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A gain greater than one (greater than zero dB), that is, amplification, is the defining property of an active device or circuit, while a passive circuit will have a gain of less than one. [4] The term gain alone is ambiguous, and can refer to the ratio of output to input voltage (voltage gain), current (current gain) or electric power (power ...
For transistors, the current-gain–bandwidth product is known as the f T or transition frequency. [4] [5] It is calculated from the low-frequency (a few kilohertz) current gain under specified test conditions, and the cutoff frequency at which the current gain drops by 3 decibels (70% amplitude); the product of these two values can be thought of as the frequency at which the current gain ...
The operating power gain of a two-port network, G P, is defined as: = where P L is the maximum time-averaged power delivered to the load, where the maximization is over the load impedance, i.e., we desire the load impedance which maximizes the time-averaged power delivered to the load.
In electronics, a transimpedance amplifier (TIA) is a current to voltage converter, almost exclusively implemented with one or more operational amplifiers. The TIA can be used to amplify [ 1 ] the current output of Geiger–Müller tubes , photo multiplier tubes, accelerometers , photo detectors and other types of sensors to a usable voltage.
The net open-loop small-signal voltage gain of the op amp is determined by the product of the current gain h fe of some 4 transistors. In practice, the voltage gain for a typical 741-style op amp is of order 200,000, [16] and the current gain, the ratio of input impedance (~2−6 MΩ) to output impedance (~50 Ω) provides yet more (power) gain.
Gain (electronics), an electronics and signal processing term; Antenna gain; Gain (laser), the amplification involved in laser emission; Gain (projection screens) Information gain in decision trees, in mathematics and computer science; GAIN domain, a protein domain; Learning rate, a tuning parameter in stochastic approximation methods, also ...
At the World Economic Forum in Davos on Thursday, President Donald Trump boomed, “Canada has been very tough to deal with over the years. We don't need them to make our cars, and they make a lot ...
This is more commonly used than scalar linear gain and a positive quantity is normally understood as simply a "gain", while a negative quantity is a "negative gain" (a "loss"), equivalent to its magnitude in dB. For example, at 100 MHz, a 10 m length of cable may have a gain of −1 dB, equal to a loss of 1 dB.