Definition

Noun: A choking coil is an electrical component consisting of a coil of wire wound around a core. Its primary function is to allow direct current (DC) to pass through with little resistance while impeding or "choking" the flow of alternating current (AC) due to its high inductance.

Usage

The term is used in the context of electrical engineering and circuit design to describe a specific type of inductor used for filtering or current-limiting purposes. * It is often placed in series within a power supply circuit to smooth out or block unwanted AC components from a DC signal. * It is a technical term, primarily found in textbooks, datasheets, and technical discussions.

Examples

• In Circuit Design:
  • A choking coil was added to the power line to suppress high-frequency noise.
  • The design uses a choking coil to prevent the alternating current from reaching the sensitive DC components.
• In Description:
  • The old radio receiver relied on a choking coil for its filtering stage.
  • The property of high inductance makes the choking coil effective at attenuating AC.

Advanced Usage

• Technical Specification: The effectiveness of a choking coil is determined by its inductance value (measured in Henries) and its current-handling capacity.
  • Select a choking coil with an inductance of at least 10 mH for adequate filtering.

Variants and Related Words

• Choke (noun): A common shortened form of "choking coil."
  • The circuit diagram indicates a choke at the input.
• Inductor (noun): The general category of electrical components to which a choking coil belongs. All choking coils are inductors, but not all inductors are designed specifically as chokes.
• RF Choke (noun): A specific type of choking coil designed to block radio frequency (RF) alternating currents while allowing DC and audio frequencies to pass.

Synonyms

• Choke: (The most direct synonym, as it is an abbreviation).
• Inductor: (A broader, more general synonym).

Related Phrases

• To choke off (a signal): This phrasal verb describes the action performed by the coil.
  • The coil is designed to choke off any alternating current.

Noun

1. a coil of low resistance and high inductance used in electrical circuits to pass direct current and attenuate alternating current