Objective: Record the characteristic for a thermionic diode
In a thermionic diode, 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. The current increases along with the voltage until a saturation point is reached. However, if the voltage is negative, the current is zero.
![Experiment: Thermionic Diode (230 V, 50/60 Hz), 8000656 [UE3070100-230], Electron tubes](/imagelibrary/UE3070100-230/UE3070100-230_01_Experiment-Thermionic-Diode-230-V-5060-Hz.jpg)
![Experiment: Thermionic Diode (230 V, 50/60 Hz), 8000656 [UE3070100-230], Electron tubes](/thumblibrary/UE3070100-230/UE3070100-230_01_1200_1200_Experiment-Thermionic-Diode-230-V-5060-Hz.jpg)
