spark-coil

A mechanic tests the spark-coil in the workshop.

Definition

1. Noun:
   • Electrical component: A "spark-coil" is an induction coil used to produce a spark, typically in internal combustion engines (e.g., for igniting the fuel-air mixture in a spark plug) or in other devices requiring a high-voltage discharge.

Usage Examples

• Noun:
  • The mechanic replaced the faulty spark-coil in the car's ignition system. (The induction coil that generates the spark for the engine.)
  • Early radio transmitters often used a spark-coil to create high-voltage pulses. (The coil used for producing electrical sparks in early technology.)

Advanced Usage

• "spark-coil" in engineering contexts: Refers specifically to a type of induction coil designed for spark generation, distinct from other coils (e.g., chokes or transformers).
  • The spark-coil's primary winding is connected to a battery, and the secondary winding produces a high voltage across the spark gap. (Describes the coil's operational principle.)

Variants and Related Words

• Induction coil (n): a broader term for a coil that converts low-voltage direct current into high-voltage alternating current, of which a spark-coil is a subtype.
  • An induction coil is used in many electrical experiments. (A more general device.)
• Ignition coil (n): a specific type of spark-coil used in automotive ignition systems.
  • The ignition coil is a key component in a car's engine. (A synonym in automotive contexts.)

Synonyms

• Induction coil: a coil that produces high voltage via electromagnetic induction.
• Ignition coil: a coil specifically for engine ignition.
• Spark generator: a device that produces electrical sparks.

Related Idioms