== Terminology == Transconductance is a contraction of transfer conductance. The old unit of conductance, the mho (ohm spelled backwards), was replaced by the SI unit, the siemens, with the symbol S (1 siemens = 1 ampere per volt). == Transresistance == The SI unit for transresistance is simply the ohm, as in resistance. == Devices == ===Vacuum tu...
ratio of the increment in the drain current to a corresponding incremental change of the gate-source voltage with the drain-source voltage held constantthe real component of the transadmittance