Vacuum: Tube

Include additional grids to improve efficiency and reduce signal distortion.

Examples include "magic eye" tubes for signal display, thyratrons, and magnetrons. Key Technical Details

A glass or metal container that prevents air molecules from disrupting electron flow. Common Types 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

Placed between cathode and anode to control the volume of electrons. Include additional grids to improve efficiency and reduce

Introduced the grid for amplification.

Positively charged electrode that attracts the electrons. vacuum tube

Heated (white-hot) to "boil off" electrons via thermionic emission.