GB981731A - Improvements in or relating to sawtooth circuit arrangements - Google Patents
Improvements in or relating to sawtooth circuit arrangementsInfo
- Publication number
- GB981731A GB981731A GB26494/62A GB2649462A GB981731A GB 981731 A GB981731 A GB 981731A GB 26494/62 A GB26494/62 A GB 26494/62A GB 2649462 A GB2649462 A GB 2649462A GB 981731 A GB981731 A GB 981731A
- Authority
- GB
- United Kingdom
- Prior art keywords
- resistor
- sawtooth
- voltage
- july
- valve
- 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
- H04N3/00—Scanning details of television systems; Combination thereof with generation of supply voltages
- H04N3/10—Scanning details of television systems; Combination thereof with generation of supply voltages by means not exclusively optical-mechanical
- H04N3/16—Scanning details of television systems; Combination thereof with generation of supply voltages by means not exclusively optical-mechanical by deflecting electron beam in cathode-ray tube, e.g. scanning corrections
- H04N3/18—Generation of supply voltages, in combination with electron beam deflecting
- H04N3/185—Maintaining dc voltage constant
Landscapes
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Details Of Television Scanning (AREA)
- Amplifiers (AREA)
Abstract
981,731. Sawtooth circuits. PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd. July 10, 1962 [July 13, 1961], No. 26494/62. Headings H3P and H3T. In a sawtooth current generator, the flyback pulses are fed via an adjustable impedance to a voltage dependent resistor, the resulting direct voltage being used to control the sawtooth amplitude. As shown, a line output stage for television apparatus comprises a valve or transistor 1 driven by a sawtooth waveform 2 so as to feed a sawtooth current via a transformer 8 to deflection coils 10. An efficiency diode circuit 6, 9 is provided. The positive flyback pulses are fed via a blocking capacitor 15 and a variable resistor 14 to a voltage-dependent resistor 16 which provides a negative amplitude-stabilizing voltage for valve 1 as described in Specification 890,805. Resistor 16 is biased from the boosted H.T. via resistor 18. This resistor may alternatively be connected across capacitor 15. Resistor 14 is adjusted to compensate for tolerances in resistor 16.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEP0027526 | 1961-07-13 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB981731A true GB981731A (en) | 1965-01-27 |
Family
ID=7370871
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB26494/62A Expired GB981731A (en) | 1961-07-13 | 1962-07-10 | Improvements in or relating to sawtooth circuit arrangements |
Country Status (3)
Country | Link |
---|---|
US (1) | US3233143A (en) |
DE (1) | DE1562292B1 (en) |
GB (1) | GB981731A (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3434000A (en) * | 1966-04-25 | 1969-03-18 | Rca Corp | Stabilization of television deflection circuits |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
BE558353A (en) * | 1956-06-15 | |||
NL113455C (en) * | 1958-02-15 | |||
AT208936B (en) * | 1958-02-15 | 1960-05-10 | Philips Nv | Circuit arrangement for generating a sawtooth current in a coil and a direct voltage |
-
1961
- 1961-07-13 DE DE19611562292D patent/DE1562292B1/en active Granted
-
1962
- 1962-06-28 US US206045A patent/US3233143A/en not_active Expired - Lifetime
- 1962-07-10 GB GB26494/62A patent/GB981731A/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
DE1562292C2 (en) | 1974-08-29 |
DE1562292B1 (en) | 1970-05-14 |
US3233143A (en) | 1966-02-01 |
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