GB448833A - Improvements in and relating to circuits for electric discharge devices - Google Patents

Improvements in and relating to circuits for electric discharge devices

Info

Publication number
GB448833A
GB448833A GB570/36A GB57036A GB448833A GB 448833 A GB448833 A GB 448833A GB 570/36 A GB570/36 A GB 570/36A GB 57036 A GB57036 A GB 57036A GB 448833 A GB448833 A GB 448833A
Authority
GB
United Kingdom
Prior art keywords
tube
condenser
resistance
jan
charged
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
GB570/36A
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.)
British Thomson Houston Co Ltd
Original Assignee
British Thomson Houston Co 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 British Thomson Houston Co Ltd filed Critical British Thomson Houston Co Ltd
Publication of GB448833A publication Critical patent/GB448833A/en
Expired legal-status Critical Current

Links

Classifications

    • 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

Abstract

448,833. Supply systems for resistance welding. BRITISH THOMSON-HOUSTON CO., Ltd., Crown House, Aldwych, London. Jan. 7, 1936, No. 570. Convention date, Jan. 7, 1935. [Class 38 (iv)] [See also Group XL] Switching systems. An arrangement for electric spot welding comprises a pair of gas- or vapour discharge tubes 1, 2. opposedly connected in parallel, the ignition of the tube 2 being effected in dependence on the energization period of the tube 1 by means of a condenser 6 shunted by resistance 7 and located in the anode-current circuit of both tubes. The condenser is charged by a current impulse passing through tube 1 and when its voltage rises above that of the gridbias source 9 to which it is opposed the tube 2 is energized. The charge leaks away across resistance 7 to prepare for the next cycle. The time-controller 11 may be a rotating contact or an electric timing circuit and phase-displacer. The condenser 6 is charged through the dry-plate rectifier 8, in parallel with the primary of the welding transformer 5.
GB570/36A 1935-01-07 1936-01-07 Improvements in and relating to circuits for electric discharge devices Expired GB448833A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE448833X 1935-01-07

Publications (1)

Publication Number Publication Date
GB448833A true GB448833A (en) 1936-06-16

Family

ID=6538184

Family Applications (1)

Application Number Title Priority Date Filing Date
GB570/36A Expired GB448833A (en) 1935-01-07 1936-01-07 Improvements in and relating to circuits for electric discharge devices

Country Status (1)

Country Link
GB (1) GB448833A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2564347A (en) * 1946-03-28 1951-08-14 Welding Research Inc Electronic control circuit
US2761967A (en) * 1952-11-10 1956-09-04 Robotron Corp Timing relay
US2848604A (en) * 1953-06-23 1958-08-19 Square D Co Welder control

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2564347A (en) * 1946-03-28 1951-08-14 Welding Research Inc Electronic control circuit
US2761967A (en) * 1952-11-10 1956-09-04 Robotron Corp Timing relay
US2848604A (en) * 1953-06-23 1958-08-19 Square D Co Welder control

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