Difference between revisions of "Amplify"
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==Origin== | ==Origin== | ||
[https://nordan.daynal.org/wiki/index.php?title=English#ca._1100-1500_.09THE_MIDDLE_ENGLISH_PERIOD Middle English] ''amplifien'', from Middle French ''amplifier'', from [[Latin]] ''amplificare'', from ''amplus'' | [https://nordan.daynal.org/wiki/index.php?title=English#ca._1100-1500_.09THE_MIDDLE_ENGLISH_PERIOD Middle English] ''amplifien'', from Middle French ''amplifier'', from [[Latin]] ''amplificare'', from ''amplus'' | ||
| − | *[ | + | *[https://en.wikipedia.org/wiki/14th_century 14th Century] |
==Definitions== | ==Definitions== | ||
*1: to expand (as a [[statement]]) by the use of detail or [[illustration]] or by closer [[analysis]] | *1: to expand (as a [[statement]]) by the use of detail or [[illustration]] or by closer [[analysis]] | ||
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Generally, an '''amplifier''' or simply amp, is a device for increasing the [[power]] of a [[signal]] by use of an external [[energy]] source. | Generally, an '''amplifier''' or simply amp, is a device for increasing the [[power]] of a [[signal]] by use of an external [[energy]] source. | ||
| − | In popular use, the term usually [[describes]] an [ | + | In popular use, the term usually [[describes]] an [https://en.wikipedia.org/wiki/Electronic_amplifier electronic amplifier], in which the input "signal" is usually a voltage or a current. In audio applications, amplifiers drive the loudspeakers used in [https://en.wikipedia.org/wiki/PA_system PA systems] to make the human [[voice]] louder or play recorded [[music]]. Amplifiers may be [[classified]] according to the input (source) they are [[designed]] to amplify (such as a [https://en.wikipedia.org/wiki/Guitar_amplifier guitar amplifier], to [[perform]] with an electric guitar), the device they are intended to drive (such as a headphone amplifier), the [[frequency]] range of the [[signals]] (Audio, IF, RF, and VHF amplifiers, for example), whether they invert the signal ([https://en.wikipedia.org/wiki/Inverting_amplifier inverting amplifiers] and non-inverting amplifiers), or the type of device used in the amplification ([https://en.wikipedia.org/wiki/Valve_amplifier valve or tube amplifiers], FET amplifiers, etc.). |
| − | A related device that emphasizes [[conversion]] of [[signals]] of one type to another (for example, a [[light]] signal in photons to a DC signal in amperes) is a [ | + | A related device that emphasizes [[conversion]] of [[signals]] of one type to another (for example, a [[light]] signal in photons to a DC signal in amperes) is a [https://en.wikipedia.org/wiki/Transducer transducer], a [https://en.wikipedia.org/wiki/Transformer transformer], or a sensor. However, none of these amplify [[power]].[https://en.wikipedia.org/wiki/Amplifier] |
[[Category: Physics]] | [[Category: Physics]] | ||
[[Category: General Reference]] | [[Category: General Reference]] | ||
Latest revision as of 23:47, 12 December 2020
Origin
Middle English amplifien, from Middle French amplifier, from Latin amplificare, from amplus
Definitions
- 1: to expand (as a statement) by the use of detail or illustration or by closer analysis
- 2a : to make larger or greater (as in amount, importance, or intensity) : increase
- b : to increase the strength or amount of; especially : to make louder
- c : to cause (a gene or DNA sequence) to undergo amplification
Description
Generally, an amplifier or simply amp, is a device for increasing the power of a signal by use of an external energy source.
In popular use, the term usually describes an electronic amplifier, in which the input "signal" is usually a voltage or a current. In audio applications, amplifiers drive the loudspeakers used in PA systems to make the human voice louder or play recorded music. Amplifiers may be classified according to the input (source) they are designed to amplify (such as a guitar amplifier, to perform with an electric guitar), the device they are intended to drive (such as a headphone amplifier), the frequency range of the signals (Audio, IF, RF, and VHF amplifiers, for example), whether they invert the signal (inverting amplifiers and non-inverting amplifiers), or the type of device used in the amplification (valve or tube amplifiers, FET amplifiers, etc.).
A related device that emphasizes conversion of signals of one type to another (for example, a light signal in photons to a DC signal in amperes) is a transducer, a transformer, or a sensor. However, none of these amplify power.[1]
