Examples include "magic eye" tubes for signal display, thyratrons, and magnetrons. Key Technical Details
Placed between cathode and anode to control the volume of electrons. vacuum tube
Positively charged electrode that attracts the electrons. Examples include "magic eye" tubes for signal display,
Heated (white-hot) to "boil off" electrons via thermionic emission. vacuum tube
Include additional grids to improve efficiency and reduce signal distortion.