Objective: Record characteristics for a thermionic triode
In a thermionic triode, free electrons carry a flow of current between the heated cathode and the
anode when a positive voltage is applied between the cathode and anode. This current can be controlled
by applying a positive or negative voltage to an intervening grid.
![Experiment: Thermionic Triode (115 V, 50/60 Hz), 8000657 [UE3070200-115], Electron tubes](/imagelibrary/UE3070200-115/UE3070200-115_01_Experiment-Thermionic-Triode-115-V-5060-Hz.jpg)
![Experiment: Thermionic Triode (115 V, 50/60 Hz), 8000657 [UE3070200-115], Electron tubes](/thumblibrary/UE3070200-115/UE3070200-115_01_1200_1200_Experiment-Thermionic-Triode-115-V-5060-Hz.jpg)
