transconductance


transconductance

[¦tranz·kən′dək·təns] (electronics) An electron-tube rating, equal to the change in plate current divided by the change in control-grid voltage that causes it, when the plate voltage and all other voltages are maintained constant. Also known as grid-anode transconductance; grid-plate transconductance; mutual conductance. Symbolized Gm ; gm . A field-effect-transistor rating, equal to the change in drain current divided by the change in gate-to-source voltage that causes it, when the drain voltage and all other voltages are maintained constant. Symbolized gfs . An amplifier parameter, equal to the change in output current divided by the change in input voltage that causes it. Symbolized gm .