GB520723A - Improvements relating to cathode ray tubes - Google Patents
Improvements relating to cathode ray tubesInfo
- Publication number
- GB520723A GB520723A GB266140A GB266140A GB520723A GB 520723 A GB520723 A GB 520723A GB 266140 A GB266140 A GB 266140A GB 266140 A GB266140 A GB 266140A GB 520723 A GB520723 A GB 520723A
- Authority
- GB
- United Kingdom
- Prior art keywords
- coils
- laminae
- line
- cathode
- axes
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J29/00—Details of cathode-ray tubes or of electron-beam tubes of the types covered by group H01J31/00
- H01J29/46—Arrangements of electrodes and associated parts for generating or controlling the ray or beam, e.g. electron-optical arrangement
- H01J29/70—Arrangements for deflecting ray or beam
- H01J29/72—Arrangements for deflecting ray or beam along one straight line or along two perpendicular straight lines
- H01J29/76—Deflecting by magnetic fields only
- H01J29/766—Deflecting by magnetic fields only using a combination of saddle coils and toroidal windings
Landscapes
- Manufacture Of Electron Tubes, Discharge Lamp Vessels, Lead-In Wires, And The Like (AREA)
Abstract
520,723. Cathode-ray tubes. COSSOR, Ltd., A. C., BEDFORD, L. H., JOFEH, L., and STEVENS, W. H. May 10, 1938, No. 2661/40. Divided out of 519,668. [Class 39 (i)] In an electro-magnetic deflecting system for a cathode-ray tube used for television or as a beam valve the coils 7 for line deflections surround a former 6 on the tube neck the side limbs of the magnetic circuits being completed by a rectangle 9a and two U- shaped laminae 9b, 9c; the axes of the coils 7 are on the main limb of the magnetic circuit which passes through the tube. The centres of the coils 8 for frame deflection are also on this line but their axes are at right angles thereto ; the external magnetic circuit is continued through laminae 11, wooden spacing blocks 10 separating all the laminae. The laminae 9b,c are of metal known by the Registered Trade Mark " Rhometal" and the others of metal known by the Registered Trade Mark "Stalloy," the former having higher permeability at line frequency than the latter. The coils 8 mav be enclosed in electrostatic screens and' the coils 7 operated symmetrically with respect to earth. The coils 8 may be adjustable to arrange for neutralization of possible pick-up between the coils.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB266140A GB520723A (en) | 1938-05-10 | 1938-05-10 | Improvements relating to cathode ray tubes |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB266140A GB520723A (en) | 1938-05-10 | 1938-05-10 | Improvements relating to cathode ray tubes |
Publications (1)
Publication Number | Publication Date |
---|---|
GB520723A true GB520723A (en) | 1940-05-01 |
Family
ID=9743529
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB266140A Expired GB520723A (en) | 1938-05-10 | 1938-05-10 | Improvements relating to cathode ray tubes |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB520723A (en) |
-
1938
- 1938-05-10 GB GB266140A patent/GB520723A/en not_active Expired
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