field exists. 2) An insulating material with low electrical conductivity.
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Source:http://www.the12volt.com/glossary/glossary.asp
An amplifier in which the output is in proportion to the differences between voltages applied to its two inputs.
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A circuit in which the output voltage is in proportion to the rate of change of the input voltage. A high pass RC circuit.
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Tendency of conduction band electrons to wander across a pn junction to combine with valence band holes.
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Relating to devices or circuits that have outputs of only two discrete levels. Examples: 0 or 1, high or low, on or off, true or false etc.
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An output where the signal is in digital form to allow external processing before being converted to an analog signal.
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A component that electronically delays the audio signals (in milliseconds) to provide surround type sound as well as compensate for speaker placements.
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Digital Time Delay Gain Control
The control that lets you select how much of the whole of the audio signal to be treated with digital time delay.
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Source:http://www.the12volt.com/glossary/glossary.asp
A two terminal device that conducts in only one direction.
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Abbreviation for "dual in line package."
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Where the output of an amplifier is connected directly to the input of another amplifier or to a load. Also known as DC coupling because DC signals are not blocked.
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An electrical current that flows in one direction.
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The angle at which a speaker disperses sound. Higher frequencies are narrower than lower frequencies. Tweeters are more directional than woofers.
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Release of energy stored in either a battery or a capacitor.
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Package containing only a single component as opposed to an integrated circuit containg many components in a single package.
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Distribution of sound from a speaker.
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Release of electrical energy in the form of heat.
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An undesired change in a waveform or signal.
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2) Audio Sound that is modified or changed in some way. Measured as a percentage of the whole signal.
also see: Harmonic, Frequency, Amplitude & Intermodulation Distortion
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Any capacitance other than that within a capacitor. For example, the capacitance between adjacent turns of wire in a coil.
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Any inductance other than that within an inductor. Example inductance in any conductor.
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A patented noise reduction system that increases dynamic range and signal-to-noise ratio of Dolby encoded media.
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A moveable magnetized area in a magnetized material. Also known as magnetic domain.
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A convex speaker shape usually used for tweeters.
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Pentavalent atoms that give up electrons to the conduction band in an N type semiconductor material.
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The process of adding impurity atoms to intrinsic (pure) silicon or germanium to improve the conductivity of the semiconductor material.
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Standard used with transformer symbols to indicate whether the secondary voltage is in phase or out of phase with the primary voltage.
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A problem that can develop in tuned amplifiers when the frequency of the tuned circuit changes due to temperature or component aging.
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Synonymous with loudspeaker. The term also refers to a loudspeaker being coupled to a horn for acoustic coupling and controlled dispersion of sound.
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Source:http://www.the12volt.com/glossary/glossary.asp
Resistor whose value has been chosen to drop or develop a given voltage.
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DC voltage generating chemical cell using a non liquid (paste) electrolyte.
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Integrated circuit package having two rows of connecting pins.
also see: SIP, QFP, PGA, BGA
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Oscilloscope that can simultaneously display two signals.
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Relating to conditions that are changing or in motion.
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A signal-processing circuit that reduces the level of high frequencies (hiss). Unlike Dolby Noise Reduction, DNR does not require processing during recording.
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Source:http://www.the12volt.com/glossary/glossary.asp
The difference between the softest and loudest portions of sound that an amplifier or recorder can reproduce within an acceptable range of distortion. Expressed in decibels, the higher the number the better.
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Source:http://www.the12volt.com/glossary/glossary.asp
Created: 04/25/04
Updated: __/__/__
Checked: __/__/__