GB346834A - Improvements in or relating to thermionic valve systems and apparatus - Google Patents
Improvements in or relating to thermionic valve systems and apparatusInfo
- Publication number
- GB346834A GB346834A GB182030A GB182030A GB346834A GB 346834 A GB346834 A GB 346834A GB 182030 A GB182030 A GB 182030A GB 182030 A GB182030 A GB 182030A GB 346834 A GB346834 A GB 346834A
- Authority
- GB
- United Kingdom
- Prior art keywords
- valve
- impulses
- motor
- television
- coupling
- 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
- H04N5/04—Synchronising
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N5/00—Details of television systems
- H04N5/04—Synchronising
- H04N5/06—Generation of synchronising signals
- H04N5/067—Arrangements or circuits at the transmitter end
Landscapes
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Ultra Sonic Daignosis Equipment (AREA)
- Dental Tools And Instruments Or Auxiliary Dental Instruments (AREA)
- Motor Or Generator Frames (AREA)
- Permanent Magnet Type Synchronous Machine (AREA)
- Water Treatment By Electricity Or Magnetism (AREA)
- Fluid-Pressure Circuits (AREA)
Abstract
346,834. Television. RICHARDS, C. L., BAIRD, J. L., and TELEVISION, Ltd., 133, Long Acre, London. Jan.18,1930, No. 1820. Addition to 336,655, [Class 40 (iii), Telegraphs, Electric]. [Classes 40 (iii) and 40 (v).] In a television receiver, in which a phonic motor 19 is energized by a component of the signalling-current corresponding to the strip frequency, as described in the parent Specification, one thermionic valve 14 supplies impulses to the motor, and another 13 supplies impulses to a source of light 16, and a coupling between the valves alters the phase of the impulses applied to one valve relatively to the impulses applied to the other valve. The coupling consists of a transformer 15 between the anode of the valve 13 and the grid of the valve 14 or of a resistance-capacity coupling (Fig. 2, not shown). Alternatively the signals are applied to the two grids through a transformer having a divided or double secondary winding (Fig. 3, not shown). The grid bias of the valve 14 is of such magnitude that the impulse can only operate the motor when they reach a certain maximum value.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB15833A GB412941A (en) | 1933-01-03 | 1933-01-03 | Improvements in or relating to television and like apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB346834A true GB346834A (en) | 1931-04-20 |
Family
ID=9699413
Family Applications (3)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB2200429A Expired GB336655A (en) | 1933-01-03 | 1929-07-17 | Improvements in or relating to synchronising means for television apparatus or the like |
| GB182030A Expired GB346834A (en) | 1933-01-03 | 1930-01-18 | Improvements in or relating to thermionic valve systems and apparatus |
| GB15833A Expired GB412941A (en) | 1933-01-03 | 1933-01-03 | Improvements in or relating to television and like apparatus |
Family Applications Before (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB2200429A Expired GB336655A (en) | 1933-01-03 | 1929-07-17 | Improvements in or relating to synchronising means for television apparatus or the like |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB15833A Expired GB412941A (en) | 1933-01-03 | 1933-01-03 | Improvements in or relating to television and like apparatus |
Country Status (3)
| Country | Link |
|---|---|
| BE (1) | BE371845A (en) |
| FR (2) | FR699602A (en) |
| GB (3) | GB336655A (en) |
-
1929
- 1929-07-17 GB GB2200429A patent/GB336655A/en not_active Expired
-
1930
- 1930-01-18 GB GB182030A patent/GB346834A/en not_active Expired
- 1930-07-11 FR FR699602D patent/FR699602A/en not_active Expired
- 1930-07-20 BE BE371845D patent/BE371845A/xx unknown
-
1931
- 1931-01-15 FR FR709401D patent/FR709401A/en not_active Expired
-
1933
- 1933-01-03 GB GB15833A patent/GB412941A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| GB412941A (en) | 1934-07-03 |
| FR699602A (en) | 1931-02-18 |
| BE371845A (en) | 1930-08-30 |
| GB336655A (en) | 1930-10-17 |
| FR709401A (en) | 1931-08-05 |
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