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Definition of "Transconductance" |
The gain of a transconductance amplifier (an amp in which a change in input voltage causes a linear change in output current). The basic gain of vacuum tubes and FETs is expressed as transconductance. It is represented with the symbol gm. The term derives from "transfer conductance" and is measured in siemens (S), where 1 siemens = 1 ampere per volt. It was formerly measured as "mho" (ohm spelled backwards). / Transconductance is a ratio of the change in plate current to a change in grid voltage with the plate voltage held constant. Transconductance (gm) is usually expressed in micromhos or millimhos. / Transconductance is the property of certain electronic components. Conductance is the reciprocal of resistance; transconductance is the ratio of the current change at the output port to the voltage change at the input port. / In a conventional, analog two-way radio system, a standard radio has noise squelch or carrier squelch which allows a radio to receive all transmissions. Selective calling is used to address a subset of all two-way radios on a single radio frequency channel. / (1) a quantity used to specify a field-effect transistor, defined as the differential change in drain current upon a differential change in gate voltage. |
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