Electronic amplifiers

high-gain voltage amplifier with a differential input

thumb|A McIntosh Laboratory|McIntosh stereo audio amplifier with output power of 50 watts per channel used in home component audio systems in the 1970s.

graph of the frequency response of a linear system presented in logarithmic scale

thumb|right|An example of a typical high-end Stereophonic sound|stereo preamplifier

right|thumb|Metal filings coherer designed by Guglielmo Marconi, consisting of a tube containing two electrodes spaced a small distance apart, with metal filings in the space between them The coherer was a primitive form of radio signal detector used in the first radio receivers during the wireless telegraphy era at the beginning of the 20th century. Its use in radio was based on the 1890 findings of French physicist Édouard Branly and adapted by other physicists and inventors over the next ten years. The device consists of a tube or capsule containing two electrodes spaced a small distance a

electronic amplifier, a circuit component

type of parametric amplifier

electronic amplifier, a circuit component

Mathematic test in control system theory

thumb|right|300 px|Two horizontal rows of arc-shaped dynodes in a photomultiplier tube. A dynode is an electrode in a vacuum tube that serves as an incident charge multiplier through secondary emission. The first tube to incorporate a dynode was the dynatron, an ancestor of the magnetron, which used a single dynode. Photomultiplier and video camera tubes generally include a series of dynodes, each at a more positive electrical potential than its predecessor. Secondary emission occurs at the surface of each dynode. Such an arrangement is able to amplify the tiny current emitted by the photocath

amplifier type which can extract a signal with a known carrier wave from an extremely noisy environment

electronic amplifier, a circuit component

time behavior

audio amplifier based on digital switching

electronic amplifier that varies its gain depending on a control voltage

signal amplifier that doesn't worsen the signal-noise ratio

amplifier that converts current to voltage

harmonic oscillator whose parameters oscillate in time

operational amplifier that uses current, rather than voltage, as the feedback signal

Type of electronic amplifier

detailed list of principal circuits built around operational amplifier

amplifier applied on high frequency signals coming from an antenna

product of amplifier midband gain and bandwidth

type of electronic amplifier

current integrator which produces a voltage output proportional to the integrated value of the input current

amplifier stage used to raise signal levels in radio and television receivers

Parameter of electronic amplifiers

electronic amplifier, a circuit component

Operational transconductance amplifier

type of laser light source that emits light of variable wavelengths

sum of the gain around a feedback loop

direct electrical contact between two electrical networks or stages

Specific figure of merit in telecommunications

a three-terminal electronic building block, an ideal "triode" with current and voltage input and current output

configuration of an operational amplifier which acts as a negative load

tuned amplifier with transformer coupling between the amplifier stages

thumb|Three amplidynes, from a 1951 General Electric advertisement (not to same scale). (top left) 1 kW amplidyne motor–generator, (bottom left) 3 kW amplidyne motor–generator, (right) 5 kW amplidyne generator. thumb|Figure 1 of the patent drawing

amplifier consisting of two or more simple amplifiers connected in series

type of electronic distortion

type of amplifier