Positively charged electrode that attracts the electrons.
A glass or metal container that prevents air molecules from disrupting electron flow. Common Types
Examples include "magic eye" tubes for signal display, thyratrons, and magnetrons. Key Technical Details vacuum tube
Basic rectifiers, converting AC to DC.
Introduced the grid for amplification.
Heated (white-hot) to "boil off" electrons via thermionic emission.
Placed between cathode and anode to control the volume of electrons. Positively charged electrode that attracts the electrons
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