US1949048A - High tension rectifier comprising an auxiliary electrode - Google Patents

High tension rectifier comprising an auxiliary electrode Download PDF

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Publication number
US1949048A
US1949048A US270117A US27011728A US1949048A US 1949048 A US1949048 A US 1949048A US 270117 A US270117 A US 270117A US 27011728 A US27011728 A US 27011728A US 1949048 A US1949048 A US 1949048A
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US
United States
Prior art keywords
cathode
discharge
auxiliary
anode
rectifier
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 - Lifetime
Application number
US270117A
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English (en)
Inventor
Holst Gilles
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.)
Koninklijke Philips NV
Original Assignee
Philips Gloeilampenfabrieken NV
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 Philips Gloeilampenfabrieken NV filed Critical Philips Gloeilampenfabrieken NV
Application granted granted Critical
Publication of US1949048A publication Critical patent/US1949048A/en
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Expired - Lifetime legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
    • H02M7/02—Conversion of ac power input into dc power output without possibility of reversal
    • H02M7/04—Conversion of ac power input into dc power output without possibility of reversal by static converters
    • H02M7/12—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
    • H02M7/145—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a thyratron or thyristor type requiring extinguishing means
    • H02M7/15—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a thyratron or thyristor type requiring extinguishing means using discharge tubes only
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M1/00—Details of apparatus for conversion
    • H02M1/02—Circuits specially adapted for the generation of grid-control or igniter-control voltages for discharge tubes incorporated in static converters
    • H02M1/04—Circuits specially adapted for the generation of grid-control or igniter-control voltages for discharge tubes incorporated in static converters for tubes with grid control
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
    • H02M7/02—Conversion of ac power input into dc power output without possibility of reversal
    • H02M7/04—Conversion of ac power input into dc power output without possibility of reversal by static converters
    • H02M7/046—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes

Definitions

  • This invention relates to an installation for rectifying alternating current, particularly of high voltage, in which an electric discharge tube is used.
  • an installation for rectifying alternating current comprises a gasfilled electric discharge tube having an incandescent cathode, one or more anodes and one or more auxiliary electrodes for assisting the ignition, said auxiliary electrode or electrodes being connected to the anode of the main discharge tube via another discharge tube having rectifying properties.
  • This second discharge tube which hereinafter v will be referred to as auxiliary rectifier, is so connected that in the main discharge tube the path from. the cathode to an auxiliary electrode has the same direction as the path from the cathode to the anode in the auxiliary rectifier so that both the main discharge tube and the auxiliary rectifier allow current to pass in one direction but neither of them give passage to current in the other direction.
  • auxiliary electrodes of the main discharge tube assuming potentials which can only be positive during the passage of current, for if current passes through the two discharge tubes, the auxiliary electrodes will take a positive potential the value of which depends on the voltage supplied and on the resistance of the path that leads from the cathode of the main discharge tube via the auxiliary electrode and through the auxiliary rectifier to the anode of the main discharge tube. If on the contrary no current passes through the main discharge tube, the auxiliary rectifier is likewise blocked so that the auxiliary electrodes cannot take potentials that may assist a discharge in the wrong direction in the main discharge tube.
  • the auxiliary rectifier is connected in series with one or more resistances that limit the current in the circuit of the auxiliary rectifier.
  • a resistance may be connected between each of the auxiliary electrodes and the cathode of the auxiliary rectifier.
  • a condenser may be connected in parallel with the path of discharge between thecathode and the auxiliary electrode.
  • an electric discharge tube having an incandescent cathode and a gaseous filling may be used in which the distance between the cathode and the anode or anodes is so large that any ignition in the wrong direction is practically prevented, and in which one or more auxiliary electrodes are arranged for assisting the ignition.
  • a discharge tube 1 comprises a cathode 2, an anode 3 and two auxiliary electrodes 4 and 5.
  • the cathode is preferably coated with material that readily emits electrons so as to be adapted to sufliciently emit electrons even after but moderate heating.
  • the discharge tube is filled with gas, preferably a rare gas under a pressure of say 3 cm.
  • the distance between the cathode and the anode is so large that even in the absence of the auxiliary electrodes an ignition in the wrong direction cannot take place.
  • the cathode and the anode are connected to the ends of the secondary 9 of a transformer the primary of which is not illustrated.
  • the auxiliary electrodes 4 and 5 and the end of the secondary of the transformer that is connected to the anode have connected between them a rectifier 6 comprising a cathode '7 and an anode 8. As such a high vacuum rectifier may be satisfactorily used.
  • the auxiliary electrodes have connected in series with them resistances 11 and 12 which limit the current in the circuit of the auxiliary rectifier.
  • the potential of the source is applied between the cathode 2 and each of the grids 4 and 5 and plate 3.
  • the gap between the cathode and the plate being the longest, that between the cathode and the grid 4 the next longest, and that between the cathode and grid 5 being the smallest, a discharge will first occur between the cathode and the grid 5; the ionization of the gas-filling in this portion of the discharge path then causes the ignition of the discharge between the cathode and the grid 4, and in a similar manner, the discharge between the cathode and the grid 4 causes the ignition of the discharge between the cathode and the anodes 3.
  • the influence of the condensers 13 and 14 is to intensify the ionization as a result of disruptive discharge.
  • a steadying resistance 10 is mounted in the main circuit.
  • condensers 13 and 14 In parallel with the paths of discharge cathode-auxiliary electrodes in the main discharge tube are mounted condensers 13 and 14 which are adapted to intensify the auxiliary discharges.
  • the load which may be of any desired sort, is schematically indicated at 15, 16.
  • An installation for the rectification of alternating current comprising a rectifier tube having a gas-filling, an incandescent cathode, an anode and an auxiliary electrode, the installation comprising an auxiliary discharge tube having rectifying properties, said auxiliary electrode being connected to the anode of said main rectifier tube via said auxiliary discharge tube, and a condenser connected between said auxiliary electrode and said incandescent cathode.
  • a rectifying system comprising a gas-filled space discharge tube having an incandesciole cathode and at least one anode spaced so widely apart that inverse discharge will be inhibited and discharge in the desired direction will occur only with difficulty, the tube also having an auxiliary electrode extending into the discharge space, for facilitating discharge in the desired direction, a source of full wave alternating potential connected across said cathode and anode, means for impressing a positive bias on said auxiliary electrode during the desired half cycle, and a space discharge tube for unbiasing said auxiliary electrode and inhibiting current ilow thereto during the alternate half cycle, and a condenser connected between said auxiliary electrode and said incandescible cathode.
  • a rectifying system comprising a gas-filled space discharge tube having an incandescible cathode and at least one anode spaced so widely apart that inverse discharge will be inhibited and discharge in the desired direction will occur only with difiiculty, the tube also having at least two auxiliary electrodes extending into the discharge space, for facilitating discharge in the desired direction, a source of full wave alternating potential connected across said cathode and anode, and means for impressing a positive bias on said auxiliary electrodes during the desired half cycle.
  • a rectifying system comprising a gas-filled space discharge tube having an incandescible cathode and at least one anode spaced so widely apart that inverse discharge will be inhibited and discharge in the desired direction will occur only with difficulty, the tube also having at least two auxiliary electrodes extending into the discharge space for facilitating discharge in the desired direction, a source of full wave alternating potential connected across said cathode and anode, means for impressing a positive bias on said auxiliary electrodes during the desired half cycle, and a space discharge tube for unbiasing said auxiliary electrodes and inhibiting current flow thereto during the alternate half cycle.
  • a discharge tube comprising a tubular envelope of great length, and a gas-filling, said tube having electrodes including an anode, an incandescible cathode and a plurality of auxiliary electrodes spaced in the discharge path between said anode and cathode, and electric circuits interconnecting said electrodes and means to apply potentials to said electrodes which are increasingly positive from the cathode towards the anode, said auxiliary electrodes upon application of such potentials causing the successive ignition of the portions of said discharge path falling between the cathode and successive auxiliary electrodes to produce a discharge extending from the cathode to the anode.

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Physical Or Chemical Processes And Apparatus (AREA)
  • Lasers (AREA)
US270117A 1927-05-06 1928-04-14 High tension rectifier comprising an auxiliary electrode Expired - Lifetime US1949048A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL1949048X 1927-05-06

Publications (1)

Publication Number Publication Date
US1949048A true US1949048A (en) 1934-02-27

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ID=19873357

Family Applications (1)

Application Number Title Priority Date Filing Date
US270117A Expired - Lifetime US1949048A (en) 1927-05-06 1928-04-14 High tension rectifier comprising an auxiliary electrode

Country Status (4)

Country Link
US (1) US1949048A (xx)
BE (1) BE350887A (xx)
DE (1) DE559320C (xx)
NL (1) NL25373C (xx)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4499405A (en) * 1981-05-20 1985-02-12 Rpc Industries Hot cathode for broad beam electron gun

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1073060B (de) * 1960-01-14 IBM Deutschland Internationale Büro-Maschinen Gesellschaft m.b.H., Sindelfingen (Württ.) Gasentladungsröhre zum Abschalten stark induktiv belasteter Stromkreise
DE942578C (de) * 1938-01-30 1956-05-03 Siemens Ag Anordnung zur Herabsetzung der von einer Zuendeinrichtung fuer gas- oder dampfgefuellte Entladungsgefaesse zu liefernden Zuendleistung
DE943245C (de) * 1940-03-02 1956-05-17 Siemens Ag Einrichtung zur regelbaren Zuendung eines Lichtbogenentladungsgefaesses mit einer Hilfselektrode zwischen Steuergitter und Anode
DE973732C (de) * 1941-09-17 1960-05-25 Brown Ag Gas- und/oder dampfgefuelltes Entladungsgefaess mit fremdgespeisten Zwischenelektroden
DE855744C (de) * 1941-09-17 1952-11-17 Brown Ag Stromrichter mit fremdgespeisten Steuerelektroden

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4499405A (en) * 1981-05-20 1985-02-12 Rpc Industries Hot cathode for broad beam electron gun

Also Published As

Publication number Publication date
NL25373C (xx)
DE559320C (de) 1932-09-19
BE350887A (xx)

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