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 circuitsInfo
- 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
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.
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)
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)
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 |
-
1933
- 1933-08-12 US US68488633 patent/US2011395A/en not_active Expired - Lifetime
-
1934
- 1934-08-11 GB GB2325534A patent/GB420587A/en not_active Expired
Cited By (1)
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 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
GB420587A (en) | Improvements in and relating to the prevention of sparking in the control of electric circuits | |
ES346283A1 (en) | Improvements in or relating to electronic overload protection circuits | |
GB529558A (en) | Improvements in and relating to electrical ignition apparatus | |
GB474031A (en) | Improvements relating to electric arc converters | |
GB548092A (en) | Improvements relating to the reduction of sparking at contacts in making and breaking an electric circuit | |
SU907806A1 (en) | Non-volatile flip-flop | |
GB542853A (en) | Improvements in circuit arrangements for operating electric discharge lamps | |
GB443341A (en) | Improvements in or relating to automatic electric arc welding systems | |
GB438719A (en) | Improvements in or relating to frequency changers using electric discharge devices | |
GB541826A (en) | Improvements in the control of electric motors | |
GB462043A (en) | Improvements in and relating to starting devices employing self-regulating resistances | |
GB213278A (en) | An instantaneous automatic governor for electrical machines | |
GB616144A (en) | Arrangement for the protection of electric contacts against the effects of sparking | |
GB521315A (en) | Improvements relating to electric arc welding | |
GB457215A (en) | Improvements in or relating to telephone circuits | |
GB441717A (en) | Improvements in or relating to methods of direct-current braking for three-phase motors | |
GB241484A (en) | Electric protective arrangements | |
GB418637A (en) | Regulating device for dynamo electric machines | |
CA222956A (en) | Electrical circuit breaker | |
GB201038A (en) | Improvements in and relating to systems of electrical distribution | |
GB557670A (en) | Improved circuits for oscillators | |
GB738522A (en) | Improvements relating to magnetron pulse generators | |
GB518621A (en) | Improvements relating to electrical remote-control or signalling systems | |
GB748716A (en) | Improved electric protective arrangement for use with capacitors | |
GB1019815A (en) | Spark quenching device |