GB736801A - Improvements in or relating to tuning-indicators - Google Patents
Improvements in or relating to tuning-indicatorsInfo
- Publication number
- GB736801A GB736801A GB19910/52A GB1991052A GB736801A GB 736801 A GB736801 A GB 736801A GB 19910/52 A GB19910/52 A GB 19910/52A GB 1991052 A GB1991052 A GB 1991052A GB 736801 A GB736801 A GB 736801A
- Authority
- GB
- United Kingdom
- Prior art keywords
- aug
- cathode
- screen
- axis
- luminous
- 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
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J31/00—Cathode ray tubes; Electron beam tubes
- H01J31/08—Cathode ray tubes; Electron beam tubes having a screen on or from which an image or pattern is formed, picked up, converted, or stored
- H01J31/10—Image or pattern display tubes, i.e. having electrical input and optical output; Flying-spot tubes for scanning purposes
- H01J31/12—Image or pattern display tubes, i.e. having electrical input and optical output; Flying-spot tubes for scanning purposes with luminescent screen
- H01J31/14—Magic-eye or analogous tuning indicators
Landscapes
- Manufacture Of Electron Tubes, Discharge Lamp Vessels, Lead-In Wires, And The Like (AREA)
- Cathode-Ray Tubes And Fluorescent Screens For Display (AREA)
Abstract
736,801. Cathode-ray tubes. PHILIPS ELECTRICAL INDUSTRIES, Ltd. Aug. 7, 1952 [Aug. 10, 1951; Aug. 10, 1951], No. 19910/52. Class 39 (1). In a tuning indicator of the thermometer type in which the control electrode 4 exerts a varying control along its length, the axis of the cathode 3 is inclined at an acute angle, preferably 60 degrees, to each part of the surface of the luminescent screen 6. The control electrode 4 may be a grid of variable pitch, as shown, or a Wehnelt cylinder having a wedge-shaped slot. The main anode 5 is a slotted plate to form a ribbon beam, and the auxiliary anode 6 is coated with a luminescent strip; 5 and 6 may be integral. The luminous indication is preferably non-linear, e.g. logarithmic, and in a specific example the luminous strip may be one half its maximum length for 10 per cent of the maximum control voltage. The upper part of the screen 6 can be curved at 6<SP>1</SP> to decrease the sensitivity for high amplitude signals, and the screen may also be curved to modify the aspect of the luminous patch. The axis of the cathode 3 is inclined to the tube axis. Tube 8 contains getter material which is vaporized during manufacture.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE736801X | 1951-08-10 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB736801A true GB736801A (en) | 1955-09-14 |
Family
ID=6642408
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB19910/52A Expired GB736801A (en) | 1951-08-10 | 1952-08-07 | Improvements in or relating to tuning-indicators |
Country Status (3)
| Country | Link |
|---|---|
| US (1) | US2736834A (en) |
| FR (2) | FR1061371A (en) |
| GB (1) | GB736801A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2980385B1 (en) | 2011-09-23 | 2014-10-03 | Mbh Dev | ROLLING STRUCTURE FOR ARM TOOLS CONNECTED TO A VACUUM BLOCK INCLUDING A TILTING DEVICE |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB417182A (en) * | 1933-03-29 | 1934-10-01 | Standard Telephones Cables Ltd | Improvements in cathode ray tubes |
| NL46734C (en) * | 1934-07-27 | |||
| BE501567A (en) * | 1940-07-23 | |||
| CH291029A (en) * | 1949-09-09 | 1953-05-31 | Siemens Ag | Electron tubes with fluorescent screens, in particular for tuning display |
-
1952
- 1952-05-16 US US288251A patent/US2736834A/en not_active Expired - Lifetime
- 1952-08-07 GB GB19910/52A patent/GB736801A/en not_active Expired
- 1952-08-08 FR FR1061371D patent/FR1061371A/en not_active Expired
- 1952-08-08 FR FR1061372D patent/FR1061372A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| FR1061372A (en) | 1954-04-12 |
| FR1061371A (en) | 1954-04-12 |
| US2736834A (en) | 1956-02-28 |
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