page_title: Deflection yoke
hierarchical_section_title: Deflection yoke
caption_attribution_description: English: An w:LP Displays made 14 inch cathode ray tubes showing its deflection coils and electron guns
context_page_description: A deflection yoke is a kind of magnetic lens, used in cathode ray tubes to scan the electron beam both vertically and horizontally over the whole screen.
  In a CRT television, the electron beam is moved in a raster scan on the screen. By adjusting the strength of the beam current, the brightness of the light produced by the phosphor on the screen can be varied. The cathode ray tube allowed the development of all-electronic television.
  Electromagnetic deflection yokes are also used in certain radar displays.
context_section_description: A deflection yoke is a kind of magnetic lens, used in cathode ray tubes to scan the electron beam both vertically and horizontally over the whole screen.
  In a CRT television, the electron beam is moved in a raster scan on the screen. By adjusting the strength of the beam current, the brightness of the light produced by the phosphor on the screen can be varied.  The cathode ray tube allowed the development of all-electronic television. 
  Electromagnetic deflection yokes are also used in certain radar displays.
caption: Cathode ray tube, showing the yoke (copper coils and white plastic former) around the rear neck of the tube
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