US2401013A - Firing circuit for ignitrons - Google Patents

Firing circuit for ignitrons Download PDF

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Publication number
US2401013A
US2401013A US346287A US34628740A US2401013A US 2401013 A US2401013 A US 2401013A US 346287 A US346287 A US 346287A US 34628740 A US34628740 A US 34628740A US 2401013 A US2401013 A US 2401013A
Authority
US
United States
Prior art keywords
make
current
alive
series
circuit
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
US346287A
Other languages
English (en)
Inventor
William E Pakala
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.)
CBS Corp
Original Assignee
Westinghouse Electric Corp
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
Priority to BE443043D priority Critical patent/BE443043A/xx
Priority to NL69616D priority patent/NL69616C/xx
Application filed by Westinghouse Electric Corp filed Critical Westinghouse Electric Corp
Priority to US346287A priority patent/US2401013A/en
Priority to GB6631/41A priority patent/GB546738A/en
Priority to CH222640D priority patent/CH222640A/fr
Priority to DES5044D priority patent/DE949424C/de
Application granted granted Critical
Publication of US2401013A publication Critical patent/US2401013A/en
Priority to FR938746D priority patent/FR938746A/fr
Anticipated expiration legal-status Critical
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
    • 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
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J2893/00—Discharge tubes and lamps
    • H01J2893/0072—Disassembly or repair of discharge tubes
    • H01J2893/0073—Discharge tubes with liquid poolcathodes; constructional details
    • H01J2893/0074—Cathodic cups; Screens; Reflectors; Filters; Windows; Protection against mercury deposition; Returning condensed electrode material to the cathodic cup; Liquid electrode level control
    • H01J2893/0087—Igniting means; Cathode spot maintaining or extinguishing means

Definitions

  • Figure 1 is a schematic illlustration of a vapor electrlc converter according to my invention
  • Fig. 2 is a diagrammatic illustration of the wave -form as secured by my improved impulsing' device
  • v v Fig. 3 is a modification according to my invention.
  • an alternating current circuit l is connected to a direct current .circuit 2 by means of a suitable rectifier transformer 3,
  • the control system comprises a suitable alternating-current source shown in the form of a control transformer 9 having a plurality of secondary phase windings l corresponding in number to the make-alive electrodes 8 to be controlled.
  • the primary H of the control transformer 8 is connected in any suitable alternating current source such as the alternating current circuit l.
  • a phase shifting device such as the induction phase shifter I2 is inserted between the alternating cur rent source I and the primary H of the control transformer 9.
  • a saturable reactor I3 which includes a winding It in series between the phase terminals l of the control transformer 9 and the asso- 25 ciated make-alive electrodes 8.
  • Each series winding it is associated with a magnetic core l6 of a material having high permeability and a sharp saturation point.
  • a suitable unidirectional conductor or asymmetrically conduct.- 3 ing device I! or rectifying device is inserted in series with the make-alive electrode 8 so that the control impulses of only the desired polarity are conducted to the make-alive electrodes 8.
  • a suitable unidirectional conductor or asymmetrically conducting device 18 is usually inserted in shunt with the make-alive electhe saturable reactor I3 alone.
  • the series rectifier l'l permits the passage of a half-wave of this potential 20 to the makealive electrode 8 while the shunt rectifier l8 shunts out the inverse half-cycle so that during the forward half-cycle a cathode spot will be formed in the valve 4 by the flow of potential through the series rectifier l1 and the make-alive electrode 8 and during the inverse half cycle there will be no action at the make-alive electrode 8.
  • the'shield I is connected to a suitable source of in-phase potential herein "illustrated as the anode circuit. After the formation of the cathode spot a preliminary discharge will take place from the anode shield 1 thus ionizing the anode space and permitting the ready pick up of the current carrying arc to the anode 6.
  • a make-alive control-system comprising a vapor-electric valvedevice, an alternating-current source; an inductance-device having a saturable core; a series asymmetrically conducting device; a shunting asymmetrically conducting device; circuit-means, including said alternatingcurrent source, for impressing upon said inductance-device an alternating voltage having sub-' stantially equal positive and negative impulses.
  • make-alive circuit-means including said series asymmetrically conducting device, for utilizing said inductance-device to cause peaked positive current-impulses to be supplied to a make-alive electrode of said valve-device; and a shunting circuit, including said shunting asymmetrically conducting device, connected in shunt-circuit relation around said make-alive electrode and said series asymmetrically conducting device, whereby a path is provided for the peaked negative current-impulses.
  • a control system comprising, an altemating-current source; an inductance-device havregardless of the condition of the make-alive electrode, thus making the operation of the vaporelectric valves 4 more uniform anode shields I- have been connected to a source controllable in phase with relation to the potential applied to the main anode. While any suitablesource of, control potential can be utilized, I prefer to use an intermediate tap 22 on each of the phase windings ID of the control transformer 9 to secure a suitable potential for application to the anode shield 1.
  • a make-alive control-system comprising a vapor-electric valve-device: an alternating-current source; a saturable reactor; a series asymmetrically conducting device; a shunting asymmetrically conducting device; a make-alive circuit including, in series-circuit relation, said alternating-current source, said saturable reactor, said series asymmetrically conducting device, and a make-alive electrode ofsaid valve-device, whereby unidirectional-current impulses of one polarity are delivered, through said series asymmetrically conducting device, to said make-alive electrode; and a shunting circuit, including said shunting asymmetrically conducting device, coning a.
  • circuit-means including said alternating-current source, for impressing upon said inductance-device an alternating voltage having substantially equal positive and negative impulses, the magnitude of said impulses being sufllcient to saturate the inductance-device at a portion of each of the positive and negative imq pulses, whereby a discontinuity in the saturationcurve of the inductance-device is obtained at said portion of each ositive and negative impulse; a current-supplying circuit-means, including said series asymmetrically conducting device, for utilizing said inductance-device to cause peaked positive current impulses to be supplied to a load-device; and a. shunting circuit, including said shunting asymmetrically conducting device, connected in shunt-circuit relation around said load device and said series asymmetrically conducting device, whereby a path is provided for the peaked negative current-impulses.
  • a control system comprising, an alternatingcurrent source; an inductance-device having a saturable core; a capacitor; a series asymmetrically conducting device; a shunting asymmetrically conducting device; circuit-means, including said alternating-current source; and also including said capacitor and said inductance'device, for impressing upon said inductance device an alternating voltage having substantially equal positive and negative impulses, the magnitude of the impulses being sufficient to saturate the inductance-device at a portion of each of the.
  • each positive and negative impulse said capacitor and said inductance device being connected in series for controlling the shape and duration of the current impulses, a current-supplying circult-means, including said series asymmetrically conducting device, for utilizing said inductance-device to cause peaked positive currentimpulses to :be supplied to a load-device; and a shunting circuit, including said shunting asymmetrically conducting device, connected in shuntcircuit relation around said load device and said series asymmetrically conducting device, whereby a. path is provided for the peaked negative current-impulses.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Ignition Installations For Internal Combustion Engines (AREA)
  • Physical Or Chemical Processes And Apparatus (AREA)
  • Generation Of Surge Voltage And Current (AREA)
US346287A 1940-07-19 1940-07-19 Firing circuit for ignitrons Expired - Lifetime US2401013A (en)

Priority Applications (7)

Application Number Priority Date Filing Date Title
BE443043D BE443043A (de) 1940-07-19
NL69616D NL69616C (de) 1940-07-19
US346287A US2401013A (en) 1940-07-19 1940-07-19 Firing circuit for ignitrons
GB6631/41A GB546738A (en) 1940-07-19 1941-05-23 Improvements in or relating to control circuits for vapour electric discharge devices
CH222640D CH222640A (fr) 1940-07-19 1941-07-15 Installation électrique comprenant un convertisseur de courant à vapeurs.
DES5044D DE949424C (de) 1940-07-19 1941-07-20 Schaltungsanordnung fuer die Steuerkreise von Entladungsgefaessen mit Innenzuendern
FR938746D FR938746A (fr) 1940-07-19 1946-11-07 Circuits d'amorcage pour ignitrons

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US346287A US2401013A (en) 1940-07-19 1940-07-19 Firing circuit for ignitrons

Publications (1)

Publication Number Publication Date
US2401013A true US2401013A (en) 1946-05-28

Family

ID=23358727

Family Applications (1)

Application Number Title Priority Date Filing Date
US346287A Expired - Lifetime US2401013A (en) 1940-07-19 1940-07-19 Firing circuit for ignitrons

Country Status (7)

Country Link
US (1) US2401013A (de)
BE (1) BE443043A (de)
CH (1) CH222640A (de)
DE (1) DE949424C (de)
FR (1) FR938746A (de)
GB (1) GB546738A (de)
NL (1) NL69616C (de)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2512482A (en) * 1946-07-06 1950-06-20 Weltronic Co Electrical control apparatus
DE1057263B (de) * 1957-03-04 1959-05-14 H A Schlatter A G Elektr Schwe Steuerschaltung fuer Gasentladungsroehren beim Widerstandsschweissen

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE169041C (de) *
DE415910C (de) * 1923-01-05 1925-07-03 Pierre Marie Gabriel Toulon Anordnung zur Regelung der Stromstaerke in Lichtbogengleichrichtern
DE681449C (de) * 1931-11-10 1939-09-23 Aeg Anordnung zur Erzeugung von Wechselspannungen spitzer Wellenform
US1921704A (en) * 1932-05-24 1933-08-08 Gen Electric Electric valve circuits
BE396704A (fr) * 1933-06-03 1933-07-31 Acec Dispositif de contrôle des redresseurs à arc par impulsions positives
DE652146C (de) * 1933-08-25 1937-10-26 Aeg Verfahren zur Gittersteuerung von elastisch arbeitenden Umrichtern
DE678921C (de) * 1933-09-07 1939-07-25 Siemens Schuckertwerke Akt Ges Elektrischer Gas- oder Dampfentladungsapparat
DE676128C (de) * 1934-10-11 1939-05-27 Siemens Schuckertwerke Akt Ges Einrichtung zur Ausloesung von Schalt- oder Steuerimpulsen zu einem innerhalb einer Periode einer Wechselspannung waehlbaren Zeitpunkt
DE647317C (de) * 1935-10-26 1937-07-02 Aeg Einrichtung zur Erweiterung des Regelbereiches bei zur Lieferung der Steuerspannungen fuer gittergesteuerte Dampf- oder Gasentladungsstrecken dienenden Phasenschieberbrueckenanordnungen
US2157925A (en) * 1937-03-13 1939-05-09 Westinghouse Electric & Mfg Co Electric discharge apparatus

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2512482A (en) * 1946-07-06 1950-06-20 Weltronic Co Electrical control apparatus
DE1057263B (de) * 1957-03-04 1959-05-14 H A Schlatter A G Elektr Schwe Steuerschaltung fuer Gasentladungsroehren beim Widerstandsschweissen

Also Published As

Publication number Publication date
BE443043A (de)
CH222640A (fr) 1942-07-31
FR938746A (fr) 1948-10-22
GB546738A (en) 1942-07-28
NL69616C (de)
DE949424C (de) 1956-09-20

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