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Electronic circuit
A linear amplifier is an electronic circuit whose output is proportional to its input, but capable of delivering more power into a load. The term usually
Linear_amplifier
Audio amplifier based on switching
operate as electronic switches, and not as linear gain devices as in other amplifier classes. Class-D amplifiers operate by rapidly switching back and forth
Class-D_amplifier
High-gain voltage amplifier with a differential input
An operational amplifier (often op amp, op-amp, or opamp) is a DC-coupled electronic amplifier with a differential input, a (usually) single-ended output
Operational_amplifier
Electronic device/component that increases the strength of a signal
An amplifier, electronic amplifier or (informally) amp is an electronic device that can increase the magnitude of a signal (a time-varying voltage or
Amplifier
Defunct pro audio manufacturer mainly known for its power amps
Phase Linear was an audio equipment manufacturer founded by Bob Carver and Steve Johnston in 1970. While primarily known as a power amplifier company
Phase_Linear
Classification of power amplifier
efficiency, linearity and other characteristics. Broadly, as you go through the alphabet, the amplifiers become more efficient but less linear, and the reduced
Power_amplifier_classes
Type of electronic amplifier
signal the amplifier (transistor or vacuum tube) where current is conducting. Class-A, class-AB and class-B are considered the linear amplifier classes in
RF_power_amplifier
Type of electronic 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
Direct-coupled_amplifier
Audio amplifier with power output sufficient to drive a loudspeaker
reduces distortion. Most audio amplifiers are linear amplifiers operating in class AB. Until the 1970s, most amplifiers used vacuum tubes. During the 1970s
Audio_power_amplifier
Logic gate implementing negation
steep and approximately linear, a properly-biased CMOS inverter digital logic gate may be used as a high-gain analog linear amplifier or even combined to
Inverter_(logic_gate)
Type of electronic circuit
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
Push–pull_output
English electronics engineer (1903–1942)
Palace. In June 1937, Blumlein patented what is now known as the Ultra-Linear amplifier (US Patent 2,218,902, dated 5 June 1937). A deceptively simple design
Alan_Blumlein
Electrical circuit
A log amplifier, which may spell log as logarithmic or logarithm and which may abbreviate amplifier as amp or be termed as a converter, is an electronic
Log_amplifier
Amplifier that uses quantum mechanical methods
optical amplifiers. The main figures of merit of a quantum amplifier are its gain and added noise. These parameters are not independent. In a linear amplifier
Quantum_amplifier
Characteristic of an electronic amplifier
which it differs from an ideal linear amplifier by more than 1 dB. So a larger 1-dB compression point means that the amplifier can produce larger outputs
Compression_point
Properties of mathematical relationships
linear equipment is a high fidelity audio amplifier, which must amplify a signal without changing its waveform. Others are linear filters, and linear
Linearity
Unity gain amplifier with low output impedance
In electronics, a buffer amplifier is a unity gain amplifier that copies a signal from one circuit to another while transforming its electrical impedance
Buffer_amplifier
Electrical circuit
a standard operational amplifier outputs a voltage. The OTA is usually used "open-loop"; without negative feedback in linear applications. This is possible
Operational transconductance amplifier
Operational_transconductance_amplifier
Operational amplifiers have several applications, optimised for use with negative feedback. When positive feedback is required, a comparator is usually
Operational amplifier applications
Operational_amplifier_applications
Type of electronic amplifier
when the circuit design allows. In simple configurations, such as linear amplifiers, a CFA can be used in place of a VFA with no circuit modifications
Current-feedback operational amplifier
Current-feedback_operational_amplifier
Amplifier that converts current to voltage
transimpedance amplifier (TIA) is a current to voltage converter, almost exclusively implemented with one or more operational amplifiers (opamps). The
Transimpedance_amplifier
Mathematical model which is both linear and time-invariant
electrical circuit consisting of resistors, capacitors, inductors and linear amplifiers. Linear time-invariant system theory is also used in image processing
Linear_time-invariant_system
Valve amplifier designed by David Theodore Nelson Williamson
The Williamson amplifier is a four-stage, push-pull, Class A triode-output valve audio power amplifier designed by David Theodore Nelson Williamson during
Williamson_amplifier
Topics referred to by the same term
Burner, a 500 bc BMX bike manufactured by Rudolph Company Slang for a linear amplifier for CB radios A heating element on a kitchen stove Tina Burner, American
Burner
Electronic circuit which counteracts non-linear behavior of an amplifier
In signal processing, linearizers are electronic circuits which improve the non-linear behaviour of amplifiers to increase efficiency and maximum output
Linearizer
Type of electronic circuit
of the term "Ultra Linear" to the conditions where the dynamic plate characteristic curves are most linear". The "QUAD II" amplifier from QUAD uses a circuit
Ultra-linear
Type of electronic amplifier
trades gain for higher linearity (reducing distortion) and can provide other benefits. If not designed correctly, amplifiers with negative feedback can
Negative-feedback_amplifier
Specific figure of merit in electronics
for weakly nonlinear systems and devices, for example receivers, linear amplifiers and mixers. It is based on the idea that the device nonlinearity can
Third-order_intercept_point
Topics referred to by the same term
Linear mode may refer to: Linear address mode Linear amplifier Linear mode (FET) Linear mode (JFET) Linear mode (MOSFET) Linear power supply Linear system
Linear_mode
Signal amplifier that doesn't significantly degrade the signal-noise ratio
A low-noise amplifier (LNA) is an electronic component that amplifies a very low-power signal without significantly degrading its signal-to-noise ratio
Low-noise_amplifier
Technical specifications and detailed information on the valve audio amplifier
Technical specifications and detailed information on the valve audio amplifier, including its development history. Vacuum tube characteristics (also called
Valve audio amplifier technical specification
Valve_audio_amplifier_technical_specification
Ability of a circuit to increase the power or amplitude of a signal
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
Gain_(electronics)
Numerical measures that characterize amplifier properties and performance
noise and linearity, among others listed in this article. Figures of merit are important for determining the suitability of a particular amplifier for an
Amplifier_figures_of_merit
Type of electronic 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. Low to medium
Valve_amplifier
Electronic component
com/technotes/technote3.pdf Error amplifier as an element in a voltage regulator: Stability analysis of low-dropout linear regulators with a PMOS pass element
Error_amplifier_(electronics)
Precision differential amplifier with input buffering
instrumentation amplifier (sometimes shorthanded as in-amp or InAmp) is a precision differential amplifier that has been outfitted with input buffer amplifiers, which
Instrumentation_amplifier
Background operating conditions for electronics
example of the need for careful biasing, consider a transistor amplifier. In linear amplifiers, a small input signal gives a larger output signal without
Biasing
Type of transistor
exclusively as an electrically controlled switch. The UJT is not used as a linear amplifier. It is used in free-running oscillators, synchronized or triggered
Unijunction_transistor
Device that amplifies an optical signal
amplifier is a device that amplifies an optical signal directly, without the need to first convert it to an electrical signal. An optical amplifier may
Optical_amplifier
DC linear voltage regulator
founded Linear Technology where he was the chief technology officer. The main components are a power FET and a differential amplifier (error amplifier). One
Low-dropout_regulator
Type of valve amplifier
A valve audio amplifier (UK) or vacuum tube audio amplifier (US) is a valve amplifier used for sound reinforcement, sound recording and reproduction.
Valve_audio_amplifier
Electronic amplifier that converts weak signal into strong signal
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
Preamplifier
Telecommunications and signal processing technique
a triplet of amplifiers: a logarithmic amplifier, followed by a variable-gain linear amplifier, and ending with an exponential amplifier. Such a triplet
Companding
Solid-state photodetector
operation without damage or undue noise. While an APD is able to act as a linear amplifier, the level of impact ionisation and avalanche within the SPAD has prompted
Single-photon_avalanche_diode
Amplifier for weak microwave signals
detection. This amplifier is based on parametric amplification of microwaves traveling through a transmission line with embedded non-linear elements. TWPAs
Traveling-wave parametric amplifier
Traveling-wave_parametric_amplifier
Type of radio frequency amplifier
The Doherty amplifier is a high-efficiency linear radio-frequency power amplifier originally developed for high-power amplitude-modulated broadcasting
Doherty_amplifier
Control concept
ISBN 978-1-4200-5888-8. G. Schitter; A. Rankers (2014). "§6.3.4 Linear amplifiers with operational amplifiers". The Design of High Performance Mechatronics. IOS Press
Negative_feedback
Electric circuit that generates sine waves
positive gain amplifier combined with a bandpass filter that provides positive feedback. Automatic gain control, intentional non-linearity, and incidental
Wien_bridge_oscillator
Electronic method of transmitting information with a carrier wave
special modulator produces such a waveform at a low level followed by a linear amplifier. What's more, a standard AM receiver using an envelope detector is
Amplitude_modulation
Electronic method of transmitting information with a carrier wave
the receiver antenna), switching amplifiers use less battery power and typically cost less than a linear amplifier. This gives FM another advantage over
Frequency_modulation
American electronics manufacturer
the 4-Line included a set of matching accessories including the L-4 linear amplifier, C-4 control console, W-4 and WV-4 power meters, transmit and receive
R._L._Drake_Company
Filter that has a linear response
electronic circuit consisting only of linear components (resistors, capacitors, inductors, and linear amplifiers) will necessarily fall in this category
Linear_filter
Electronic amplifier that varies its gain depending on a control input
electronics, a variable-gain amplifier (VGA) is one and the same as a voltage-controlled amplifier (VCA). A VCA is an electronic amplifier that varies its gain
Variable-gain_amplifier
Time behavior of a system controlled by Heaviside step functions
of linear dynamic systems, much can be inferred about the system from these characteristics. Below the step response of a simple two-pole amplifier is
Step_response
Electrical characteristic
current. For most transistors in linear operation it is well below 100 μS. A transconductance amplifier (gm amplifier) puts out a current proportional
Transconductance
Fission of a nucleus via absorption of a gamma ray
intense background of x-rays by a differential ionization chamber and linear amplifier, the substance investigated being coated on an electrode of one chamber
Photofission
Topics referred to by the same term
categories, in mathematics AB2, a variant of the Class AB amplifier (see also Linear amplifier § Amplifier classes) AB2, a rating within the seaman rank of the
AB2
Type of amplifier that emphasizes a specific frequency in a noisy signal
A lock-in amplifier is a type of amplifier that can extract a signal with a known carrier wave from an extremely noisy environment. Depending on the dynamic
Lock-in_amplifier
Relay station
frequency division multiplexing (FDM). Analog repeaters are composed of a linear amplifier, and may include electronic filters to compensate for frequency and
Repeater
Property of many linear time-invariant (LTI) systems
composed of resistors, capacitors, and/or inductors (and perhaps linear amplifiers) are generally IIR filters. On the other hand, discrete-time filters
Infinite_impulse_response
Land mobile radio system
connection. However, external linear amplifiers are often used illegally. During the 1970s, the FCC banned the sale of linear amplifiers capable of operation from
Citizens_band_radio
Type of electronic audio manipulation
(nonlinear) distortion is clipping in amplifier circuits and is most commonly known as overdrive. Clipping is a non-linear process that produces frequencies
Distortion_(music)
Citizens Band slang
Kicker/Footwarmer A linear amplifier used to illegally increase CB transmit power. A favorite tool of "Alligator Stations," "Bucket Mouths" and "Linear Lungs." Frowned
List_of_CB_slang
Circuit in a computer that maintains accurate time
signal is conditioned by a zero-crossing detector, either using a linear amplifier or a schmitt trigger. The result is a square wave with single, fast
Real-time_clock
non-linearities, mathematically simulating the large-signal transfer functions of various vacuum tubes and output transformers found in amplifier designs
Virtual_Valve_Amplifier
Technique used to improve radio transmitters
improve the linearity of radio transmitter amplifiers. Radio transmitter amplifiers in most telecommunications systems are required to be "linear", in that
Predistortion
Peak divided by the Root mean square (RMS) of the waveform
given linear amplifier has some "peak output power"—some maximum possible instantaneous peak amplitude it can support and still stay in the linear range;
Crest_factor
Current controlled voltage source electronic circuit
A Norton amplifier or current differencing amplifier (CDA) is an electronic amplifier with two low impedance current inputs and one low impedance voltage
Norton_amplifier
Electronic circuits obeying the superposition principle
electronic device that uses linear circuits is an amplifier. The superposition principle, the defining equation of linearity, is equivalent to two properties
Linear_circuit
Electromagnetic device
the core, a non-linear property of a certain class of transformer cores. For controlled saturation characteristics, the magnetic amplifier employs core materials
Magnetic_amplifier
Type of electronic amplifier using a bipolar junction transistor
common-emitter amplifier is one of three basic single-stage bipolar-junction-transistor (BJT) amplifier topologies, typically used as a voltage amplifier. It offers
Common_emitter
Change of voltage or current per unit of time
ringing or radiated interference. In amplifiers, limitations in slew rate capability can give rise to non-linear effects. For a sinusoidal waveform not
Slew_rate
American semiconductor company
mixed signal and linear integrated circuits (ICs). It was a pioneer in the fields of digital-to-analog converters and operational amplifiers. The company
Precision_Monolithics
European standard for trunked radio systems
within a minute on consumer hardware. (See Description) Requires a linear amplifier to meet the stringent RF specifications that allow it to exist alongside
TETRA
Characteristic quality of sounds from vacuum tube amplifiers
ideally flat response. Musical instrument amplifier design deliberately introduces distortion and great non-linearities in frequency response. Former offensiveness
Tube_sound
Reduction in gain due to nonlinearity
amplifying device for large-signal inputs. When operating an amplifier beyond its linear range, gain compression will occur due to nonlinear circuit characteristics
Gain_compression
ballistic deflection transistor would be significant in acting as both a linear amplifier and a switch for current flow on electronic devices, which could be
Ballistic deflection transistor
Ballistic_deflection_transistor
American inventor (born 1948)
cellular base station and the fibre optic microcell utilizing high power linear amplifier technology and digital modulation techniques. Russell has over 100
Jesse_Russell
American industrial company
conjunction with StingRay, Gossamer and Kingfish Harpoon 2008 $16,000–19,000 Linear amplifier to boost the signal of a StingRay or Kingfish Hailstorm ? $169,602
Harris_Corporation
Electric amplifier and loudspeaker
Problems playing this file? See media help. The Leslie speaker is a combined amplifier and loudspeaker that modifies the sound of an electric musical instrument
Leslie_speaker
British manufacturer of amateur radio equipment between 1950s and 1970s
201 receiver KW 202 receiver KW 204 transmitter KW 600 linear amplifier KW 1000 linear amplifier KW 2000 transceiver KW 2000A transceiver KW 2000B transceiver
K.W._Electronics
Emulation of an audio amplifier
outweigh the "romance" of tube amplifiers and that advances like machine learning are increasingly able to capture non-linear amp behaviors like power amp
Amplifier_modeling
Values which describe behavior of a linear electric circuit
behaves linearly with incident small signals. It may also include many typical communication system components or 'blocks' such as amplifiers, attenuators
Scattering_parameters
The Fender Bandmaster Reverb was a tube amplifier made by Fender. It was primarily a Silverface Bandmaster piggyback 'head' with the addition of reverb
Fender_Bandmaster_Reverb
Electronic amplifier for musical instruments
A bass amplifier (also abbreviated to bass amp) is a musical instrument electronic device that uses electrical power to make lower-pitched instruments
Bass_amplifier
Operational amplifier
The μA741 is an early operational amplifier (op amp) integrated circuit (IC), originally designed at Fairchild Semiconductor by Dave Fullagar and released
ΜA741
American manufacturer of hi-fi equipment
version of the Williamson amplifier using ultra-linear circuitry and Dynaco's new output transformers. The Williamson amplifier utilized a slightly different
Dynaco
Microwave signal amplifier
A traveling-wave tube (TWT, pronounced "twit") or traveling-wave tube amplifier (TWTA, pronounced "tweeta") is a specialized vacuum tube that is used
Traveling-wave_tube
Simple linear circuit
In electronics, a current divider is a simple linear circuit that produces an output current (IX) that is a fraction of its input current (IT). Current
Current_divider
Type of particle accelerator
otherwise necessary numerous klystron amplifiers to generate the acceleration power, a second parallel electron linear accelerator of lower energy is to be
Linear_particle_accelerator
Device for electrically amplifying the power of an electrical radio frequency signal
A valve RF amplifier (UK and Aus.) or tube amplifier (U.S.) is a device for electrically amplifying the power of an electrical radio frequency signal
Valve_RF_amplifier
Series of amateur radio transceivers
accessories were available, including the FV-101 remote VFO, FL-2100 Linear Amplifier, SP-101PB Phone Patch with Speaker or SP-101 Speaker-only, YO-100 or
Yaesu_FT-101
American electrical engineer
the negative feedback amplifier. Instead of trying to make the vacuum tube itself perfectly linear, the circuit used an amplifier with more gain than was
Harold_Stephen_Black
Indian computer scientist (1933–2025)
systems and S.M. thesis was on Effects of Parameter Variations in Linear Amplifiers. He wrote a monograph, History of Computing in India: 1955-2010, on
Vaidyeswaran_Rajaraman
Electronic amplifier, a circuit component
Isolation amplifiers are a form of differential amplifier that allow measurement of small signals in the presence of a high common mode voltage by providing
Isolation_amplifier
Gain in an electric amplifier
feedback amplifier terms "Open Loop Gain - Developer Help". developerhelp.microchip.com. Retrieved 2024-10-13. Zumbahlen, Hank (2008). "The Op Amp". Linear Circuit
Open-loop_gain
Topics referred to by the same term
performing common linear algebra operations Linear Algebra Package (LAPACK), a standard software library for numerical linear algebra Linear amplifier, a circuit
Linear_(disambiguation)
Figure of merit for amplifiers
(designated as GBWP, GBW, GBP, or GB) for an amplifier is a figure of merit calculated by multiplying the amplifier's bandwidth and the gain at which the bandwidth
Gain–bandwidth_product
a power pentode vacuum tube intended for 50 watt operation as a linear RF amplifier on frequencies up to 120 MHz. It is, in fact, a Soviet-produced copy
GU-50
Guitar amplifier made by Marshall
The Marshall Major (model 1967) was a guitar amplifier made by British manufacturer Marshall between 1967 and 1974. Initially dubbed the Marshall 200
Marshall_Major
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LINEAR AMPLIFIER
LINEAR AMPLIFIER
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