EP0036901A1 - Dispositif pour la production de faisceaux électroniques dans un récipient à décharge sous vide - Google Patents

Dispositif pour la production de faisceaux électroniques dans un récipient à décharge sous vide Download PDF

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Publication number
EP0036901A1
EP0036901A1 EP80101721A EP80101721A EP0036901A1 EP 0036901 A1 EP0036901 A1 EP 0036901A1 EP 80101721 A EP80101721 A EP 80101721A EP 80101721 A EP80101721 A EP 80101721A EP 0036901 A1 EP0036901 A1 EP 0036901A1
Authority
EP
European Patent Office
Prior art keywords
discharge vessel
vacuum discharge
divider system
voltage
resistor
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.)
Withdrawn
Application number
EP80101721A
Other languages
German (de)
English (en)
Inventor
Hans Joachim Preusse
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Norddeutsche Mende Rundfunk KG
Original Assignee
Norddeutsche Mende Rundfunk KG
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Norddeutsche Mende Rundfunk KG filed Critical Norddeutsche Mende Rundfunk KG
Priority to EP80101721A priority Critical patent/EP0036901A1/fr
Publication of EP0036901A1 publication Critical patent/EP0036901A1/fr
Withdrawn legal-status Critical Current

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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
    • H01J29/96—One or more circuit elements structurally associated with the tube

Definitions

  • the invention relates to an arrangement for generating bundled electron beams in a vacuum discharge vessel, preferably a television picture tube or oscillograph tube, with an electron beam generator system with electrodes of different potentials that can be generated by a resistance divider system.
  • band 2-78 / 79 of the group Roederstein 12 silicon high voltage on page - a cascade of the high voltage generation in color televisions offered, which in their interior molded into a synthetic resin include a bleeder.
  • the bleeder is part of a resistance divider system that is used to generate the focus voltage of the color picture tube.
  • the bleeder R 1 forms a voltage divider with a resistor R 2 , which is also cast into the synthetic resin and whose base is guided outwards to the earth via a film rotation resistor, from which the focus voltage is tapped.
  • a relatively long, well high voltage insulated cable is required from the component generating the focus voltage to the focus connection on the color picture tube.
  • Such a cable is not only expensive, but above all it has the unpleasant property of acting as an antenna for very high-frequency vibrations, the magnetic fields of which, in the case of high-energy flashovers inside the picture tube Printed circuit boards and other cabling induce high voltages and high currents, which destroy the semiconductors located there (transistors, IC's, diodes, etc.).
  • it is customary to install spark gaps directly at the connecting pins of the color picture tube in order to derive the internal high-voltage flashovers and protective or damping resistances (see, for example, DBP 11 92 245).
  • the anodes and the focusing electrode are closely adjacent in the interior of the color picture tube in the electron gun system high-voltage flashover in the picture tube, which usually emanates from the anode, the focusing electrode is hit with full energy, and therefore a very complex protective spark gap and a special expensive protective resistor are necessary on the outside of the picture tube holder to catch the high-energy discharge.
  • the object is to avoid all of the above-mentioned disadvantages by means of a fundamentally different arrangement and, overall, to arrive at a more cost-effective arrangement.
  • the object is achieved in that the resistance divider system is mounted inside the vacuum discharge vessel in a vacuum.
  • the high-voltage cable required to supply the focus voltage is no longer required. It is replaced by a simple cable with normal insulation.
  • the expensive 7 kV spark gap can be replaced by a much cheaper one.
  • An inexpensive standard version is sufficient for the protective resistor.
  • Socket and base can be simplified considerably.
  • the special additional plug can be omitted.
  • the connection for the outer film resistance can be compared to the other connections within the socket. Special measures are no longer necessary.
  • FIG. 1 shows the state of the art.
  • a vacuum discharge vessel in this example a color picture tube 1 contains one Base circuit 2, in which connection contacts for the heating, the cathodes, the grid 1 and the grid 2 (screen grid) are arranged.
  • connection 3 for the focus (G 3 ) is also located within this base circuit, but this requires a special high-voltage plug.
  • the contact 4 for the anode voltage, which is approximately 25 kV, is located on the conical part of the color picture tube.
  • a high DC voltage of approximately 25 kV is generated from an AC voltage supplied.
  • the high-voltage generator unit contains, for example, a so-called cascade and a voltage divider, consisting of the resistors R 1 and R 2 for generating the focus voltage of approximately 7 kV.
  • a film rotation resistor 6 is connected from the outside, with which the focus voltage can be set to the required value within the given tolerances.
  • the bleeder is, for example, a meandering layer made of a conductive paste, which is applied to the substrate and is baked on the substrate, according to the known technique of thick-film circuits.
  • the resistance layer has connection points lo, 11 and 12.
  • the connection point lo is connected to a socket pin 13.
  • the connection point 11 is connected to the focus electrode G 3 and the connection point 12 to the anode A.
  • the electron gun system which consists of the individual electrodes, is held together (not shown here) by two longitudinal struts.
  • the bleeder resistor can easily be accommodated either directly or as a component on one of these longitudinal struts.
  • the bleeder is in a vacuum, it is completely protected against external influences, which can lead to a change in the resistance.
  • connection points 10, 11 and 12 to the associated electrodes are advantageously short.
  • the parts 14 and 15 of the resistors R 1 and R 2 are designed in the form of their printing so that they are known in a known manner by a laser beam inserted laterally into the meander can be cut, whereby the value of the resistors R 1 and / or R 2 can be changed.
  • bleeder resistors R 1 and R 2 can be adjusted within certain limits even after installation in the picture tube in the operational state by sending a laser beam through the glass onto the resistors.
  • Figures 3 and 4 show different circuit options. In Figure 3, only the focus voltage is adjusted by the resistor 6 connected here via the bleeder resistors R 1 and R 2 .
  • the circuit is the same as in the prior art Figure 1, but here the components described above, such as e.g. the special spark gap 7 (Fig. 1), the high-load resistor 8, the special connector pin 3 with the associated special plugs, the high-voltage cable as a feed to G3, etc.
  • a normal pin 16 in the base of the color picture tube can be used because of the smaller voltage present at the base of R 2 .
  • Figure 4 shows the possibilities that result from a subsequent adjustment of the bleeder resistors R 1 and R 2 .
  • the screen grating G 2 is also connected to the connecting pins 16 here.
  • the screen grid voltage and thus the so-called "cut-off point" of the color picture tube can now be set with the film rotation resistor 17.

Landscapes

  • Vessels, Lead-In Wires, Accessory Apparatuses For Cathode-Ray Tubes (AREA)
EP80101721A 1980-04-01 1980-04-01 Dispositif pour la production de faisceaux électroniques dans un récipient à décharge sous vide Withdrawn EP0036901A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP80101721A EP0036901A1 (fr) 1980-04-01 1980-04-01 Dispositif pour la production de faisceaux électroniques dans un récipient à décharge sous vide

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP80101721A EP0036901A1 (fr) 1980-04-01 1980-04-01 Dispositif pour la production de faisceaux électroniques dans un récipient à décharge sous vide

Publications (1)

Publication Number Publication Date
EP0036901A1 true EP0036901A1 (fr) 1981-10-07

Family

ID=8186648

Family Applications (1)

Application Number Title Priority Date Filing Date
EP80101721A Withdrawn EP0036901A1 (fr) 1980-04-01 1980-04-01 Dispositif pour la production de faisceaux électroniques dans un récipient à décharge sous vide

Country Status (1)

Country Link
EP (1) EP0036901A1 (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2513061A1 (fr) * 1981-06-12 1983-03-18 Thomson Csf Dispositif de polarisation multiple de cathode de tube a rayons x et source radiogene comportant un tel dispositif
FR2556878A1 (fr) * 1983-12-16 1985-06-21 Sony Corp Resistance pour un cathoscope
FR2562714A1 (fr) * 1984-04-06 1985-10-11 Sony Corp Resistance destinee a etre employee dans les tubes a rayons cathodiques
WO2001033602A1 (fr) * 1999-10-29 2001-05-10 Koninklijke Philips Electronics N.V. Résistance et tube à rayons cathodiques
CN103068141A (zh) * 2012-12-25 2013-04-24 江苏达胜加速器制造有限公司 一种加速管

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1212173B (de) * 1959-09-17 1966-03-10 Blaupunkt Werke Gmbh Schutzeinrichtung fuer Geraete mit Elektronenstrahlroehren
DE1279216B (de) * 1961-10-09 1968-10-03 Philips Nv Schaltungsanordnung fuer eine Kathodenstrahlroehre
DE2131356A1 (de) * 1971-06-24 1972-12-28 Rohde & Schwarz Verfahren zum Trimmen von in Duenn- oder Dickschichttechnik hergestellten elektrischen Widerstaenden
DE1192245B (de) * 1964-02-08 1978-02-02 Norddeutsche Mende Rundfunk K.G., Bremen-Hemelingen Schutzschaltung für den Transistor der Video-Endstufe in Fernsehempfängern
US4146673A (en) * 1977-10-27 1979-03-27 E. I. Du Pont De Nemours And Company Process of film resistor laser trimming and composition of removable coating used therein

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1212173B (de) * 1959-09-17 1966-03-10 Blaupunkt Werke Gmbh Schutzeinrichtung fuer Geraete mit Elektronenstrahlroehren
DE1279216B (de) * 1961-10-09 1968-10-03 Philips Nv Schaltungsanordnung fuer eine Kathodenstrahlroehre
DE1192245B (de) * 1964-02-08 1978-02-02 Norddeutsche Mende Rundfunk K.G., Bremen-Hemelingen Schutzschaltung für den Transistor der Video-Endstufe in Fernsehempfängern
DE2131356A1 (de) * 1971-06-24 1972-12-28 Rohde & Schwarz Verfahren zum Trimmen von in Duenn- oder Dickschichttechnik hergestellten elektrischen Widerstaenden
US4146673A (en) * 1977-10-27 1979-03-27 E. I. Du Pont De Nemours And Company Process of film resistor laser trimming and composition of removable coating used therein

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2513061A1 (fr) * 1981-06-12 1983-03-18 Thomson Csf Dispositif de polarisation multiple de cathode de tube a rayons x et source radiogene comportant un tel dispositif
FR2556878A1 (fr) * 1983-12-16 1985-06-21 Sony Corp Resistance pour un cathoscope
GB2152744A (en) * 1983-12-16 1985-08-07 Sony Corp Resistors for use in cathode ray tubes
FR2562714A1 (fr) * 1984-04-06 1985-10-11 Sony Corp Resistance destinee a etre employee dans les tubes a rayons cathodiques
WO2001033602A1 (fr) * 1999-10-29 2001-05-10 Koninklijke Philips Electronics N.V. Résistance et tube à rayons cathodiques
US6593697B1 (en) 1999-10-29 2003-07-15 Koninklijke Philips Electronics N.V. Resistor assembly and cathode ray tube
CN103068141A (zh) * 2012-12-25 2013-04-24 江苏达胜加速器制造有限公司 一种加速管

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PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

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Effective date: 19810630

AK Designated contracting states

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Inventor name: PREUSSE, HANS JOACHIM