GB639233A - Improvements relating to cathode ray tube display apparatus - Google Patents
Improvements relating to cathode ray tube display apparatusInfo
- Publication number
- GB639233A GB639233A GB2961747A GB2961747A GB639233A GB 639233 A GB639233 A GB 639233A GB 2961747 A GB2961747 A GB 2961747A GB 2961747 A GB2961747 A GB 2961747A GB 639233 A GB639233 A GB 639233A
- Authority
- GB
- United Kingdom
- Prior art keywords
- time base
- voltage
- fast time
- tube
- ray tube
- 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
- 230000003321 amplification Effects 0.000 abstract 1
- 230000001419 dependent effect Effects 0.000 abstract 1
- 238000003199 nucleic acid amplification method Methods 0.000 abstract 1
Classifications
-
- 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
- G01R13/28—Circuits for simultaneous or sequential presentation of more than one variable
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Analysing Materials By The Use Of Radiation (AREA)
Abstract
639,233. Cathode - ray oscillographs. HIGHAM, E. H., and METROPOLITANVICKERS ELECTRICAL CO., Ltd. Nov. 6, 1947, No. 29617. [Class 37] [Also in Group XXXVIII and XL (c)] Apparatus for simultaneously displaying several (as shown four) variables on a cathoderay oscillograph CRT comprises means for applying a fast time base to the Y-plates and a slow time base to the X-plates of the tube, the beam of the tube being modulated by an impulse derived from the voltage to be indicated and the fast time base so that the spot is only visible four times in each vertical trace (due to the fast time base), the succession of spots producing four substantially horizontal lines which deviate from the horizontal by an amount dependent on the voltages being measured. For each variable, the voltage and the fast time base are applied to the grids of valves V1, V3 of a comparator circuit, Fig. 3, whereby V1 is overbiassed until the value of the falling voltage, of the fast time base is reduced to meet the grid voltage of V1 and allow it to conduct, when a voltage is sent to V5, differentiated after amplification and fed to the grid of the cathode-ray tube.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2961747A GB639233A (en) | 1947-11-06 | 1947-11-06 | Improvements relating to cathode ray tube display apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2961747A GB639233A (en) | 1947-11-06 | 1947-11-06 | Improvements relating to cathode ray tube display apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB639233A true GB639233A (en) | 1950-06-21 |
Family
ID=10294400
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB2961747A Expired GB639233A (en) | 1947-11-06 | 1947-11-06 | Improvements relating to cathode ray tube display apparatus |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB639233A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3585988A (en) * | 1968-11-20 | 1971-06-22 | Minnesota Mining & Mfg | Arrhythmia recording and control system and method of operation |
| US3766908A (en) * | 1972-01-07 | 1973-10-23 | Becton Dickinson Co | Electronic medical diagnostic device |
| US4596255A (en) * | 1982-11-08 | 1986-06-24 | Snell Jeffery D | Apparatus for interpreting and displaying cardiac events of a heart connected to a cardiac pacing means |
-
1947
- 1947-11-06 GB GB2961747A patent/GB639233A/en not_active Expired
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3585988A (en) * | 1968-11-20 | 1971-06-22 | Minnesota Mining & Mfg | Arrhythmia recording and control system and method of operation |
| US3766908A (en) * | 1972-01-07 | 1973-10-23 | Becton Dickinson Co | Electronic medical diagnostic device |
| US4596255A (en) * | 1982-11-08 | 1986-06-24 | Snell Jeffery D | Apparatus for interpreting and displaying cardiac events of a heart connected to a cardiac pacing means |
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