DE595370C - Arrangement for changing the brightness of the luminous point in a Braun tube, especially in television systems - Google Patents
Arrangement for changing the brightness of the luminous point in a Braun tube, especially in television systemsInfo
- Publication number
- DE595370C DE595370C DET39050D DET0039050D DE595370C DE 595370 C DE595370 C DE 595370C DE T39050 D DET39050 D DE T39050D DE T0039050 D DET0039050 D DE T0039050D DE 595370 C DE595370 C DE 595370C
- Authority
- DE
- Germany
- Prior art keywords
- brightness
- changing
- arrangement
- television systems
- luminous 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
- 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
- H01J29/52—Arrangements for controlling intensity of ray or beam, e.g. for modulation
Landscapes
- Transforming Electric Information Into Light Information (AREA)
Description
Anordnung zur Veränderung der Helligkeit des Leuchtpunktes in einer Braunschen Röhre, insbesondere in Fernsehanlagen Im Patent 59'4 424 ist eine Braunsche Röhre für Fernsehanlagen beschrieben, bei welcher eine besondere Blende vorgesehen ist, die der Kathodenstrahl nur dann passieren soll, wenn die Spannung an einem zusätzlichen Ablenkplattenpaar gleich Null ist, wobei der Nullwert sich über einen gewissen Teil der Periode erstreckt.Arrangement for changing the brightness of the luminous point in one Braun's tube, especially in television systems. Patent 59'4 424 is a Braun tube Described tube for television systems, in which a special aperture is provided is that the cathode ray should only pass when the voltage is on one additional pair of baffles equals zero, the zero value extending over a extends certain part of the period.
In dem Hauptpatent ist für diesen Zweck nur die elektrostatische Ablenkung des Kathodenstrahles vorgesehen. Die vorliegende Weiterausbildung der Erfindung bezieht sich darauf, daß statt der elektrostatischen Ablenkung die elektromagnetische für diesen besonderen Zweck benutzt wird. Da für die hier in Frage stehende Art der Kathodenstrahlsteuerung die Arbeit des Kathodenstrahles nur während des Nullwertes des Ablenkfeldes ausgenutzt wird, kommen die sonst bei der magnetischen Ablenkung- vorhandenen Nachteile, die z. B. darin bestehen, daß zwischen der Stromstärke in der Ablenkspule und der Strahlablenkung keine Proportionalität besteht, in Fortfall. Gegenüber der elektrostatischen Steuerung hat daher die elektromagnetische für den Zweck der vorliegenden Erfindung den Vorteil, daß der Bau der Röhre vereinfacht wird, da das Steuerorgan außerhalb der Röhre angeordnet sein kann.Only electrostatic deflection is in the main patent for this purpose of the cathode ray provided. The present development of the invention refers to the fact that instead of electrostatic deflection the electromagnetic is used for this particular purpose. Since for the type in question here the cathode ray control the work of the cathode ray only during the zero value of the deflection field is used, the otherwise in the magnetic deflection existing disadvantages, the z. B. consist in that between the current strength in there is no proportionality between the deflection coil and the beam deflection, in omission. Compared to the electrostatic control, therefore, the electromagnetic for the The purpose of the present invention has the advantage that the construction of the tube is simplified because the control member can be arranged outside the tube.
Claims (1)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DET39050D DE595370C (en) | 1931-06-24 | 1931-06-24 | Arrangement for changing the brightness of the luminous point in a Braun tube, especially in television systems |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DET39050D DE595370C (en) | 1931-06-24 | 1931-06-24 | Arrangement for changing the brightness of the luminous point in a Braun tube, especially in television systems |
Publications (1)
Publication Number | Publication Date |
---|---|
DE595370C true DE595370C (en) | 1934-04-09 |
Family
ID=7560373
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DET39050D Expired DE595370C (en) | 1931-06-24 | 1931-06-24 | Arrangement for changing the brightness of the luminous point in a Braun tube, especially in television systems |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE595370C (en) |
-
1931
- 1931-06-24 DE DET39050D patent/DE595370C/en not_active Expired
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