GB908701A - Improvements in or relating to sawtooth wave generating circuit arrangements - Google Patents
Improvements in or relating to sawtooth wave generating circuit arrangementsInfo
- Publication number
- GB908701A GB908701A GB138559A GB138559A GB908701A GB 908701 A GB908701 A GB 908701A GB 138559 A GB138559 A GB 138559A GB 138559 A GB138559 A GB 138559A GB 908701 A GB908701 A GB 908701A
- Authority
- GB
- United Kingdom
- Prior art keywords
- valve
- voltage
- cathode
- constant
- jan
- 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
- 239000003990 capacitor Substances 0.000 abstract 2
- 230000000903 blocking effect Effects 0.000 abstract 1
- 238000010079 rubber tapping Methods 0.000 abstract 1
- 230000001960 triggered effect Effects 0.000 abstract 1
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
- H04N3/1853—Maintaining DC voltage constant using regulation in parallel
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Television Receiver Circuits (AREA)
Abstract
908,701. Cathode-ray tube circuits. PHILIPSELECTRICAL INDUSTRIES Ltd. Jan. 14, 1959 [Jan. 14, 1958; July 7, 1958], No. 1385/59. Class 40 (7). Television receiver line deflection output valve 4 is stabilized against H.T. voltage V b variation by a circuit 5 and the ensuing constant voltage V c across booster diode 6 capacitor 9 is fed to resistance-capacitance sawtooth generator 10, 15, the latter capacitor being discharged to the H.T. voltage by frame frequency synchronizing pulses applied to normally cut off valve 13; hence the amplitude of sawtooth 16 which controls the frame deflection output valve is constant. The generated E.H.T. voltage V h for the picture tube final anode is likewise constant. To avoid excessive heater-cathode voltage in valve 13 potentiometer circuits may be included, one of which is connected between the H.T. point and earth with is tapping connected to valve 13 cathode. The sawtooth generator may be fed by separate rectification of pulses from line output transformer 7; and valve 13 circuit may be a triggered blocking oscillator.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| NL224037 | 1958-01-14 | ||
| FR769724 | 1958-07-07 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB908701A true GB908701A (en) | 1962-10-24 |
Family
ID=26183489
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB138559A Expired GB908701A (en) | 1958-01-14 | 1959-01-14 | Improvements in or relating to sawtooth wave generating circuit arrangements |
Country Status (2)
| Country | Link |
|---|---|
| CH (1) | CH373426A (en) |
| GB (1) | GB908701A (en) |
-
1959
- 1959-01-12 CH CH6822559A patent/CH373426A/en unknown
- 1959-01-14 GB GB138559A patent/GB908701A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| CH373426A (en) | 1963-11-30 |
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