deflection yoke
Very Low (Technical/Specialist)Technical, Historical Technology
Definition
Meaning
A device used in cathode-ray tube (CRT) displays, such as old television sets and computer monitors, to control the path of the electron beam that scans the screen, creating the image.
In a broader engineering context, any component designed to steer or bend a stream of charged particles or electromagnetic energy via magnetic fields.
Linguistics
Semantic Notes
This is a highly specific compound noun from electronics and television engineering. Its meaning is opaque without knowledge of CRT technology. It is now primarily encountered in historical, repair, or recycling contexts.
Dialectal Variation
British vs American Usage
Differences
No difference in meaning. The term is identical in both technical registers.
Connotations
Evokes mid-to-late 20th-century technology. In both regions, it is associated with repair manuals, electronics hobbyists, and obsolete equipment.
Frequency
Extremely rare in general discourse. Frequency would have been higher in specialist publications during the CRT era (pre-2000s).
Vocabulary
Collocations
Grammar
Valency Patterns
The [deflection yoke] is attached to the [CRT neck].[To calibrate] the [deflection yoke].[A yoke] for [deflecting] the [electron beam].Vocabulary
Synonyms
Neutral
Weak
Usage
Context Usage
Business
Virtually never used. Might appear in very specific e-waste recycling or historical equipment sales.
Academic
Used in historical papers on display technology, physics of electron beams, or media archaeology studies.
Everyday
Extremely rare. Used only when discussing the repair or disposal of very old TVs/monitors.
Technical
The primary domain. Used in electronics engineering textbooks, repair guides, and component datasheets for CRT-based equipment.
Examples
By Part of Speech
adjective
British English
- The deflection-yoke assembly was faulty.
- We need a yoke-replacement procedure.
American English
- The deflection-yoke assembly was faulty.
- Check the yoke wiring schematic.
Examples
By CEFR Level
- The old television stopped working because the deflection yoke was broken.
- To repair the vintage monitor, the technician carefully adjusted the position of the deflection yoke around the tube's neck.
- The fidelity of the raster scan is critically dependent on the precise alignment and synchronization of the deflection yoke's magnetic fields.
Learning
Memory Aids
Mnemonic
Think of a horse's YOKE that steers it. A DEFLECTION YOKE 'steers' the electron beam left, right, up, and down across the TV screen.
Conceptual Metaphor
A GUIDANCE/STEERING SYSTEM (The yoke directs the beam, much like a pilot's yoke directs an aircraft).
Watch out
Common Pitfalls
Translation Traps (for Russian speakers)
- Прямой перевод "отклоняющаяся ярмо" бессмысленен. Правильный технический термин: "отклоняющая система" или "строчная и кадровая катушки отклонения".
Common Mistakes
- Confusing 'yoke' with 'yolk'.
- Using 'deflection' to mean a general bend rather than a controlled steering of a particle beam.
- Assuming it is a current technology term.
Practice
Quiz
What is the primary function of a deflection yoke?
FAQ
Frequently Asked Questions
No. Deflection yokes are specific to Cathode-Ray Tube (CRT) technology. Modern LCD, LED, and OLED displays have completely different mechanisms for forming an image and do not use electron beams or yokes.
The image on the CRT screen will become severely distorted, collapse into a single line or dot, or disappear entirely, as the electron beam can no longer be properly scanned across the screen.
Rarely. They are usually replaced as a complete unit. Repair involves rewinding very fine coils and is not generally practical compared to sourcing a replacement part from salvaged equipment.
The term is borrowed from the harness worn by oxen. In engineering, a 'yoke' often refers to a clamp-like or embracing structure that links or controls something. Here, it physically clamps around the neck of the CRT tube to apply its magnetic fields.