In electronics, gain is a measure of the ability of a circuit (often an amplifier) to increase the power or amplitude of a signal from the input to the output. It is usually defined as the mean ratio of the signal output of a system to the signal input of the same system. It may also be defined on a logarithmic scale, in terms of the decimal logarithm of the same ratio ("dB gain"). A gain greater than one (zero dB), that is, amplification, is the defining property of an active component or circuit, while a passive circuit will have a gain of less than one.
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Some articles on gain:
... little loss, so the directivity of a horn is roughly equal to its gain ... The gain G of a pyramidal horn antenna (the ratio of the radiated power intensity along its beam axis to the intensity of an isotropic antenna with the same ...
... An example of a non-unity-gain bandpass filter implemented with a VCVS filter is shown in Figure 5 ... an operational amplifier configured to provide non-unity-gain, it can be analyzed using similar methods as with the generic Sallen–Key topology ... given by The voltage divider in the negative feedback loop controls the gain ...
... What is its voltage and power gain? A ... Voltage gain is simply The units V/V are optional, but make it clear that this figure is a voltage gain and not a power gain ... Using the expression for power, P = V2/R, the power gain is Again, the units W/W are optional ...
More definitions of "gain":
- (verb): Increase (one's body weight).
Synonyms: put on
- (verb): Increase in.
Example: "Gain momentum"; "gain nerve"
- (noun): The amount by which the revenue of a business exceeds its cost of operating.
- (verb): Rise in rate or price.
- (verb): Obtain.
- (verb): Earn on some commercial or business transaction; earn as salary or wages.
Synonyms: take in, clear, make, earn, realize, realise, pull in, bring in
- (verb): Win something through one's efforts.
Example: "Gain an understanding of international finance"
Synonyms: acquire, win
- (noun): The amount of increase in signal power or voltage or current expressed as the ratio of output to input.
- (verb): Obtain advantages, such as points, etc..
Synonyms: advance, win, pull ahead, make headway, get ahead, gain ground
Famous quotes containing the word gain:
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—Friedrich Nietzsche (18441900)
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—Abraham Lincoln (18091865)