barretter
Very Rare / Technical / ObsoleteFormal Technical / Historical
Definition
Meaning
A resistor whose electrical resistance varies with temperature, used as a current stabiliser.
In historical electronics, a type of early thermal current regulator or iron-hydrogen resistor, typically a fine iron wire in a hydrogen-filled bulb, used in radio circuits.
Linguistics
Semantic Notes
This is an obsolete technical term from early 20th-century electronics and radio engineering. It is seldom encountered outside of historical texts, museum descriptions, or discussions of antique radio technology. It is functionally equivalent to a ballast resistor or current stabiliser.
Dialectal Variation
British vs American Usage
Differences
No significant usage differences exist, as the term is uniformly technical and obsolete. Historical British texts might use 'barreter' or 'barretter', while American texts favour 'barretter', but the distinction is not consistent.
Connotations
Purely technical and historical in both variants. Evokes early radio technology, crystal sets, and vacuum tube era.
Frequency
Extremely rare in both varieties. Slightly more likely to be found in American texts on the history of radio.
Vocabulary
Collocations
Grammar
Valency Patterns
The barretter was used in [circuit type]A barretter stabilises the [current/voltage]Connect the barretter in series with the [load/device]Vocabulary
Synonyms
Strong
Neutral
Weak
Vocabulary
Antonyms
Usage
Context Usage
Business
Not used.
Academic
Used only in historical papers on electrical engineering or the history of technology.
Everyday
Virtually never used.
Technical
The sole context; refers to a specific obsolete component in electronics and radio engineering.
Examples
By Part of Speech
adjective
British English
- The barretter principle is fascinating.
- He studied barretter-based regulation.
American English
- The barretter circuit was patented in 1902.
- Barretter technology is obsolete.
Examples
By CEFR Level
- The old radio used a special part called a barretter.
- To stabilise the filament current, early radio designers employed a device known as a barretter.
- The barretter, an iron wire within a hydrogen-filled envelope, functioned as a self-regulating current ballast due to its positive temperature coefficient of resistance.
Learning
Memory Aids
Mnemonic
Think of a BAR that RETARDS or regulates the flow of current – a BAR-RETTER.
Conceptual Metaphor
A THERMOSTAT FOR CURRENT: Just as a thermostat uses temperature change to regulate heat, a barretter uses temperature change (from current flow) to regulate current.
Watch out
Common Pitfalls
Translation Traps (for Russian speakers)
- Do not confuse with 'бареттер' (a direct transliteration). No common Russian equivalent exists; it must be described as 'баластный резистор' (ballast resistor) or 'терморезистор для стабилизации тока' (thermistor for current stabilisation).
Common Mistakes
- Misspelling as 'barreter' or 'barretor'.
- Confusing it with a modern thermistor (which is a temperature sensor, not primarily a current stabiliser).
- Using it in contemporary technical writing without historical qualification.
Practice
Quiz
What is the primary function of a barretter?
FAQ
Frequently Asked Questions
No, it is a completely obsolete component. Modern circuits use semiconductor-based current regulators or different types of ballast resistors.
Typically, it resembled a small light bulb (envelope) containing a fine iron wire and filled with hydrogen.
Hydrogen was used because it efficiently transfers heat from the wire to the glass envelope, preventing overheating and allowing for quicker thermal response.
Not as new production. They are only available as parts salvaged from antique equipment or as rare historical reproductions for museum displays.