GB582836A - Cathode-ray oscillograph circuits - Google Patents
Cathode-ray oscillograph circuitsInfo
- Publication number
- GB582836A GB582836A GB17689/44A GB1768944A GB582836A GB 582836 A GB582836 A GB 582836A GB 17689/44 A GB17689/44 A GB 17689/44A GB 1768944 A GB1768944 A GB 1768944A GB 582836 A GB582836 A GB 582836A
- Authority
- GB
- United Kingdom
- Prior art keywords
- condenser
- diode
- potential
- cathode
- grid
- 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
- H04N3/24—Blanking circuits
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R13/00—Arrangements for displaying electric variables or waveforms
- G01R13/20—Cathode-ray oscilloscopes
- G01R13/22—Circuits therefor
Abstract
582,836. Pulse generating circuits. STANDARD TELEPHONES & CABLES, Ltd. Sept. 15, 1944, No. 17689. Convention date, Sept 23, 1943. [Class 40 (v)] In a time base circuit in which a condenser is discharged by a gas-filled triode in response to a pulse to produce a saw-tooth, a diode is arranged to conduct when the condenser is charged to a certain level, the potential produced by the diode current flowing through a resistance, feeding a D.C. amplifier, the output of which is applied to the control grid of a cathode-ray tube. A positive pulse applied to the grid of gas-filled valve 1, causes it to fire and discharge condenser 10, the condenser recharging, at a rate determined by the variable resistance 9, until the diode 12 conducts. The diode is maintained conducting, except for the duration of the saw-tooth wave, while condenser 10 is charging, the potential across resistance 14, carrying the diode current, being applied to the amplifier 21, the anode of which is connected over the potential divider 25, 26 and associated compensating condensers 27, 28 to the grid of the cathode-ray tube 0. During the charging of condenser 10, when diode 12 is non-conducting, the potential of the grid of amplifier 21 falls, the rise in anode potential causing the brightening-up of the trace on the cathode-ray tube. The amplitude of the sawtooth may be adjusted by varying resistances 6, 7, 16, 17.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US254293XA | 1943-09-23 | 1943-09-23 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB582836A true GB582836A (en) | 1946-11-28 |
Family
ID=21826006
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB17689/44A Expired GB582836A (en) | 1943-09-23 | 1944-09-15 | Cathode-ray oscillograph circuits |
Country Status (4)
| Country | Link |
|---|---|
| BE (1) | BE466429A (en) |
| CH (1) | CH254293A (en) |
| FR (1) | FR938197A (en) |
| GB (1) | GB582836A (en) |
-
0
- BE BE466429D patent/BE466429A/xx unknown
-
1944
- 1944-09-15 GB GB17689/44A patent/GB582836A/en not_active Expired
-
1946
- 1946-03-29 FR FR938197D patent/FR938197A/en not_active Expired
- 1946-04-12 CH CH254293D patent/CH254293A/en unknown
Also Published As
| Publication number | Publication date |
|---|---|
| BE466429A (en) | |
| FR938197A (en) | 1948-09-07 |
| CH254293A (en) | 1948-04-30 |
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