solenoid
/'soulinɔid/
Học thuậtThân thiện
Definition
- Noun:
- An electromagnetic device: A solenoid is a physical component consisting of a coil of insulated wire wound in a helix, typically around a movable iron or steel core. It functions as an electromagnet when an electric current passes through the wire, generating a controlled magnetic field.
Usage and Examples
- Noun:
- The engineer replaced the faulty solenoid in the valve assembly.
- When activated, the solenoid creates a magnetic force that moves the metal plunger.
- A simple doorbell uses a solenoid to strike the bell.
Advanced Usage and Technical Context
- Electromechanical Actuator: In engineering, a solenoid's primary function is to convert electrical energy into linear mechanical motion. The magnetic field pulls the core into the center of the coil.
- The fuel injector is controlled by a high-speed solenoid.
- Inductor Component: In electrical circuits, a solenoid can be analyzed as an inductor, storing energy in its magnetic field.
- The circuit's inductance is largely determined by the solenoid.
Variants and Related Words
- Solenoidal (adjective): Pertaining to or having the form or properties of a solenoid.
- The solenoidal field was measured around the coil.
- Electromagnet: A broader term for a magnet created by electric current, often using a coil. A solenoid is a specific type of electromagnet designed to produce motion.
Synonyms
- Electromagnetic coil
- Actuator coil (in specific mechanical contexts)
Related Phrases and Compound Terms
- Solenoid valve: A common compound device where a solenoid controls the opening and closing of a fluid valve.
- The irrigation system is automated with solenoid valves.
- Solenoid lock: A locking mechanism engaged or released by a solenoid.
- The building uses electronic access with solenoid locks on all doors.
Noun
- a coil of wire around an iron core; becomes a magnet when current passes through the coil