GB1259638A - - Google Patents
Info
- Publication number
- GB1259638A GB1259638A GB1259638DA GB1259638A GB 1259638 A GB1259638 A GB 1259638A GB 1259638D A GB1259638D A GB 1259638DA GB 1259638 A GB1259638 A GB 1259638A
- Authority
- GB
- United Kingdom
- Prior art keywords
- valve
- transistor
- april
- supply voltage
- output
- 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
- H04N5/12—Devices in which the synchronising signals are only operative if a phase difference occurs between synchronising and synchronised scanning devices, e.g. flywheel synchronising
- H04N5/126—Devices in which the synchronising signals are only operative if a phase difference occurs between synchronising and synchronised scanning devices, e.g. flywheel synchronising whereby the synchronisation signal indirectly commands a frequency generator
Landscapes
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Inductance-Capacitance Distribution Constants And Capacitance-Resistance Oscillators (AREA)
- Amplifiers (AREA)
Abstract
1,259,638. Transistor oscillator circuits. INTERNATIONAL STANDARD ELECTRIC CORP. 16 April, 1969 [24 April, 1968], No. 19345/69. Heading H3T. An oscillator, having two amplifiers such as a valve 3 and a transistor 10 in series with a load, has an R-C phase-shift feedback 6, 7, 8, 9 from its output to its input at T10 base, to which base a portion of the supply voltage is also applied through a potentiometer 13, 14 in order to maintain the frequency independent of supply voltage variations. The output, from valve 3 anode is fed via a shaping network R2, C5 and capacitor 11 to the phase shift network. The latter may include variable capacitors or varactor diodes. A synchronizing signal may be supplied at 17, and the valve 3 may be replaced by a transistor or thyristor. The regenerative feedback is effective only at the operating frequency.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19681762165 DE1762165B2 (en) | 1968-04-24 | 1968-04-24 | RC oscillator for generating synchronized control oscillations for the deflection stage in television sets |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1259638A true GB1259638A (en) | 1972-01-05 |
Family
ID=5696893
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1259638D Expired GB1259638A (en) | 1968-04-24 | 1969-04-16 |
Country Status (4)
| Country | Link |
|---|---|
| BE (1) | BE731981A (en) |
| DE (1) | DE1762165B2 (en) |
| FR (1) | FR2007502A1 (en) |
| GB (1) | GB1259638A (en) |
-
1968
- 1968-04-24 DE DE19681762165 patent/DE1762165B2/en active Granted
-
1969
- 1969-04-16 GB GB1259638D patent/GB1259638A/en not_active Expired
- 1969-04-22 FR FR6912559A patent/FR2007502A1/fr not_active Withdrawn
- 1969-04-24 BE BE731981D patent/BE731981A/xx unknown
Also Published As
| Publication number | Publication date |
|---|---|
| DE1762165B2 (en) | 1974-08-08 |
| BE731981A (en) | 1969-10-24 |
| DE1762165C3 (en) | 1975-04-03 |
| DE1762165A1 (en) | 1970-08-06 |
| FR2007502A1 (en) | 1970-01-09 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed | ||
| PLNP | Patent lapsed through nonpayment of renewal fees |