GB683461A - Improvements in or relating to cathode-ray tubes - Google Patents
Improvements in or relating to cathode-ray tubesInfo
- Publication number
- GB683461A GB683461A GB31046/47A GB3104647A GB683461A GB 683461 A GB683461 A GB 683461A GB 31046/47 A GB31046/47 A GB 31046/47A GB 3104647 A GB3104647 A GB 3104647A GB 683461 A GB683461 A GB 683461A
- Authority
- GB
- United Kingdom
- Prior art keywords
- segments
- collecting electrode
- resistances
- segment
- point
- 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
- H01J31/02—Cathode ray tubes; Electron beam tubes having one or more output electrodes which may be impacted selectively by the ray or beam, and onto, from, or over which the ray or beam may be deflected or de-focused
- H01J31/06—Cathode ray tubes; Electron beam tubes having one or more output electrodes which may be impacted selectively by the ray or beam, and onto, from, or over which the ray or beam may be deflected or de-focused with more than two output electrodes, e.g. for multiple switching or counting
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J29/00—Details of cathode-ray tubes or of electron-beam tubes of the types covered by group H01J31/00
- H01J29/46—Arrangements of electrodes and associated parts for generating or controlling the ray or beam, e.g. electron-optical arrangement
- H01J29/70—Arrangements for deflecting ray or beam
- H01J29/78—Arrangements for deflecting ray or beam along a circle, spiral or rotating radial line, e.g. for radar display
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J31/00—Cathode ray tubes; Electron beam tubes
- H01J31/02—Cathode ray tubes; Electron beam tubes having one or more output electrodes which may be impacted selectively by the ray or beam, and onto, from, or over which the ray or beam may be deflected or de-focused
Landscapes
- Engineering & Computer Science (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Measurement Of Radiation (AREA)
- Welding Or Cutting Using Electron Beams (AREA)
Abstract
683,461. Automatic exchange systems. NAAMLOOZE VENNOOTSCHAP PHILIPS GLOEILAMPENFABRIEKEN. Nov. 24, 1947 [Nov. 27, 1946], No. 31048/47. Class 40 (iv). [Also in Group XL (a)] Cathode-ray tube apparatus for use in automatic telephony is of the kind in which an electron beam is moved continuously by deflecting means so that its point of impact on a target traces out a two-dimensional closed path and has the target formed as a collecting electrode which is continuous throughout the path or is divided into segments separatedby intervals which are narrower than the electron beam and coupled to the deflecting means through three or more avenues in such a way that when-the beam impinges on the collecting electrode the deflecting means are automatically caused to deflect the beam so that its point of impact on the collecting eleetrode moves continuously along the closed path. In the construction shown in Fig. 3 the collecting electrode is composed of separate segments 22 arranged in an annulus, the spacing between adjacent segments being narrower than the cathode-ray beam. Each segment 22 is connected to the junction point of two resistances 23, the resistances 23 being equal in number to the segments 22. and being connected in a ring, three or more points 26, 26a of which are connected to a source of positive potential through resistances 24 and to the deflecting plates 25, 25a, each deflecting plate being displaced more than 90 degrees from the corresponding point 26, 26a. The collecting electrode can be provided with further segments 29, 30 connected to the segment 22b and positioned partly behind the segments 22 and formed with recesses 29a at each interval between the segments 22 so that part of the beam can pass -through the gap between the segments. The segments 29, 30 tend to urge the beam inwardly and outwardly respectively. The segments 22 need not be spaced as shown but may be positioned one behind the other. The beam may follow any closed curved path. In the construction shown in Fig. 4 the beam is caused to follow one closed path 32, 33, 34, 35, &c. or another closed path 32, 33, 36, 37, &c. according to the strength of the beam current through the segment 33. Arrest of the beam can be effected in the arrangement shown in Fig. 3 by disconnecting a predetermined segment 22 from the ring of resistances 23 and connecting it to the diametrically opposite point in the ring. The direction of travel of the beam can be reversed if the segments of the collecting electrode have secondary emission properties and a grid carrying a suitable voltage for suppressing secondary emission is mounted in front of one' of them. Such an arrangement can be used in a a call.-finder for automatic telephone systems. In the construction shown in Fig. 7, the direction of travel of the beam is reversed at 46 with a suitable current strength and the beam comes to rest on the edges of the electrodes 50 and 46.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
NL129032A NL72659C (en) | 1946-11-27 | 1946-11-27 | Device equipped with an electron beam tube |
Publications (1)
Publication Number | Publication Date |
---|---|
GB683461A true GB683461A (en) | 1952-11-26 |
Family
ID=19782097
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB31046/47A Expired GB683461A (en) | 1946-11-27 | 1947-11-24 | Improvements in or relating to cathode-ray tubes |
Country Status (7)
Country | Link |
---|---|
US (1) | US2488452A (en) |
BE (1) | BE477678A (en) |
CH (1) | CH275026A (en) |
DE (1) | DE916331C (en) |
FR (1) | FR955981A (en) |
GB (1) | GB683461A (en) |
NL (1) | NL72659C (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1266989B (en) * | 1963-10-30 | 1968-04-25 | Zeiss Carl Fa | Device for interpolation |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2719248A (en) * | 1947-07-11 | 1955-09-27 | Josephson Bengt Adolf Sanmel | Electron discharge device |
NL75452C (en) * | 1948-07-07 | |||
US2781171A (en) * | 1948-09-17 | 1957-02-12 | Northrop Aircraft Inc | Electronic counting tube |
US2666162A (en) * | 1949-10-21 | 1954-01-12 | Commw Scient Ind Res Org | Electronic counting device |
US2808535A (en) * | 1954-10-18 | 1957-10-01 | Burroughs Corp | Resettable variable radix counter |
US10665437B2 (en) * | 2015-02-10 | 2020-05-26 | Hamilton Sundstrand Corporation | System and method for enhanced ion pump lifespan |
US10262845B2 (en) | 2015-02-10 | 2019-04-16 | Hamilton Sundstrand Corporation | System and method for enhanced ion pump lifespan |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
BE404639A (en) * | 1933-08-09 | |||
DE708516C (en) * | 1938-07-24 | 1941-07-23 | Fernseh Gmbh | Method for frequency division by means of a cathode ray tube |
US2290651A (en) * | 1939-09-26 | 1942-07-21 | William H Peck | Television system |
US2374666A (en) * | 1941-03-11 | 1945-05-01 | Tung Sol Lamp Works Inc | Electronic device, circuit, and method |
US2390250A (en) * | 1942-11-03 | 1945-12-04 | Rca Corp | Cathode ray tube and circuit |
BE464957A (en) * | 1945-05-02 |
-
0
- BE BE477678D patent/BE477678A/xx unknown
- FR FR955981D patent/FR955981A/fr not_active Expired
-
1946
- 1946-11-27 NL NL129032A patent/NL72659C/en active
-
1947
- 1947-11-24 GB GB31046/47A patent/GB683461A/en not_active Expired
- 1947-11-25 US US787912A patent/US2488452A/en not_active Expired - Lifetime
- 1947-11-25 CH CH275026D patent/CH275026A/en unknown
-
1948
- 1948-12-14 DE DEP24591D patent/DE916331C/en not_active Expired
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1266989B (en) * | 1963-10-30 | 1968-04-25 | Zeiss Carl Fa | Device for interpolation |
Also Published As
Publication number | Publication date |
---|---|
DE916331C (en) | 1954-08-09 |
US2488452A (en) | 1949-11-15 |
NL72659C (en) | 1952-09-15 |
FR955981A (en) | 1950-01-23 |
CH275026A (en) | 1951-04-30 |
BE477678A (en) |
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