Introduced the grid for amplification.
Basic rectifiers, converting AC to DC.
Examples include "magic eye" tubes for signal display, thyratrons, and magnetrons. Key Technical Details vacuum tube
Positively charged electrode that attracts the electrons.
A glass or metal container that prevents air molecules from disrupting electron flow. Common Types Introduced the grid for amplification
Placed between cathode and anode to control the volume of electrons.
Heated (white-hot) to "boil off" electrons via thermionic emission. vacuum tube
A (or thermionic valve) is an electronic component that controls electric current flow within a high-vacuum sealed container. Primarily used in early electronics, they amplify, switch, or regulate signals by controlling the movement of electrons emitted from a heated surface. Core Components