GB426537A - Improvements in or relating to electric oscillators - Google Patents
Improvements in or relating to electric oscillatorsInfo
- Publication number
- GB426537A GB426537A GB23383/34A GB2338334A GB426537A GB 426537 A GB426537 A GB 426537A GB 23383/34 A GB23383/34 A GB 23383/34A GB 2338334 A GB2338334 A GB 2338334A GB 426537 A GB426537 A GB 426537A
- Authority
- GB
- United Kingdom
- Prior art keywords
- valve
- cathode
- ray tube
- condensers
- aug
- 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
- 238000007599 discharging Methods 0.000 abstract 1
Classifications
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K4/00—Generating pulses having essentially a finite slope or stepped portions
- H03K4/06—Generating pulses having essentially a finite slope or stepped portions having triangular shape
- H03K4/08—Generating pulses having essentially a finite slope or stepped portions having triangular shape having sawtooth shape
- H03K4/10—Generating pulses having essentially a finite slope or stepped portions having triangular shape having sawtooth shape using as active elements vacuum tubes only
- H03K4/12—Generating pulses having essentially a finite slope or stepped portions having triangular shape having sawtooth shape using as active elements vacuum tubes only in which a sawtooth voltage is produced across a capacitor
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Video Image Reproduction Devices For Color Tv Systems (AREA)
Abstract
426,537. Valve generating circuits. FERNSEH AKT.-GES., Goerzallee, Zehlendorf, Berlin. Aug. 13, 1934, No. 23383. Convention date, Aug. 12, 1933. [Classes 40 (iii) and 40 (v)] The voltages required to deflect the beam of a cathode-ray tube used for television and like purposes are provided by two oppositelyconnected relaxation oscillators, the voltages of the deflecting plates being thus varied in opposite phase. One oscillator comprises a condenser 4a charged by a battery through a diode valve 5a and discharging through a triode valve 3 when the grid of that valve receives a synchronizing impulse through a transformer 1 and amplifier 2. The second oscillator comprises condenser 4b charged through a diode 5b and discharged through the same valve 3. The condensers 4a, 4b are connected in series, the intermediate point being held at a fixed potential by earthing or connection to the anode of the cathode-ray tube 8. The outer plates of the condensers are connected through variable biassing batteries 9a, 9b to the deflecting electrodes 6, 7 of the cathode-ray tube 8. The anode of the cathoderay tube may be arranged to vary in voltage in agreement with one of the electrodes 7, 8.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE426537X | 1933-08-12 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB426537A true GB426537A (en) | 1935-04-04 |
Family
ID=6477197
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB23383/34A Expired GB426537A (en) | 1933-08-12 | 1934-08-13 | Improvements in or relating to electric oscillators |
Country Status (2)
| Country | Link |
|---|---|
| FR (1) | FR777160A (en) |
| GB (1) | GB426537A (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB468394A (en) * | 1936-01-14 | 1937-07-05 | Gen Electric Co Ltd | Improvements in time bases for cathode ray tubes |
| DE747343C (en) * | 1937-06-18 | 1944-09-20 | Telefunken Gmbh | Circuit arrangement for saw tooth generators |
-
1934
- 1934-08-13 FR FR777160D patent/FR777160A/en not_active Expired
- 1934-08-13 GB GB23383/34A patent/GB426537A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| FR777160A (en) | 1935-02-13 |
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