GB426706A - Improvements in or relating to cathode ray tubes for use for television and like purposes - Google Patents
Improvements in or relating to cathode ray tubes for use for television and like purposesInfo
- Publication number
- GB426706A GB426706A GB1899833A GB1899833A GB426706A GB 426706 A GB426706 A GB 426706A GB 1899833 A GB1899833 A GB 1899833A GB 1899833 A GB1899833 A GB 1899833A GB 426706 A GB426706 A GB 426706A
- Authority
- GB
- United Kingdom
- Prior art keywords
- anode
- electrodes
- cut
- 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
- H01J29/52—Arrangements for controlling intensity of ray or beam, e.g. for modulation
Landscapes
- Particle Accelerators (AREA)
Abstract
426,706. Cathode-ray tubes. TELEFUNKEN GES. FUR DRAHTLOSE TELEGRAPHIE, 12, Hallesches Ufer, Berlin. July 4, 1933, No. 18998. Void [Abridged as open to inspection under Sect. 91 of the Acts, Jan. 5, 1934]. [Class 39 (i)] A cathode-ray tube has means for accelerating the beam in stages and means for modulating its intensity by the cut-off method, wherein the beam is varied relatively to an apertured electrode so that more or less of the beam is cut off. The tube shown has an anode 1 at a low potential, electrodes 2, 3, modulating the cut-off at an apertured electrode 4, directioncorrecting electrodes 5, 6, and an anode 9 at a high potential. The arrangement should be such that the field due to the anode 9 does not affect the beam while it passes at low speed through the electrodes 2-6; for this purpose an anode 1a at a low potential, and having a smaller aperture than that in the anode 9, may be placed in front of the anode 9. An annular coil 10, producing a magnetic field, may be provided for correcting manufacturing errors, and a magnetic screen may be interposed between the coil 10 and the scanning coils 7, 8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1899833A GB426706A (en) | 1933-07-04 | 1933-07-04 | Improvements in or relating to cathode ray tubes for use for television and like purposes |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1899833A GB426706A (en) | 1933-07-04 | 1933-07-04 | Improvements in or relating to cathode ray tubes for use for television and like purposes |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB426706A true GB426706A (en) | 1935-04-08 |
Family
ID=10122021
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1899833A Expired GB426706A (en) | 1933-07-04 | 1933-07-04 | Improvements in or relating to cathode ray tubes for use for television and like purposes |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB426706A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2459319A (en) * | 1944-10-11 | 1949-01-18 | Rca Corp | Cathode-ray oscilloscope |
-
1933
- 1933-07-04 GB GB1899833A patent/GB426706A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2459319A (en) * | 1944-10-11 | 1949-01-18 | Rca Corp | Cathode-ray oscilloscope |
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