GB420587A - Improvements in and relating to the prevention of sparking in the control of electric circuits - Google Patents

Improvements in and relating to the prevention of sparking in the control of electric circuits

Info

Publication number
GB420587A
GB420587A GB2325534A GB2325534A GB420587A GB 420587 A GB420587 A GB 420587A GB 2325534 A GB2325534 A GB 2325534A GB 2325534 A GB2325534 A GB 2325534A GB 420587 A GB420587 A GB 420587A
Authority
GB
United Kingdom
Prior art keywords
circuit
contacts
sparking
condenser
aug
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
GB2325534A
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 GB420587A publication Critical patent/GB420587A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
    • H01H9/54—Circuit arrangements not adapted to a particular application of the switching device and for which no provision exists elsewhere

Landscapes

  • Control Of Eletrric Generators (AREA)
  • Generation Of Surge Voltage And Current (AREA)

Abstract

420,587. Sparking - preventing in switches. BRITISH THOMSON-HOUSTON CO., Ltd., Crown House, Aldwych, London. Aug. 11, 1934, No. 23255. Convention date, Aug. 12, 1933. [Class 38 (v)] In a D.C. circuit 1 having make and break contacts 2, 3 therein and a condenser 4 connected across the contacts to reduce sparking on breaking the circuit, the condenser is prevented from discharging across the contacts, when remaking the circuit, by means of a unidirectional conducting device 5. An impedance, in the form of a high ohmic resistance 6, is preferably shunted across the condenser. In the arrangement shown in Fig. 2, the contacts 2, 3 form part of a vibratory regulator 10 for keeping constant the voltage of a dynamo-electric machine 7 having a shunt winding 8 in series with the resistance 6 which is alternately cut in and out of circuit by the regulator 10.
GB2325534A 1933-08-12 1934-08-11 Improvements in and relating to the prevention of sparking in the control of electric circuits Expired GB420587A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US68488633 US2011395A (en) 1933-08-12 1933-08-12 Electric circuit

Publications (1)

Publication Number Publication Date
GB420587A true GB420587A (en) 1934-12-04

Family

ID=24749975

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2325534A Expired GB420587A (en) 1933-08-12 1934-08-11 Improvements in and relating to the prevention of sparking in the control of electric circuits

Country Status (2)

Country Link
US (1) US2011395A (en)
GB (1) GB420587A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1040104B (en) * 1955-11-15 1958-10-02 Deutsche Bundespost Arrangement for spark extinction on contacts with high switching frequency

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2899625A (en) * 1959-08-11 Converter system having load energy
US2619628A (en) * 1945-03-27 1952-11-25 Kesselring Fritz Converter with electromagnetic switches
US2476842A (en) * 1945-04-03 1949-07-19 Bell Telephone Labor Inc Contact protective network
US2545989A (en) * 1945-09-07 1951-03-20 Westinghouse Electric Corp Electronic control
US2476843A (en) * 1946-02-07 1949-07-19 Beil Telephone Lab Inc Contact protection network
US2530939A (en) * 1947-09-27 1950-11-21 Westinghouse Electric Corp Circuit interrupter with arc extinguishing shunt
US2756380A (en) * 1951-11-20 1956-07-24 Ite Circuit Breaker Ltd Electromagnetic switch
FR1193942A (en) * 1957-04-12 1959-11-05
GB957721A (en) * 1959-07-03 1964-05-13 Claesson Harry Elias Device for reducing erosion in electric contacts
US3011093A (en) * 1959-12-18 1961-11-28 Westinghouse Electric Corp Surge suppressor for welder
US3159781A (en) * 1961-07-21 1964-12-01 Motorola Inc Alternator regulator circuit including an electromagnetic relay having a single contact
GB1064731A (en) * 1962-12-05 1967-04-05 Lucas Industries Ltd Spark ignition systems for internal combustion engines
US3339054A (en) * 1964-04-20 1967-08-29 Gen Motors Corp Electronic oven
US8619395B2 (en) 2010-03-12 2013-12-31 Arc Suppression Technologies, Llc Two terminal arc suppressor

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1040104B (en) * 1955-11-15 1958-10-02 Deutsche Bundespost Arrangement for spark extinction on contacts with high switching frequency

Also Published As

Publication number Publication date
US2011395A (en) 1935-08-13

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