GB483650A - Improvements in or relating to electromagnetic deflecting coils for cathode ray tubes - Google Patents
Improvements in or relating to electromagnetic deflecting coils for cathode ray tubesInfo
- Publication number
- GB483650A GB483650A GB2851636A GB2851636A GB483650A GB 483650 A GB483650 A GB 483650A GB 2851636 A GB2851636 A GB 2851636A GB 2851636 A GB2851636 A GB 2851636A GB 483650 A GB483650 A GB 483650A
- Authority
- GB
- United Kingdom
- Prior art keywords
- coils
- tube
- conductors
- ray tubes
- cathode
- 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
- H01J29/762—Deflecting by magnetic fields only using saddle coils or printed windings
Abstract
483,650. Cathode-ray tubes. BLUMLEIN, A. D. Oct. 20, 1936, No. 28516. [Class 39 (i)] An electromagnetic deflecting system for a cathode-ray tube comprises at least two pairs of coils arranged so that two sides of each coil, when the coils are assembled, lie on the surface of the tube and longitudinally with respect to the axis thereof, the conductors causing deflection of the beam in one direction being arranged in opposite quadrants and the conductors causing deflection in the other direction being arranged in the remaining opposite quadrants, the effective conductors, occupying substantially all the available space between two cylindrical surfaces coaxial with the tube. In the case of television apparatus, the coils 1, 1<1> and 2, 2<1> form the line scanning system, and the coils 3, 3<1> and 4, 4<1> the frame scanning system. The end conductors are bent away from the tube. One pair of coils is made longer than the other to permit the sides to lie edge-to-edge on the tube surface. The coils may be assembled and slid on to the tube and a magnetic yoke may be constituted by a winding of iron wire. The magnetic field set up by the coil system corrects " pincushion " distortion and the effect may be augmented by suitable distribution of the turns in the separate coils.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2851636A GB483650A (en) | 1936-10-20 | 1936-10-20 | Improvements in or relating to electromagnetic deflecting coils for cathode ray tubes |
| DEE50311D DE763192C (en) | 1936-10-20 | 1937-10-21 | Deflection coil system for cathode rays |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2851636A GB483650A (en) | 1936-10-20 | 1936-10-20 | Improvements in or relating to electromagnetic deflecting coils for cathode ray tubes |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB483650A true GB483650A (en) | 1938-04-20 |
Family
ID=10276869
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB2851636A Expired GB483650A (en) | 1936-10-20 | 1936-10-20 | Improvements in or relating to electromagnetic deflecting coils for cathode ray tubes |
Country Status (2)
| Country | Link |
|---|---|
| DE (1) | DE763192C (en) |
| GB (1) | GB483650A (en) |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR747139A (en) * | 1931-11-10 | 1933-06-12 | Devices for deflecting electronic currents in cathode ray tubes | |
| AT144289B (en) * | 1933-12-07 | 1936-01-10 | Telefunken Gmbh | Equipment for the coordinate deflection of cathode rays. |
| BE406679A (en) * | 1933-12-07 | |||
| GB449533A (en) * | 1934-10-24 | 1936-06-24 | Michael Bowman Manifold | Improvements in and relating to coils for producing a magnetic field of approximately uniform flux density, for use, for example, with cathode ray tubes |
-
1936
- 1936-10-20 GB GB2851636A patent/GB483650A/en not_active Expired
-
1937
- 1937-10-21 DE DEE50311D patent/DE763192C/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| DE763192C (en) | 1952-03-06 |
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