GB1031148A - Improvements in and relating to circuit arrangements for the ignition of two cross-connected ignitrons - Google Patents

Improvements in and relating to circuit arrangements for the ignition of two cross-connected ignitrons

Info

Publication number
GB1031148A
GB1031148A GB37442/64D GB3744264D GB1031148A GB 1031148 A GB1031148 A GB 1031148A GB 37442/64 D GB37442/64 D GB 37442/64D GB 3744264 D GB3744264 D GB 3744264D GB 1031148 A GB1031148 A GB 1031148A
Authority
GB
United Kingdom
Prior art keywords
transformer
thyristor
voltage
valves
ignition
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
Application number
GB37442/64D
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.)
Philips Electronics UK Ltd
Original Assignee
Philips Electronic and Associated Industries Ltd
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 Electronic and Associated Industries Ltd filed Critical Philips Electronic and Associated Industries Ltd
Publication of GB1031148A publication Critical patent/GB1031148A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J17/00—Gas-filled discharge tubes with solid cathode
    • H01J17/02—Details
    • H01J17/04—Electrodes; Screens
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K11/00—Resistance welding; Severing by resistance heating
    • B23K11/24—Electric supply or control circuits therefor
    • B23K11/248—Electric supplies using discharge tubes
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Ignition Installations For Internal Combustion Engines (AREA)
  • Control Of Electrical Variables (AREA)
  • Generation Of Surge Voltage And Current (AREA)

Abstract

1,031,148. Reverse parallel valves for controlling A.C. power. PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd. Sept. 14, 1964 [Sept. 17, 19631, No. 37442/64. Heading H2H. A pair of reverse parallel connected valves 1, 2 are controlled by a thyristor 5 connected to the centre taps of autotransformers 7, 8 as shown. Before either valve fires most of the supply voltage 4 appears across the autotransformer 7 and when the thyristor 5 is fired by a phaseshifted pulse 11 or by closure of a switch shunting these conductors half of transformer 7 is connected in parallel with half of transformer 8 through rectifier 12 or 13, thus placing the whole of the voltage of transformer 8 across the cathodes and ignition electrodes of the valves, firing whichever valve has positive voltages at both the ignition electrode and anode. Firing of either valve reduces the voltage across the transformer 7 below that of a Zener diode 6 which cuts off the thyristor 5 to prevent afterburning. The transformer 8 may be arranged to step up the voltage from transformer 7 by suitable taps. The arrangement enables a thyristor of reduced voltage rating to be used. The load 3 may be a welding transformer.
GB37442/64D 1963-09-17 1964-09-14 Improvements in and relating to circuit arrangements for the ignition of two cross-connected ignitrons Expired GB1031148A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL63298023A NL139680B (en) 1963-09-17 1963-09-17 DEVICE FOR TURNING IGNITION OF TWO ANTIPARALLEL-SWITCHED IGNITRONS.

Publications (1)

Publication Number Publication Date
GB1031148A true GB1031148A (en) 1966-05-25

Family

ID=19755051

Family Applications (1)

Application Number Title Priority Date Filing Date
GB37442/64D Expired GB1031148A (en) 1963-09-17 1964-09-14 Improvements in and relating to circuit arrangements for the ignition of two cross-connected ignitrons

Country Status (10)

Country Link
US (1) US3363168A (en)
JP (1) JPS4327016B1 (en)
AT (1) AT242241B (en)
BE (1) BE653121A (en)
CH (1) CH425947A (en)
DE (1) DE1193990B (en)
DK (1) DK117364B (en)
FR (1) FR1409604A (en)
GB (1) GB1031148A (en)
NL (2) NL139680B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3363168A (en) * 1963-09-17 1968-01-09 Philips Corp Ignition circuit for inverse-parallel connected ignitrons utilizing a single semiconductor controlled rectifier

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL298023A (en) * 1963-09-17

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3363168A (en) * 1963-09-17 1968-01-09 Philips Corp Ignition circuit for inverse-parallel connected ignitrons utilizing a single semiconductor controlled rectifier

Also Published As

Publication number Publication date
DK117364B (en) 1970-04-20
NL298023A (en)
BE653121A (en) 1965-03-15
JPS4327016B1 (en) 1968-11-20
NL139680B (en) 1973-09-17
DE1193990B (en) 1965-06-03
FR1409604A (en) 1965-08-27
CH425947A (en) 1966-12-15
US3363168A (en) 1968-01-09
AT242241B (en) 1965-09-10

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