vacuum-tube

A technician carefully replaces a vacuum-tube in an old radio.

Definition

1. Noun:
   • Electron tube: A "vacuum-tube" is an electronic device consisting of a sealed glass or metal container from which most air has been removed, containing electrodes between which electrons flow to control electrical current, used historically in radios, televisions, and early computers.

Usage Examples

• Noun:
  • The old radio uses a vacuum-tube to amplify the signal. (The device relies on an electron tube for amplification.)
  • Before transistors, vacuum-tubes were essential components in electronic circuits. (These tubes were key in early electronics.)

Advanced Usage

• "vacuum-tube technology": The field or practice of using vacuum-tubes in electronic devices.

  • Vintage audio enthusiasts often prefer vacuum-tube technology for its warm sound. (They favour the older tube-based systems.)

• "vacuum-tube amplifier": An amplifier that uses vacuum-tubes to increase signal strength.

  • Guitarists sometimes use a vacuum-tube amplifier for a richer tone. (The amplifier employs tubes for sound quality.)

Variants and Related Words

• Vacuum-tube (adj): relating to or using a vacuum-tube.

  • The vacuum-tube circuit was carefully designed by the engineer. (The circuit uses electron tubes.)

• Tube (n): a shortened, informal term for a vacuum-tube.

  • He replaced the broken tube in the amplifier. (He swapped the faulty vacuum-tube.)

Synonyms

• Electron tube: a technical synonym emphasizing the flow of electrons.
• Valve: a British English term for vacuum-tube, especially in audio contexts.

Related Idioms

• "blow a tube": (informal) to cause a vacuum-tube to fail or burn out.
  • The amplifier stopped working when he blew a tube during the concert. (A tube failed due to overload.)