Amplifier, the Glossary
An amplifier, electronic amplifier or (informally) amp is an electronic device that can increase the magnitude of a signal (a time-varying voltage or current).[1]
Table of Contents
201 relations: Active filter, Alternating current, Amplidyne, Amplitude, Amplitude modulation, Analog computer, Analogue electronics, AT&T, Audio power amplifier, Audion, Audiophile, Automatic gain control, Bandwidth (signal processing), Bell Labs, Biasing, BIBO stability, Bipolar junction transistor, Buffer amplifier, C. F. Varley, Capacitor, Carbon microphone, Charge-transfer amplifier, Chopper (electronics), Class-D amplifier, CMOS amplifier, Common base, Common collector, Common drain, Common emitter, Common gate, Common source, Communications satellite, Computer, Convection, Crossed-field amplifier, Crystal detector, Current sense amplifier, Current source, Dawon Kahng, DC motor, Decibel, Dependent source, Differential amplifier, Differential signalling, Digital electronics, Dimensionless quantity, Diode, Direct current, Direct-coupled amplifier, Distortion, ... Expand index (151 more) »
- Audiovisual introductions in 1906
Active filter
An active filter is a type of analog circuit implementing an electronic filter using active components, typically an amplifier.
See Amplifier and Active filter
Alternating current
Alternating current (AC) is an electric current that periodically reverses direction and changes its magnitude continuously with time, in contrast to direct current (DC), which flows only in one direction.
See Amplifier and Alternating current
Amplidyne
An amplidyne is an obsolete electromechanical amplifier invented prior to World War II by Ernst Alexanderson. Amplifier and amplidyne are electronic amplifiers.
Amplitude
The amplitude of a periodic variable is a measure of its change in a single period (such as time or spatial period).
Amplitude modulation
Amplitude modulation (AM) is a modulation technique used in electronic communication, most commonly for transmitting messages with a radio wave.
See Amplifier and Amplitude modulation
Analog computer
An analog computer or analogue computer is a type of computation machine (computer) that uses the continuous variation aspect of physical phenomena such as electrical, mechanical, or hydraulic quantities (analog signals) to model the problem being solved.
See Amplifier and Analog computer
Analogue electronics
Analogue electronics (analog electronics) are electronic systems with a continuously variable signal, in contrast to digital electronics where signals usually take only two levels.
See Amplifier and Analogue electronics
AT&T
AT&T Inc. is an American multinational telecommunications holding company headquartered at Whitacre Tower in Downtown Dallas, Texas.
Audio power amplifier
An audio power amplifier (or power amp) amplifies low-power electronic audio signals, such as the signal from a radio receiver or an electric guitar pickup, to a level that is high enough for driving loudspeakers or headphones.
See Amplifier and Audio power amplifier
Audion
The Audion was an electronic detecting or amplifying vacuum tube invented by American electrical engineer Lee de Forest as a diode in 1906. Amplifier and Audion are Audiovisual introductions in 1906.
Audiophile
An audiophile (from +) is a person who is enthusiastic about high-fidelity sound reproduction.
Automatic gain control
Automatic gain control (AGC) is a closed-loop feedback regulating circuit in an amplifier or chain of amplifiers, the purpose of which is to maintain a suitable signal amplitude at its output, despite variation of the signal amplitude at the input.
See Amplifier and Automatic gain control
Bandwidth (signal processing)
Bandwidth is the difference between the upper and lower frequencies in a continuous band of frequencies.
See Amplifier and Bandwidth (signal processing)
Bell Labs
Bell Labs is an American industrial research and scientific development company credited with the development of radio astronomy, the transistor, the laser, the photovoltaic cell, the charge-coupled device (CCD), information theory, the Unix operating system, and the programming languages B, C, C++, S, SNOBOL, AWK, AMPL, and others.
Biasing
In electronics, biasing is the setting of DC (direct current) operating conditions (current and voltage) of an electronic component that processes time-varying signals.
BIBO stability
In signal processing, specifically control theory, bounded-input, bounded-output (BIBO) stability is a form of stability for signals and systems that take inputs.
See Amplifier and BIBO stability
Bipolar junction transistor
A bipolar junction transistor (BJT) is a type of transistor that uses both electrons and electron holes as charge carriers.
See Amplifier and Bipolar junction transistor
Buffer amplifier
In electronics, a buffer amplifier is a unity gain amplifier that copies a signal from one circuit to another while transforming its electrical impedance to provide a more ideal source (with a lower output impedance for a voltage buffer or a higher output impedance for a current buffer). Amplifier and buffer amplifier are electronic amplifiers.
See Amplifier and Buffer amplifier
C. F. Varley
Cromwell Fleetwood Varley, FRSA (6 April 1828 – 2 September 1883) was an English engineer, particularly associated with the development of the electric telegraph and the transatlantic telegraph cable.
See Amplifier and C. F. Varley
Capacitor
In electrical engineering, a capacitor is a device that stores electrical energy by accumulating electric charges on two closely spaced surfaces that are insulated from each other.
Carbon microphone
The carbon microphone, also known as carbon button microphone, button microphone, or carbon transmitter, is a type of microphone, a transducer that converts sound to an electrical audio signal.
See Amplifier and Carbon microphone
Charge-transfer amplifier
The charge-transfer amplifier (CTA) is an electronic amplifier circuit. Amplifier and charge-transfer amplifier are electronic amplifiers.
See Amplifier and Charge-transfer amplifier
Chopper (electronics)
In electronics, a chopper circuit is any of numerous types of electronic switching devices and circuits used in power control and signal applications. Amplifier and chopper (electronics) are electronic circuits.
See Amplifier and Chopper (electronics)
Class-D amplifier
A class-D amplifier or switching amplifier is an electronic amplifier in which the amplifying devices (transistors, usually MOSFETs) operate as electronic switches, and not as linear gain devices as in other amplifiers. Amplifier and class-D amplifier are electronic amplifiers.
See Amplifier and Class-D amplifier
CMOS amplifier
CMOS amplifiers (complementary metal–oxide–semiconductor amplifiers) are ubiquitous analog circuits used in computers, audio systems, smartphones, cameras, telecommunication systems, biomedical circuits, and many other systems.
See Amplifier and CMOS amplifier
Common base
In electronics, a common-base (also known as grounded-base) amplifier is one of three basic single-stage bipolar junction transistor (BJT) amplifier topologies, typically used as a current buffer or voltage amplifier.
Common collector
In electronics, a common collector amplifier (also known as an emitter follower) is one of three basic single-stage bipolar junction transistor (BJT) amplifier topologies, typically used as a voltage buffer.
See Amplifier and Common collector
Common drain
In electronics, a common-drain amplifier, also known as a source follower, is one of three basic single-stage field-effect transistor (FET) amplifier topologies, typically used as a voltage buffer.
See Amplifier and Common drain
Common emitter
In electronics, a common-emitter amplifier is one of three basic single-stage bipolar-junction-transistor (BJT) amplifier topologies, typically used as a voltage amplifier.
See Amplifier and Common emitter
Common gate
In electronics, a common-gate amplifier is one of three basic single-stage field-effect transistor (FET) amplifier topologies, typically used as a current buffer or voltage amplifier.
Common source
In electronics, a common-source amplifier is one of three basic single-stage field-effect transistor (FET) amplifier topologies, typically used as a voltage or transconductance amplifier.
See Amplifier and Common source
Communications satellite
A communications satellite is an artificial satellite that relays and amplifies radio telecommunication signals via a transponder; it creates a communication channel between a source transmitter and a receiver at different locations on Earth.
See Amplifier and Communications satellite
Computer
A computer is a machine that can be programmed to automatically carry out sequences of arithmetic or logical operations (computation).
Convection
Convection is single or multiphase fluid flow that occurs spontaneously due to the combined effects of material property heterogeneity and body forces on a fluid, most commonly density and gravity (see buoyancy).
Crossed-field amplifier
A crossed-field amplifier (CFA) is a specialized vacuum tube, first introduced in the mid-1950s and frequently used as a microwave amplifier in very-high-power transmitters.
See Amplifier and Crossed-field amplifier
Crystal detector
A crystal detector is an obsolete electronic component used in some early 20th century radio receivers that consists of a piece of crystalline mineral which rectifies the alternating current radio signal.
See Amplifier and Crystal detector
Current sense amplifier
Current sense amplifiers (also called current shunt amplifiers) are special-purpose amplifiers that output a voltage proportional to the current flowing in a power rail. Amplifier and current sense amplifier are electronic amplifiers.
See Amplifier and Current sense amplifier
Current source
A current source is an electronic circuit that delivers or absorbs an electric current which is independent of the voltage across it.
See Amplifier and Current source
Dawon Kahng
Dawon Kahng (강대원; May 4, 1931 – May 13, 1992) was a Korean-American electrical engineer and inventor, known for his work in solid-state electronics.
DC motor
A DC motor is an electrical motor that uses direct current (DC) to produce mechanical force.
Decibel
The decibel (symbol: dB) is a relative unit of measurement equal to one tenth of a bel (B).
Dependent source
In the theory of electrical networks, a dependent source is a voltage source or a current source whose value depends on a voltage or current elsewhere in the network.
See Amplifier and Dependent source
Differential amplifier
A differential amplifier is a type of electronic amplifier that amplifies the difference between two input voltages but suppresses any voltage common to the two inputs. Amplifier and differential amplifier are electronic amplifiers.
See Amplifier and Differential amplifier
Differential signalling
Differential signalling is a method for electrically transmitting information using two complementary signals.
See Amplifier and Differential signalling
Digital electronics
Digital electronics is a field of electronics involving the study of digital signals and the engineering of devices that use or produce them.
See Amplifier and Digital electronics
Dimensionless quantity
Dimensionless quantities, or quantities of dimension one, are quantities implicitly defined in a manner that prevents their aggregation into units of measurement.
See Amplifier and Dimensionless quantity
Diode
A diode is a two-terminal electronic component that conducts current primarily in one direction (asymmetric conductance).
Direct current
Direct current (DC) is one-directional flow of electric charge.
See Amplifier and Direct current
Direct-coupled amplifier
A direct-coupled amplifier or DC amplifier is a type of amplifier in which the output of one stage of the amplifier is coupled to the input of the next stage in such a way as to permit signals with zero frequency, also referred to as direct current, to pass from input to output. Amplifier and direct-coupled amplifier are electronic amplifiers.
See Amplifier and Direct-coupled amplifier
Distortion
In signal processing, distortion is the alteration of the original shape (or other characteristic) of a signal.
Distributed amplifier
Distributed amplifiers are circuit designs that incorporate transmission line theory into traditional amplifier design to obtain a larger gain-bandwidth product than is realizable by conventional circuits. Amplifier and Distributed amplifier are electronic amplifiers.
See Amplifier and Distributed amplifier
Doherty amplifier
The Doherty amplifier is a modified class B radio frequency amplifier invented by William H. Doherty of Bell Telephone Laboratories Inc in 1936. Amplifier and Doherty amplifier are electronic amplifiers.
See Amplifier and Doherty amplifier
Double-tuned amplifier
A double-tuned amplifier is a tuned amplifier with transformer coupling between the amplifier stages in which the inductances of both the primary and secondary windings are tuned separately with a capacitor across each. Amplifier and double-tuned amplifier are electronic amplifiers.
See Amplifier and Double-tuned amplifier
Dynamic range
Dynamic range (abbreviated DR, DNR, or DYR) is the ratio between the largest and smallest values that a certain quantity can assume.
See Amplifier and Dynamic range
Electric current
An electric current is a flow of charged particles, such as electrons or ions, moving through an electrical conductor or space.
See Amplifier and Electric current
Electrical efficiency
The efficiency of a system in electronics and electrical engineering is defined as useful power output divided by the total electrical power consumed (a fractional expression), typically denoted by the Greek small letter eta (η – ήτα).
See Amplifier and Electrical efficiency
Electrical impedance
In electrical engineering, impedance is the opposition to alternating current presented by the combined effect of resistance and reactance in a circuit.
See Amplifier and Electrical impedance
Electrical load
An electrical load is an electrical component or portion of a circuit that consumes (active) electric power, such as electrical appliances and lights inside the home.
See Amplifier and Electrical load
Electrical network
An electrical network is an interconnection of electrical components (e.g., batteries, resistors, inductors, capacitors, switches, transistors) or a model of such an interconnection, consisting of electrical elements (e.g., voltage sources, current sources, resistances, inductances, capacitances).
See Amplifier and Electrical network
Electrical telegraph
Electrical telegraphy is a point-to-point text messaging system, primarily used from the 1840s until the late 20th century.
See Amplifier and Electrical telegraph
Electromagnetic spectrum
The electromagnetic spectrum is the full range of electromagnetic radiation, organized by frequency or wavelength.
See Amplifier and Electromagnetic spectrum
Electronic filter
Electronic filters are a type of signal processing filter in the form of electrical circuits. Amplifier and Electronic filter are electronic circuits.
See Amplifier and Electronic filter
Equivalent circuit
In electrical engineering, an equivalent circuit refers to a theoretical circuit that retains all of the electrical characteristics of a given circuit.
See Amplifier and Equivalent circuit
Faithful amplification
In electronics, faithful amplification is the amplification of a signal, particularly a weak one, by a triode or a transistor such that the signal changes in amplitude but not in shape. Amplifier and faithful amplification are electronic amplifiers.
See Amplifier and Faithful amplification
Feedback
Feedback occurs when outputs of a system are routed back as inputs as part of a chain of cause-and-effect that forms a circuit or loop.
Field-effect transistor
The field-effect transistor (FET) is a type of transistor that uses an electric field to control the flow of current in a semiconductor.
See Amplifier and Field-effect transistor
Filter (signal processing)
In signal processing, a filter is a device or process that removes some unwanted components or features from a signal.
See Amplifier and Filter (signal processing)
Frequency
Frequency (symbol f), most often measured in hertz (symbol: Hz), is the number of occurrences of a repeating event per unit of time.
Frequency multiplier
In electronics, a frequency multiplier is an electronic circuit that generates an output signal and that output frequency is a harmonic (multiple) of its input frequency.
See Amplifier and Frequency multiplier
Frequency response
In signal processing and electronics, the frequency response of a system is the quantitative measure of the magnitude and phase of the output as a function of input frequency.
See Amplifier and Frequency response
Fritz Zwicky
Fritz Zwicky (February 14, 1898 – February 8, 1974) was a Swiss astronomer.
See Amplifier and Fritz Zwicky
Fully differential amplifier
A fully differential amplifier (FDA) is a DC-coupled high-gain electronic voltage amplifier with differential inputs and differential outputs. Amplifier and fully differential amplifier are electronic amplifiers.
See Amplifier and Fully differential amplifier
Fundamental frequency
The fundamental frequency, often referred to simply as the fundamental, is defined as the lowest frequency of a periodic waveform.
See Amplifier and Fundamental frequency
Gain (electronics)
In electronics, gain is a measure of the ability of a two-port circuit (often an amplifier) to increase the power or amplitude of a signal from the input to the output port by adding energy converted from some power supply to the signal.
See Amplifier and Gain (electronics)
Gallium nitride
Gallium nitride is a binary III/V direct bandgap semiconductor commonly used in blue light-emitting diodes since the 1990s.
See Amplifier and Gallium nitride
Guitar
The guitar is a stringed musical instrument that is usually fretted (with some exceptions) and typically has six or twelve strings.
Gyrotron
High-power 140 GHz gyrotron for plasma heating in the Wendelstein 7-X fusion experiment, Germany. A gyrotron is a class of high-power linear-beam vacuum tubes that generates millimeter-wave electromagnetic waves by the cyclotron resonance of electrons in a strong magnetic field.
Harmonic
In physics, acoustics, and telecommunications, a harmonic is a sinusoidal wave with a frequency that is a positive integer multiple of the fundamental frequency of a periodic signal.
Harold Stephen Black
Harold Stephen Black (April 14, 1898 – December 11, 1983) was an American electrical engineer, who revolutionized the field of applied electronics by inventing the negative feedback amplifier in 1927.
See Amplifier and Harold Stephen Black
Harry Nyquist
Harry Nyquist (February 7, 1889 – April 4, 1976) was a Swedish-American physicist and electronic engineer who made important contributions to communication theory.
See Amplifier and Harry Nyquist
Headphone amplifier
A headphone amplifier is a low-powered audio amplifier designed particularly to drive headphones worn on or in the ears, instead of loudspeakers in speaker enclosures.
See Amplifier and Headphone amplifier
Hendrik Wade Bode
Hendrik Wade Bode (Van Valkenburg, M. E. University of Illinois at Urbana-Champaign, "In memoriam: Hendrik W. Bode (1905-1982)", IEEE Transactions on Automatic Control, Vol. AC-29, No 3., March 1984, pp. 193–194. Quote: "Something should be said about his name. To his colleagues at Bell Laboratories and the generations of engineers that have followed, the pronunciation is boh-dee.
See Amplifier and Hendrik Wade Bode
Heterojunction bipolar transistor
A heterojunction bipolar transistor (HBT) is a type of bipolar junction transistor (BJT) that uses different semiconductor materials for the emitter and base regions, creating a heterojunction.
See Amplifier and Heterojunction bipolar transistor
High fidelity
High fidelity (often shortened to Hi-Fi or HiFi) is the high-quality reproduction of sound.
See Amplifier and High fidelity
High-electron-mobility transistor
A high-electron-mobility transistor (HEMT or HEM FET), also known as heterostructure FET (HFET) or modulation-doped FET (MODFET), is a field-effect transistor incorporating a junction between two materials with different band gaps (i.e. a heterojunction) as the channel instead of a doped region (as is generally the case for a MOSFET).
See Amplifier and High-electron-mobility transistor
High-voltage direct current
A high-voltage direct current (HVDC) electric power transmission system uses direct current (DC) for electric power transmission, in contrast with the more common alternating current (AC) transmission systems.
See Amplifier and High-voltage direct current
Home cinema
A home cinema, also called a home theater or theater room, is a home entertainment audio-visual system that seeks to reproduce a movie theater experience and mood using consumer electronics-grade video and audio equipment and is set up in a room or backyard of a private home.
IMPATT diode
An IMPATT diode (impact ionization avalanche transit-time diode) is a form of high-power semiconductor diode used in high-frequency microwave electronics devices.
See Amplifier and IMPATT diode
Instrument amplifier
An instrument amplifier is an electronic device that converts the often barely audible or purely electronic signal of a musical instrument into a larger electronic signal to feed to a loudspeaker.
See Amplifier and Instrument amplifier
Integrated circuit
An integrated circuit (IC), also known as a microchip, computer chip, or simply chip, is a small electronic device made up of multiple interconnected electronic components such as transistors, resistors, and capacitors.
See Amplifier and Integrated circuit
An Intermediate power amplifier (IPA) is one stage of the amplification process in a radio transmitter which usually occurs prior to the final high power amplification. Amplifier and Intermediate power amplifier are electronic amplifiers.
See Amplifier and Intermediate power amplifier
Intermodulation
Intermodulation (IM) or intermodulation distortion (IMD) is the amplitude modulation of signals containing two or more different frequencies, caused by nonlinearities or time variance in a system.
See Amplifier and Intermodulation
ITU-R
The ITU Radiocommunication Sector (ITU-R) is one of the three sectors (divisions or units) of the International Telecommunication Union (ITU) and is responsible for radio communications.
John Bardeen
John Bardeen; May 23, 1908 – January 30, 1991) was an American physicist and electrical engineer. He is the only person to be awarded the Nobel Prize in Physics twice: first in 1956 with William Shockley and Walter Brattain for the invention of the transistor; and again in 1972 with Leon N. Cooper and John Robert Schrieffer for a fundamental theory of conventional superconductivity known as the BCS theory.
See Amplifier and John Bardeen
Klystron
A klystron is a specialized linear-beam vacuum tube, invented in 1937 by American electrical engineers Russell and Sigurd Varian,Pond, Norman H. "The Tube Guys".
LC circuit
An LC circuit, also called a resonant circuit, tank circuit, or tuned circuit, is an electric circuit consisting of an inductor, represented by the letter L, and a capacitor, represented by the letter C, connected together.
Lee de Forest
Lee de Forest (August 26, 1873 – June 30, 1961) was an American inventor, electrical engineer and an early pioneer in electronics of fundamental importance.
See Amplifier and Lee de Forest
Line driver
A line driver is an electronic amplifier circuit designed for driving a load such as a transmission line. Amplifier and line driver are electronic amplifiers.
Loop performance
Loop performance in control engineering indicates the performance of control loops, such as a regulatory PID loop.
See Amplifier and Loop performance
Loudspeaker
A loudspeaker (commonly referred to as a speaker or speaker driver) is an electroacoustic transducer that converts an electrical audio signal into a corresponding sound.
Louis Nashelsky
Louis Nashelsky, is a Professor of Electrical and Computer Technology at Queensborough Community College of the City University of New York (CUNY).
See Amplifier and Louis Nashelsky
Low-noise amplifier
A low-noise amplifier (LNA) is an electronic component that amplifies a very low-power signal without significantly degrading its signal-to-noise ratio (SNR). Amplifier and low-noise amplifier are electronic amplifiers.
See Amplifier and Low-noise amplifier
Magnetic amplifier
The magnetic amplifier (colloquially known as a "mag amp") is an electromagnetic device for amplifying electrical signals. Amplifier and magnetic amplifier are electronic amplifiers.
See Amplifier and Magnetic amplifier
Maser
A maser is a device that produces coherent electromagnetic waves (microwaves), through amplification by stimulated emission.
Mercury-vapor lamp
A mercury-vapor lamp is a gas-discharge lamp that uses an electric arc through vaporized mercury to produce light.
See Amplifier and Mercury-vapor lamp
Mobile phone
A mobile phone or cell phone is a portable telephone that can make and receive calls over a radio frequency link while the user is moving within a telephone service area, as opposed to a fixed-location phone (landline phone).
See Amplifier and Mobile phone
Modulation
In electronics and telecommunications, modulation is the process of varying one or more properties of a periodic waveform, called the carrier signal, with a separate signal called the modulation signal that typically contains information to be transmitted.
Mohamed M. Atalla
Mohamed M. Atalla (محمد عطاالله; August 4, 1924 – December 30, 2009) was an Egyptian-American engineer, physicist, cryptographer, inventor and entrepreneur.
See Amplifier and Mohamed M. Atalla
MOSFET
W and controlling a load of over 2000 W. A matchstick is pictured for scale. In electronics, the metal–oxide–semiconductor field-effect transistor (MOSFET, MOS-FET, or MOS FET) is a type of field-effect transistor (FET), most commonly fabricated by the controlled oxidation of silicon.
Negative feedback
Negative feedback (or balancing feedback) occurs when some function of the output of a system, process, or mechanism is fed back in a manner that tends to reduce the fluctuations in the output, whether caused by changes in the input or by other disturbances.
See Amplifier and Negative feedback
Negative resistance
In electronics, negative resistance (NR) is a property of some electrical circuits and devices in which an increase in voltage across the device's terminals results in a decrease in electric current through it.
See Amplifier and Negative resistance
Negative-feedback amplifier
A negative-feedback amplifier (or feedback amplifier) is an electronic amplifier that subtracts a fraction of its output from its input, so that negative feedback opposes the original signal. Amplifier and negative-feedback amplifier are electronic amplifiers.
See Amplifier and Negative-feedback amplifier
Noise (electronics)
In electronics, noise is an unwanted disturbance in an electrical signal.
See Amplifier and Noise (electronics)
Nonlinear system
In mathematics and science, a nonlinear system (or a non-linear system) is a system in which the change of the output is not proportional to the change of the input.
See Amplifier and Nonlinear system
Ohm
The ohm (symbol: Ω, the uppercase Greek letter omega) is the unit of electrical resistance in the International System of Units (SI).
Operating point
The operating point is a specific point within the operation characteristic of a technical device.
See Amplifier and Operating point
Operational amplifier
An operational amplifier (often op amp or opamp) is a DC-coupled electronic voltage amplifier with a differential input, a (usually) single-ended output, and an extremely high gain. Amplifier and operational amplifier are electronic amplifiers.
See Amplifier and Operational amplifier
Optical amplifier
An optical amplifier is a device that amplifies an optical signal directly, without the need to first convert it to an electrical signal.
See Amplifier and Optical amplifier
Oscillation
Oscillation is the repetitive or periodic variation, typically in time, of some measure about a central value (often a point of equilibrium) or between two or more different states.
Oscilloscope
An oscilloscope (informally scope or O-scope) is a type of electronic test instrument that graphically displays varying voltages of one or more signals as a function of time.
See Amplifier and Oscilloscope
Overshoot (signal)
In signal processing, control theory, electronics, and mathematics, overshoot is the occurrence of a signal or function exceeding its target.
See Amplifier and Overshoot (signal)
Parametric oscillator
A parametric oscillator is a driven harmonic oscillator in which the oscillations are driven by varying some parameters of the system at some frequencies, typically different from the natural frequency of the oscillator. Amplifier and parametric oscillator are electronic amplifiers.
See Amplifier and Parametric oscillator
Parasitic impedance
In electrical networks, a parasitic impedance is a circuit element (resistance, inductance or capacitance) which is not desirable in a electrical component for its intended purpose.
See Amplifier and Parasitic impedance
Parasitic oscillation
Parasitic oscillation is an undesirable electronic oscillation (cyclic variation in output voltage or current) in an electronic or digital device. Amplifier and Parasitic oscillation are electronic amplifiers.
See Amplifier and Parasitic oscillation
Passivity (engineering)
Passivity is a property of engineering systems, most commonly encountered in analog electronics and control systems.
See Amplifier and Passivity (engineering)
Phonograph
A phonograph, later called a gramophone (as a trademark since 1887, as a generic name in the UK since 1910), and since the 1940s a record player, or more recently a turntable, is a device for the mechanical and analogue reproduction of recorded sound.
The point-contact transistor was the first type of transistor to be successfully demonstrated.
See Amplifier and Point-contact transistor
Positive feedback
Positive feedback (exacerbating feedback, self-reinforcing feedback) is a process that occurs in a feedback loop which exacerbates the effects of a small disturbance.
See Amplifier and Positive feedback
Power amplifier classes
In electronics, power amplifier classes are letter symbols applied to different power amplifier types. Amplifier and power amplifier classes are electronic amplifiers.
See Amplifier and Power amplifier classes
Power gain
In electrical engineering, the power gain of an electrical network is the ratio of an output power to an input power.
Power law
In statistics, a power law is a functional relationship between two quantities, where a relative change in one quantity results in a relative change in the other quantity proportional to a power of the change, independent of the initial size of those quantities: one quantity varies as a power of another.
Power supply
A power supply is an electrical device that supplies electric power to an electrical load.
See Amplifier and Power supply
Power-added efficiency
Power-added efficiency (PAE) is a metric for rating the efficiency of a power amplifier that takes into account the effect of the gain of the amplifier. Amplifier and power-added efficiency are electronic amplifiers.
See Amplifier and Power-added efficiency
Preamplifier
A preamplifier, also known as a preamp, is an electronic amplifier that converts a weak electrical signal into an output signal strong enough to be noise-tolerant and strong enough for further processing, or for sending to a power amplifier and a loudspeaker. Amplifier and preamplifier are electronic amplifiers.
See Amplifier and Preamplifier
Precision rectifier
The precision rectifier is a configuration obtained with an operational amplifier in order to have a circuit behave like an ideal diode and rectifier.
See Amplifier and Precision rectifier
Printed circuit board
A printed circuit board (PCB), also called printed wiring board (PWB), is a medium used to connect or "wire" components to one another in a circuit.
See Amplifier and Printed circuit board
Programmable-gain amplifier
A programmable-gain amplifier (PGA) is an electronic amplifier (typically based on an operational amplifier) whose gain can be controlled by external digital or analog signals. Amplifier and programmable-gain amplifier are electronic amplifiers.
See Amplifier and Programmable-gain amplifier
Proportionality (mathematics)
In mathematics, two sequences of numbers, often experimental data, are proportional or directly proportional if their corresponding elements have a constant ratio.
See Amplifier and Proportionality (mathematics)
Public address system
A public address system (or PA system) is an electronic system comprising microphones, amplifiers, loudspeakers, and related equipment.
See Amplifier and Public address system
Push–pull output
A push–pull amplifier is a type of electronic circuit that uses a pair of active devices that alternately supply current to, or absorb current from, a connected load. Amplifier and push–pull output are electronic circuits.
See Amplifier and Push–pull output
Quadraphonic sound
Quadraphonic (or quadrophonic and sometimes quadrasonic) sound – equivalent to what is now called 4.0 surround sound – uses four audio channels in which speakers are positioned at the four corners of a listening space.
See Amplifier and Quadraphonic sound
Radar
Radar is a system that uses radio waves to determine the distance (ranging), direction (azimuth and elevation angles), and radial velocity of objects relative to the site.
Radio
Radio is the technology of communicating using radio waves.
Radio broadcasting
Radio broadcasting is the broadcasting of audio (sound), sometimes with related metadata, by radio waves to radio receivers belonging to a public audience.
See Amplifier and Radio broadcasting
Radio frequency
Radio frequency (RF) is the oscillation rate of an alternating electric current or voltage or of a magnetic, electric or electromagnetic field or mechanical system in the frequency range from around to around.
See Amplifier and Radio frequency
Radio receiver
In radio communications, a radio receiver, also known as a receiver, a wireless, or simply a radio, is an electronic device that receives radio waves and converts the information carried by them to a usable form.
See Amplifier and Radio receiver
Regenerative circuit
A regenerative circuit is an amplifier circuit that employs positive feedback (also known as regeneration or reaction). Amplifier and regenerative circuit are electronic circuits.
See Amplifier and Regenerative circuit
Relay
A relay Electromechanical relay schematic showing a control coil, four pairs of normally open and one pair of normally closed contacts An automotive-style miniature relay with the dust cover taken off A relay is an electrically operated switch.
Resistor
A resistor is a passive two-terminal electrical component that implements electrical resistance as a circuit element.
RF power amplifier
A radio-frequency power amplifier (RF power amplifier) is a type of electronic amplifier that converts a low-power radio-frequency (RF) signal into a higher-power signal. Amplifier and rF power amplifier are electronic amplifiers.
See Amplifier and RF power amplifier
RIAA equalization
RIAA equalization is a specification for the recording and playback of phonograph records, established by the Recording Industry Association of America (RIAA).
See Amplifier and RIAA equalization
Ringing (signal)
In electronics, signal processing, and video, ringing is oscillation of a signal, particularly in the step response (the response to a sudden change in input).
See Amplifier and Ringing (signal)
Rise time
In electronics, when describing a voltage or current step function, rise time is the time taken by a signal to change from a specified low value to a specified high value.
Roll-off
Roll-off is the steepness of a transfer function with frequency, particularly in electrical network analysis, and most especially in connection with filter circuits in the transition between a passband and a stopband.
Servo drive
A servo drive is an electronic amplifier used to power electric servomechanisms.
Servomechanism
In mechanical and control engineering, a servomechanism (also called servo system, or simply servo) is a control system for the position and its time derivatives, such as velocity, of a mechanical system.
See Amplifier and Servomechanism
Settling time
In control theory the settling time of a dynamical system such as an amplifier or other output device is the time elapsed from the application of an ideal instantaneous step input to the time at which the amplifier output has entered and remained within a specified error band.
See Amplifier and Settling time
Siemens (unit)
The siemens (symbol: S) is the unit of electric conductance, electric susceptance, and electric admittance in the International System of Units (SI).
See Amplifier and Siemens (unit)
Signal
Signal refers to both the process and the result of transmission of data over some media accomplished by embedding some variation.
Signal chain
Signal chain, or signal-processing chain is a term used in signal processing and mixed-signal system design to describe a series of signal-conditioning electronic components that receive input (data acquired from sampling either real-time phenomena or from stored data) sequentially, with the output of one portion of the chain supplying input to the next.
See Amplifier and Signal chain
Signal-to-noise ratio
Signal-to-noise ratio (SNR or S/N) is a measure used in science and engineering that compares the level of a desired signal to the level of background noise.
See Amplifier and Signal-to-noise ratio
Silicon carbide
Silicon carbide (SiC), also known as carborundum, is a hard chemical compound containing silicon and carbon.
See Amplifier and Silicon carbide
Silicon controlled rectifier
A silicon controlled rectifier or semiconductor controlled rectifier is a four-layer solid-state current-controlling device.
See Amplifier and Silicon controlled rectifier
Slew rate
In electronics and electromagnetics, slew rate is defined as the change of voltage or current, or any other electrical or electromagnetic quantity, per unit of time.
Solid-state electronics
Solid-state electronics are semiconductor electronics: electronic equipment that use semiconductor devices such as transistors, diodes and integrated circuits (ICs).
See Amplifier and Solid-state electronics
Sound
In physics, sound is a vibration that propagates as an acoustic wave through a transmission medium such as a gas, liquid or solid.
Sound film
A sound film is a motion picture with synchronized sound, or sound technologically coupled to image, as opposed to a silent film.
Sound recording and reproduction
Sound recording and reproduction is the electrical, mechanical, electronic, or digital inscription and re-creation of sound waves, such as spoken voice, singing, instrumental music, or sound effects.
See Amplifier and Sound recording and reproduction
Step response
The step response of a system in a given initial state consists of the time evolution of its outputs when its control inputs are Heaviside step functions. Amplifier and step response are electronic amplifiers.
See Amplifier and Step response
Stereophonic sound
Stereophonic sound, or more commonly stereo, is a method of sound reproduction that recreates a multi-directional, 3-dimensional audible perspective.
See Amplifier and Stereophonic sound
Stripline
In electronics, stripline is a transverse electromagnetic (TEM) transmission line medium invented by Robert M. Barrett of the Air Force Cambridge Research Centre in the 1950s. Amplifier and stripline are electronic circuits.
Subwoofer
A subwoofer (or sub) is a loudspeaker designed to reproduce low-pitched audio frequencies, known as bass and sub-bass, that are lower in frequency than those which can be (optimally) generated by a woofer.
Tape head
A tape head is a type of transducer used in tape recorders to convert electrical signals to magnetic fluctuations and vice versa.
Telegraphy
Telegraphy is the long-distance transmission of messages where the sender uses symbolic codes, known to the recipient, rather than a physical exchange of an object bearing the message.
Telephone
A telephone, colloquially referred to as a phone, is a telecommunications device that permits two or more users to conduct a conversation when they are too far apart to be easily heard directly.
Television
Television (TV) is a telecommunication medium for transmitting moving images and sound.
Tone control circuit
Tone control is a type of equalization used to make specific pitches or frequencies in an audio signal softer or louder.
See Amplifier and Tone control circuit
Torque
In physics and mechanics, torque is the rotational analogue of linear force.
Transconductance
Transconductance (for transfer conductance), also infrequently called mutual conductance, is the electrical characteristic relating the current through the output of a device to the voltage across the input of a device.
See Amplifier and Transconductance
Transfer function
In engineering, a transfer function (also known as system function or network function) of a system, sub-system, or component is a mathematical function that models the system's output for each possible input.
See Amplifier and Transfer function
Transformer
In electrical engineering, a transformer is a passive component that transfers electrical energy from one electrical circuit to another circuit, or multiple circuits.
Transistor
A transistor is a semiconductor device used to amplify or switch electrical signals and power.
Transistor radio
A transistor radio is a small portable radio receiver that uses transistor-based circuitry.
See Amplifier and Transistor radio
Transmission line
In electrical engineering, a transmission line is a specialized cable or other structure designed to conduct electromagnetic waves in a contained manner.
See Amplifier and Transmission line
Transmitter
In electronics and telecommunications, a radio transmitter or just transmitter (often abbreviated as XMTR or TX in technical documents) is an electronic device which produces radio waves with an antenna with the purpose of signal transmission up to a radio receiver.
Traveling-wave tube
A traveling-wave tube (TWT, pronounced "twit") or traveling-wave tube amplifier (TWTA, pronounced "tweeta") is a specialized vacuum tube that is used in electronics to amplify radio frequency (RF) signals in the microwave range.
See Amplifier and Traveling-wave tube
Triode
A triode is an electronic amplifying vacuum tube (or thermionic valve in British English) consisting of three electrodes inside an evacuated glass envelope: a heated filament or cathode, a grid, and a plate (anode). Amplifier and triode are Audiovisual introductions in 1906.
True RMS converter
For the measurement of an alternating current the signal is often converted into a direct current of equivalent value, the root mean square (RMS). Amplifier and True RMS converter are electronic amplifiers and electronic circuits.
See Amplifier and True RMS converter
Tube sound
Tube sound (or valve sound) is the characteristic sound associated with a vacuum tube amplifier (valve amplifier in British English), a vacuum tube-based audio amplifier.
Tuned amplifier
A tuned amplifier is an electronic amplifier which includes bandpass filtering components within the amplifier circuitry. Amplifier and tuned amplifier are electronic amplifiers.
See Amplifier and Tuned amplifier
Tunnel diode
A tunnel diode or Esaki diode is a type of semiconductor diode that has effectively "negative resistance" due to the quantum mechanical effect called tunneling.
See Amplifier and Tunnel diode
Twisted pair
Twisted pair cabling is a type of communications cable in which two conductors of a single circuit are twisted together for the purposes of improving electromagnetic compatibility.
See Amplifier and Twisted pair
Two-port network
In electronics, a two-port network (a kind of four-terminal network or quadripole) is an electrical network (i.e. a circuit) or device with two pairs of terminals to connect to external circuits.
See Amplifier and Two-port network
Vacuum tube
A vacuum tube, electron tube, valve (British usage), or tube (North America) is a device that controls electric current flow in a high vacuum between electrodes to which an electric potential difference has been applied.
Valve amplifier
A valve amplifier or tube amplifier is a type of electronic amplifier that uses vacuum tubes to increase the amplitude or power of a signal.
See Amplifier and Valve amplifier
Variable-gain amplifier
A variable-gain (VGA) or voltage-controlled amplifier (VCA) is an electronic amplifier that varies its gain depending on a control voltage (often abbreviated CV). Amplifier and variable-gain amplifier are electronic amplifiers.
See Amplifier and Variable-gain amplifier
Voltage
Voltage, also known as (electrical) potential difference, electric pressure, or electric tension is the difference in electric potential between two points.
Voltage source
A voltage source is a two-terminal device which can maintain a fixed voltage.
See Amplifier and Voltage source
Walter Houser Brattain
Walter Houser Brattain (February 10, 1902 – October 13, 1987) was an American physicist at Bell Labs who, along with fellow scientists John Bardeen and William Shockley, invented the point-contact transistor in December 1947.
See Amplifier and Walter Houser Brattain
William Shockley
William Bradford Shockley Jr. (February 13, 1910 – August 12, 1989) was an American inventor, physicist, and eugenicist.
See Amplifier and William Shockley
YouTube
YouTube is an American online video sharing platform owned by Google.
See also
Audiovisual introductions in 1906
References
[1] https://en.wikipedia.org/wiki/Amplifier
Also known as Amplifier class, Amplifier stage, Amplifiers, Amplifire, Ampllifiers, Bilateral amplifier, Cathode follower, Common cathode, Common grid, Common plate, Common-cathode, Current amplifier, Electronic amplification, Electronic amplifier, Electronic amplifiers, Microwave amplifier, Non-inverting amplifier, Penguat peralatan, Piezo Audio Amplifier, Piezoelectric audio amplifier, Power Amplifier, Signal amplifier, Signal amplifiers, Single stage amplifier, Sound amplification, Transistor amplifier, Unilateral amplifier, Video amplifier, Voltage amplifier.
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