GB464064A - Back-coupled circuit for cathode-ray tube, more especially for television purposes - Google Patents
Back-coupled circuit for cathode-ray tube, more especially for television purposesInfo
- Publication number
- GB464064A GB464064A GB17356/36A GB1735636A GB464064A GB 464064 A GB464064 A GB 464064A GB 17356/36 A GB17356/36 A GB 17356/36A GB 1735636 A GB1735636 A GB 1735636A GB 464064 A GB464064 A GB 464064A
- Authority
- GB
- United Kingdom
- Prior art keywords
- cathode
- control
- resistance
- anode
- circuit
- 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
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N5/00—Details of television systems
- H04N5/66—Transforming electric information into light information
- H04N5/68—Circuit details for cathode-ray display tubes
Abstract
464,064. Television. MICHAELIS, E. June 22, 1936, No. 17356. Convention date, June 22, 1935. [Classes 40 (iii) and 40 (v)] Reaction is applied from the anode circuit of a cathode ray tube to its control grid. The signals applied at F, Fig. 1, to the control grid D of a cathode ray tube produce corresponding potential differences across a resistance in the anode - cathode circuit. These potential differences are applied to a valve K whose output is coupled over resistance H to the grid D. The grid circuit may be transformer coupled to the anode-cathode circuit, Fig. 2 (not shown). In Fig. 3, the potentials developed across the high resistance J, in dependence on the control potentials, modify the potential difference between the anode and cathode to reinforce the effect of the control potentials. The resistance J may be replaced by a choke or may be bridged by a condenser. In Fig. 4, the current from the fluorescent screen T flows in resistance J, from which tappings are taken to the control electrode D and the cathode E, so as to vary the potential difference between electrode D and cathode E in accordance with the control signals. Specification 403,876, is referred to.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE464064X | 1935-06-22 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB464064A true GB464064A (en) | 1937-04-12 |
Family
ID=6540205
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB17356/36A Expired GB464064A (en) | 1935-06-22 | 1936-06-22 | Back-coupled circuit for cathode-ray tube, more especially for television purposes |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB464064A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE898456C (en) * | 1937-12-18 | 1953-11-30 | Fernseh Gmbh | Arrangement for automatic image brightness control in circuits with cathode ray tubes for image reproduction, especially television transmission equipment |
-
1936
- 1936-06-22 GB GB17356/36A patent/GB464064A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE898456C (en) * | 1937-12-18 | 1953-11-30 | Fernseh Gmbh | Arrangement for automatic image brightness control in circuits with cathode ray tubes for image reproduction, especially television transmission equipment |
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