Amplifiers Amplifiers An amplifier can be considered to be any device that uses a small amount of energy to control a larger amount, although the term today usually refers to an electronic amplifier. The relationship of the input to the output of an amplifier — usually expressed as a function of the input frequency — is called the transfer function of the amplifier, and the magnitude of the transfer function is termed the gain. ...more on Wikipedia about "Amplifier"
(Asymptotic gain model) A negative feedback system can be described by the following equations (a picture would be nice): ...more on Wikipedia about "Asymptotic gain model"
Cycling probe technology (CPT) is a molecular biological technique for amplifying (creating multiple copies of) DNA without using a living organism, such as E. coli or yeast. CPT may in the future become a viable alternative to PCR. Unlike PCR, CPT requires only isothermal conditions. Tang et al. (as cited in "References") developed an integrated electrokinetic system for use in CPT. ...more on Wikipedia about "Cycling probe technology"
A FERRACTOR amplifier is a type of magnetic amplifier circuit built with Ferractor®s (a type of transformer wound on a saturable core having a nearly rectangular hysteresis loop with two stable states). UNIVAC used them in the logic circuits of some of their computers in the late 1950s and early 1960s instead of vacuum tube or transistor electronic amplifiers. ...more on Wikipedia about "FERRACTOR amplifier"
An integrated amplifier is an electronic device containing an audio preamplifier and amplifier in one unit, as opposed to separating the two. Most modern audio amplifiers are integrated and have several inputs for devices such as CD players, DVD players, and auxiliary sources. Integrated amplifiers commonly had dedicated inputs for turntables, AM/ FM tuner, and tape recorders ( cassette or reel-to-reel) back when those devices were more common. An amplifier integrated with an AM/FM tuner in addition to the preamplifier is called a receiver . ...more on Wikipedia about "Integrated amplifier"
In optics, an optical amplifier is a device that amplifies an optical signal directly, without the need to first convert it to an electrical signal, then amplify it electrically, and finally reconvert it to an optical signal. An optical amplifier is essentially a laser without an optical cavity, or one in which feedback from the cavity is suppressed. Stimulated emission in the amplifier's gain medium causes amplification of incoming light. ...more on Wikipedia about "Optical amplifier"
Polymerase chain reaction (PCR) is a molecular biology technique for enzymatically replicating DNA without using a living organism, such as E. coli or yeast. The technique allows a small amount of the DNA molecule to be amplified many times, in an exponential manner. With more DNA available, analysis is made much easier. PCR is commonly used in medical and biological research labs for a variety of tasks, such as the detection of hereditary diseases, the identification of genetic fingerprints, the diagnosis of infectious diseases, the cloning of genes, and paternity testing. ...more on Wikipedia about "Polymerase chain reaction"
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Protein Misfolding Cyclic Amplification (PMCA) is an amplification technique (like PCR) to multiply misfolded prions. It is a test for spongiform encephalopathies like BSE. ...more on Wikipedia about "Protein Misfolding Cyclic Amplification"
(Q-PCR) PCR (Polymerase Chain Reaction) is the process used to amplify DNA samples, via the temperature-mediated enzyme DNA polymerase. ...more on Wikipedia about "Q-PCR"
A servomechanism, usually shortened to just servo, is a device used to provide mechanical control at a distance. For example, a servo can be used at a remote location to proportionally follow the angular position of a control knob. The connection between the two is not mechanical, but electrical or wireless, for example. ...more on Wikipedia about "Servomechanism"
VFB can stand for: ...more on Wikipedia about "VFB"
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