inductive coupling
C2Technical
Definition
Meaning
The transfer of electrical energy from one circuit to another through a shared magnetic field created by changing current in the first circuit.
Any process where energy or information is transferred between two systems via an inductive effect, without a direct physical connection.
Linguistics
Semantic Notes
Strictly a noun phrase, always uncountable. Refers to the phenomenon itself, not the device. Often contrasted with 'capacitive coupling' or 'conductive coupling'.
Dialectal Variation
British vs American Usage
Differences
No significant lexical or spelling differences. Terminology is identical in professional contexts.
Connotations
Identical technical connotations in both varieties.
Frequency
Equally low-frequency and specialized in both UK and US English, used almost exclusively in electrical engineering and physics.
Vocabulary
Collocations
Grammar
Valency Patterns
Inductive coupling between [Noun Phrase 1] and [Noun Phrase 2]Inductive coupling via [Noun Phrase]The inductive coupling of [Noun Phrase 1] to [Noun Phrase 2]Vocabulary
Synonyms
Strong
Neutral
Weak
Vocabulary
Antonyms
Phrases
Idioms & Phrases
- “[None directly associated]”
Usage
Context Usage
Business
Rare, except in contexts involving wireless charging products (e.g., 'Our new phone uses inductive coupling for charging').
Academic
Common in electrical engineering, physics, and telecommunications papers discussing circuit theory and wireless power transfer.
Everyday
Extremely rare. The concept might be described as 'wireless charging' or 'charging pad' without using the term.
Technical
The primary context. Used to describe the fundamental operating principle of transformers, wireless chargers, some data transfer systems, and RFID/NFC technology.
Examples
By Part of Speech
verb
British English
- The circuits are inductively coupled.
- The designer coupled the stages inductively.
American English
- The two loops are inductively coupled.
- They coupled the power source to the load inductively.
adverb
British English
- [No common adverbial form. 'Inductively' is used separately.]
American English
- [No common adverbial form. 'Inductively' is used separately.]
adjective
British English
- The inductive coupling mechanism is very efficient.
- They preferred an inductive coupling solution.
American English
- The inductive coupling system worked flawlessly.
- An inductive coupling approach was chosen.
Examples
By CEFR Level
- This charger works without a plug. The phone sits on a pad.
- Wireless phone chargers use a special kind of connection that doesn't need wires.
- The technology behind wireless charging is called inductive coupling, where energy is transferred through a magnetic field.
- To minimise interference, the data channels were linked via loose inductive coupling rather than a direct conductive path.
Learning
Memory Aids
Mnemonic
Think of INDUCTIVE COUPLING as an invisible bridge. When a wire's current starts JUMPING (change), it creates a magnetic PUSH (induction) that can jiggle electrons in a nearby wire, COUPLING them together without touching.
Conceptual Metaphor
ENERGY TRANSFER IS A HAND-OFF. The first circuit 'hands off' energy to the second via an invisible magnetic 'hand' (the field).
Watch out
Common Pitfalls
Translation Traps (for Russian speakers)
- Avoid translating 'coupling' as 'сцепление' (which implies mechanical connection).
- Use 'индуктивная связь'. The Russian term 'связь' accurately reflects the 'connection' aspect without implying physical contact.
- Do not confuse with 'индукционная связь', which is less common.
Common Mistakes
- Incorrectly using as a countable noun (e.g., 'an inductive coupling'). It's uncountable.
- Confusing 'inductive' with 'inductive reasoning' from philosophy/logic.
- Using 'inductive coupling' to describe capacitive touchscreens (a different mechanism).
Practice
Quiz
Inductive coupling is most directly associated with which common device?
FAQ
Frequently Asked Questions
Inductive coupling is the fundamental physical principle that enables most common forms of wireless charging. Wireless charging is the application; inductive coupling is the mechanism.
Inductive coupling uses a changing magnetic field to transfer energy. Capacitive coupling uses a changing electric field between two conductors. They are different physical phenomena.
Typically, no. Standard inductive coupling is efficient only over very short distances (millimetres to a few centimetres), as the magnetic field strength drops off rapidly. Techniques like magnetic resonance coupling can extend this range slightly.
Yes, a classic example. The primary and secondary coils of a transformer are not electrically connected; energy is transferred entirely through inductive coupling via the shared magnetic field in the core.