DE750218C - Device for the electromagnetic deflection of a cathode ray bundle - Google Patents
Device for the electromagnetic deflection of a cathode ray bundleInfo
- Publication number
- DE750218C DE750218C DER97739D DER0097739D DE750218C DE 750218 C DE750218 C DE 750218C DE R97739 D DER97739 D DE R97739D DE R0097739 D DER0097739 D DE R0097739D DE 750218 C DE750218 C DE 750218C
- Authority
- DE
- Germany
- Prior art keywords
- cathode ray
- coils
- ray bundle
- electromagnetic deflection
- iron yoke
- 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
- 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
- H01J29/72—Arrangements for deflecting ray or beam along one straight line or along two perpendicular straight lines
- H01J29/76—Deflecting by magnetic fields only
- H01J29/764—Deflecting by magnetic fields only using toroidal windings
Description
Zur elektromagnetischen Ablenkung eines Kathodenstrahlbüschels nach zwei zueinander senkrechten Koordinaten, beispielsweise für Fernsehröhren, kann man in bekannter Weise ein die Röhre umgebendes geschlossenes Eisenjoch verwenden, welches vier dem Röhrenhals zugewendete Polschuhansätze be-' sitzt, auf denen vier Spulen angeordnet sind, von denen je zwei einander gegenüberliegende von demselben Ablenkström durchflossen werden. Es ist bekannt, zur Ablenkung eines Kathodenstrahles in einer Richtung ebenfalls ein die Röhre umgebendes geschlossenes Eisenjoch zu verwenden, welches nur zweiFor the electromagnetic deflection of a cathode ray bundle towards each other Vertical coordinates, for example for television tubes, can be used in a known manner use a closed iron yoke surrounding the tube, which has four pole piece attachments facing the tube neck. sits on which four coils are arranged, two of which are opposite each other be traversed by the same deflecting current. It is known to distract a Cathode ray in one direction is also a closed one surrounding the tube Eisenjoch to use which only two
ig Polschuhe trägt und bei welchen die Spulen jedoch nicht auf den Polschuhansätzen angebracht sind, sondern vielmehr auf zwei zueinander und zu der Verbindungslinie der Polschuhe parallelen Schenkeln des Joches. ig carries pole shoes and in which the coils are not attached to the pole shoe attachments, but rather on two legs of the yoke that are parallel to one another and to the connecting line of the pole shoes.
Zur elektromagnetischen Ablenkung eines . Kathodenstrahlbüschels, insbesondere für Braunsche Röhren, unter Verwendung eines geschlossenen, die Röhre umgebenden Eisenjoehes werden erfindungsgemäß auf diesem Eisenjoch ohne Polschuhe selbst vier Spulen symmetrisch zum unabgelenkten Strahl angeordnet, van denen je zwei einander gegenüberliegende das Kathodenstrahlbüschel in derselben Richtung ablenken. Durch diese Anordnung wird gegenüber den obenerwähnten Einrichtungen nicht nur eine bedeutende Vereinfachung des notwendigen Eisenkörpers, sondern auch der Fortschritt erzielt, daß man unter Verwendung nur eines einzigen Eisenkörpers eine Ablenkung nach zwei zueinander senkrechten Koordinaten bewerkstelligen kann, wobei eine besonders große Homogenität des Feldes auftritt.For the electromagnetic deflection of a. Cathode ray bundles, in particular for Braun tubes, using a closed iron joint that surrounds the tube according to the invention, four coils are arranged symmetrically to the undeflected beam on this iron yoke without pole shoes itself, van which two opposite each other deflect the cathode ray bundle in the same direction. Through this arrangement becomes not only a significant simplification compared to the above-mentioned facilities of the necessary iron body, but also the progress achieved that one using only a single iron body can accomplish a deflection according to two mutually perpendicular coordinates, with a particularly high degree of homogeneity of the field occurs.
Ein Ausführungsform der Erfindung ist in der Abbildung veranschaulicht. In dieser ist das Eisenjoch, welches die Röhre, die durch einen strichpunktierten Kreis 9 angedeutet ist, umgibt, mit 22 bezeichnet. Auf den paarweise zueinander parallelen Schenkeln dieses Eisenjoches sitzen vier Spulen, die mit 19, 21, 23 und 24 bezeichnet sind. Die Spulen sind, wie in der Abbildung auch angedeutet ist, derart zusammengeschaltet, daß je zwei ein-An embodiment of the invention is illustrated in the figure. In this is the iron yoke, which is the tube indicated by a dot-dash circle 9 is, surrounds, denoted by 22. On the legs that are parallel to each other in pairs Eisenjoches sit four coils with 19, 21, 23 and 24 are designated. As indicated in the figure, the coils are interconnected in such a way that two
ander gegenüberliegende das Rathodenstrahlbüschel in derselben Richtung ablenken. Wenn man für die Spulen 19 und 21 eine bestimmte Stromrichtung annimmt, bilden sich die Nord- und Südpole, die in der Abbildung mit Λτ und S bezeichnet sind, aus. Diese erzeugen einen Fluß, der etwa in der Mitte des linken der beiden senkrechten parallelen Schenkel des Joches 22 austritt, den Röhrenhals durchsetzt und etwa in der Mitte des rechten senkrechten Schenkels in das Eisenjoch eintritt. Dabei wird beispielsweise die Spule 23 in ihrer oberen Hälfte von einem Fluß durchsetzt, der die umgekehrte Richtung besitzt wie der ihre untere Hälfte durchsetzende Fluß, so daß die von diesen beiden Flüssen erzeugten elektromotorischen Kräfte sich innerhalb der Spule 23 gegeneinander aufheben. Dasselbe gilt für die Spule 24. An den Spulen 23 und 24 bilden sich unter der Annahme einer bestimmten Stromrichtung Nord- und Südpole aus, wie es ebenfalls durch Λ* und 6" in der Abbildung angedeutet ist. Der von diesen beiden Spulen erzeugte Fluß durchsetzt den Röhrenhals in senkrechter Richtung, und die in den Wicklungen 19 und 21 erzeugten elektromotorischen Kräfte heben sich ebenfalls gegeneinander auf. Man kann daher mit einer Spuleiieinrichtung nach der Abbildung den Kathodenstrahl in zwei zueinander senkrechten Richtungen in jeder gewünschten Weise ablenken. Insbesondere eignet sich die Anordnung für die Kathodenstrahlablenkung beim Fernsehen in der Zeilen- und der Bildkoordinate.on the other opposite deflect the rathode beam bundle in the same direction. If a certain current direction is assumed for the coils 19 and 21, the north and south poles, which are denoted by Λ τ and S in the figure, are formed. These generate a flow which emerges approximately in the middle of the left of the two perpendicular parallel legs of the yoke 22, penetrates the tube neck and enters the iron yoke approximately in the middle of the right vertical leg. For example, the coil 23 is traversed in its upper half by a flux which has the opposite direction as the flux passing through its lower half, so that the electromotive forces generated by these two fluxes cancel each other out within the coil 23. The same applies to coil 24. Assuming a certain current direction, north and south poles are formed on coils 23 and 24, as is also indicated by Λ * and 6 "in the figure. The flux generated by these two coils permeates the tube neck in the vertical direction, and the electromotive forces generated in the windings 19 and 21 also cancel each other out. The cathode ray can therefore be deflected in any desired way in two mutually perpendicular directions using a coil unit as shown in the figure. The arrangement is particularly suitable for the cathode ray deflection in television in the line and image coordinates.
Statt der Einzelspulen 19,21. 23, 24 können auch je zwei Spulen vorhanden sein. Je zwei dieser Einzelspulen sind ihrerseits hintereinandergeschaltet. Bezüglich der Entkopplung der für die eine Ablenkrichtung dienenden Spulen von den für die andere Ablenkrichtung bestimmten, d. h. bezüglich der obenerwähnten Aufhebung der elektromotorischen Kräfte, arbeitet diese Anordnung ebenso wie diejenige nach der Abbildung.Instead of the individual coils 19.21. 23, 24 can there may also be two coils each. Two of these individual coils are in turn connected in series. With regard to the decoupling of the coils used for one deflection direction from those for the other deflection direction specific, d. H. regarding the abovementioned cancellation of the electromotive forces, this arrangement works just like the one according to the illustration.
Claims (1)
französische Patentschriften Nr. 762 416,to 773,711;
French patents No. 762 416,
britische - . - 412 435,782 219;
British -. - 412 435,
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US47556A US2164931A (en) | 1935-10-31 | 1935-10-31 | Cathode ray tube deflecting device |
Publications (1)
Publication Number | Publication Date |
---|---|
DE750218C true DE750218C (en) | 1945-01-04 |
Family
ID=21949653
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DER97739D Expired DE750218C (en) | 1935-10-31 | 1936-11-01 | Device for the electromagnetic deflection of a cathode ray bundle |
Country Status (2)
Country | Link |
---|---|
US (2) | US2164931A (en) |
DE (1) | DE750218C (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2748324A (en) * | 1951-10-26 | 1956-05-29 | Gen Electric | Deflection yoke for cathode ray tube |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB605572A (en) * | 1945-07-28 | 1948-07-27 | Eric William Bull | Improvements in or relating to circuit arrangements embodying cathode ray tubes |
US2568456A (en) * | 1949-12-06 | 1951-09-18 | Gen Electric | Electromagnetic deflection yoke structure |
SU370899A1 (en) * | 1971-10-26 | 1979-04-05 | Институт Электросварки Им. Е.О. Патона Ан Украинской Сср | Device for electron radiation heating of materials |
Citations (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1768262A (en) * | 1928-02-07 | 1930-06-24 | Bell Telephone Labor Inc | Phase measuring system and method |
FR762416A (en) * | 1932-10-29 | 1934-04-11 | Rca Corp | TV system |
US1955320A (en) * | 1929-11-16 | 1934-04-17 | Westinghouse Electric & Mfg Co | Television synchronization method |
US1956943A (en) * | 1931-09-11 | 1934-05-01 | Rca Corp | Cathode ray tube mount |
GB412435A (en) * | 1932-08-11 | 1934-06-28 | Marconi Wireless Telegraph Co | Improvements in or relating to thermionic amplifier arrangements for use in television systems |
GB418940A (en) * | 1932-11-30 | 1934-11-02 | Marconi Wireless Telegraph Co | Improvements in or relating to cathode ray tube apparatus for use in television and like systems |
FR773711A (en) * | 1933-05-27 | 1934-11-24 | Loewe Opta Gmbh | Cathode ray tube, especially for television |
GB427113A (en) * | 1932-10-15 | 1935-04-16 | Marconi Wireless Telegraph Co | Improvements in or relating to television oscillographic and like apparatus |
FR44922E (en) * | 1934-06-20 | 1935-05-01 | Ventilation devices | |
FR782219A (en) * | 1933-12-07 | 1935-05-31 | Telefunken Gmbh | Device for deflecting a cathode beam along coordinate axes |
-
0
- US US385358D patent/USB385358I5/en active Pending
-
1935
- 1935-10-31 US US47556A patent/US2164931A/en not_active Expired - Lifetime
-
1936
- 1936-11-01 DE DER97739D patent/DE750218C/en not_active Expired
Patent Citations (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1768262A (en) * | 1928-02-07 | 1930-06-24 | Bell Telephone Labor Inc | Phase measuring system and method |
US1955320A (en) * | 1929-11-16 | 1934-04-17 | Westinghouse Electric & Mfg Co | Television synchronization method |
US1956943A (en) * | 1931-09-11 | 1934-05-01 | Rca Corp | Cathode ray tube mount |
GB412435A (en) * | 1932-08-11 | 1934-06-28 | Marconi Wireless Telegraph Co | Improvements in or relating to thermionic amplifier arrangements for use in television systems |
GB427113A (en) * | 1932-10-15 | 1935-04-16 | Marconi Wireless Telegraph Co | Improvements in or relating to television oscillographic and like apparatus |
FR762416A (en) * | 1932-10-29 | 1934-04-11 | Rca Corp | TV system |
GB418940A (en) * | 1932-11-30 | 1934-11-02 | Marconi Wireless Telegraph Co | Improvements in or relating to cathode ray tube apparatus for use in television and like systems |
FR773711A (en) * | 1933-05-27 | 1934-11-24 | Loewe Opta Gmbh | Cathode ray tube, especially for television |
GB440810A (en) * | 1933-05-27 | 1936-01-07 | Loewe Opta Gmbh | Cathode ray tube |
FR782219A (en) * | 1933-12-07 | 1935-05-31 | Telefunken Gmbh | Device for deflecting a cathode beam along coordinate axes |
FR44922E (en) * | 1934-06-20 | 1935-05-01 | Ventilation devices |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2748324A (en) * | 1951-10-26 | 1956-05-29 | Gen Electric | Deflection yoke for cathode ray tube |
Also Published As
Publication number | Publication date |
---|---|
USB385358I5 (en) | |
US2164931A (en) | 1939-07-04 |
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