GB472992A - Filter amplifier for television synchronisation purposes - Google Patents
Filter amplifier for television synchronisation purposesInfo
- Publication number
- GB472992A GB472992A GB9877/36A GB987736A GB472992A GB 472992 A GB472992 A GB 472992A GB 9877/36 A GB9877/36 A GB 9877/36A GB 987736 A GB987736 A GB 987736A GB 472992 A GB472992 A GB 472992A
- Authority
- GB
- United Kingdom
- Prior art keywords
- television
- april
- filter amplifier
- anode
- tuned circuits
- 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
- 230000010355 oscillation Effects 0.000 abstract 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 abstract 1
- 238000006243 chemical reaction Methods 0.000 abstract 1
- 230000008878 coupling Effects 0.000 abstract 1
- 238000010168 coupling process Methods 0.000 abstract 1
- 238000005859 coupling reaction Methods 0.000 abstract 1
Classifications
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Transforming Electric Information Into Light Information (AREA)
- Liquid Crystal (AREA)
- Video Image Reproduction Devices For Color Tv Systems (AREA)
- Photographic Processing Devices Using Wet Methods (AREA)
Abstract
472,992. Television. RADIOAKT.- GES. D. S. LOEWE. April 3, 1936, No. 9877. Convention date, April 6, 1935. [Class 40 (iii)] In order to impose on the synchronizing impulses derived from a light siren or equivalent generator 6, 7, 8 a more uniform spacing and amplitude, the impulses are applied to a filter amplifier V1 ... V4 comprising a series of highly selective tuned circuits with reaction coupling, while the final valve V4 functions as an amplitude limiter, in one direction of swing by permitting a flow of grid current via resistance 4, and in the other direction by so reducing the anode potential that the anode oscillations exceed the anode potential. The control potential so corrected is utilized to excite an impulse apparatus, e.g. a relaxation oscillation generator adapted to generate a synchronization impulse of predetermined form. Preferably the coils employed in the tuned circuits are provided with iron-powder cores.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE431521X | 1933-01-10 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB472992A true GB472992A (en) | 1937-10-04 |
Family
ID=6487472
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB870/34A Expired GB431521A (en) | 1933-01-10 | 1934-01-10 | Improvements in the production of synchronising impulses in television and the like |
| GB9877/36A Expired GB472992A (en) | 1933-01-10 | 1936-04-03 | Filter amplifier for television synchronisation purposes |
Family Applications Before (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB870/34A Expired GB431521A (en) | 1933-01-10 | 1934-01-10 | Improvements in the production of synchronising impulses in television and the like |
Country Status (3)
| Country | Link |
|---|---|
| US (1) | US2152824A (en) |
| FR (2) | FR766733A (en) |
| GB (2) | GB431521A (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE763069C (en) * | 1935-02-28 | 1953-02-09 | Rca Corp | Circuit arrangement for phase shifting pulses |
| US2482803A (en) * | 1946-09-13 | 1949-09-27 | Jr Carl Harrison Smith | Electronic signal shaping circuit |
| US2539042A (en) * | 1948-10-21 | 1951-01-23 | Edward R Toporeck | Automatic gain control circuit |
-
1934
- 1934-01-09 FR FR766733D patent/FR766733A/en not_active Expired
- 1934-01-10 GB GB870/34A patent/GB431521A/en not_active Expired
-
1936
- 1936-04-02 US US72315A patent/US2152824A/en not_active Expired - Lifetime
- 1936-04-03 GB GB9877/36A patent/GB472992A/en not_active Expired
- 1936-04-06 FR FR47252D patent/FR47252E/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| GB431521A (en) | 1935-07-10 |
| US2152824A (en) | 1939-04-04 |
| FR47252E (en) | 1937-03-05 |
| FR766733A (en) | 1934-07-02 |
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