GB548092A - Improvements relating to the reduction of sparking at contacts in making and breaking an electric circuit - Google Patents

Improvements relating to the reduction of sparking at contacts in making and breaking an electric circuit

Info

Publication number
GB548092A
GB548092A GB665241A GB665241A GB548092A GB 548092 A GB548092 A GB 548092A GB 665241 A GB665241 A GB 665241A GB 665241 A GB665241 A GB 665241A GB 548092 A GB548092 A GB 548092A
Authority
GB
United Kingdom
Prior art keywords
contacts
sparking
breaking
reduction
condenser
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
GB665241A
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.)
Siemens Brothers and Co Ltd
Original Assignee
Siemens Brothers and 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 Siemens Brothers and Co Ltd filed Critical Siemens Brothers and Co Ltd
Priority to GB665241A priority Critical patent/GB548092A/en
Publication of GB548092A publication Critical patent/GB548092A/en
Expired legal-status Critical Current

Links

Classifications

    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01HELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H47/00Circuit arrangements not adapted to a particular application of the relay and designed to obtain desired operating characteristics or to provide energising current

Landscapes

  • Breakers (AREA)

Abstract

548,092. Sparking-preventing in switches. SIEMENS BROS. & CO., Ltd., and BARTLETT, C. J. C. May 23, 1941, No. 6652. [Class 38 (v)] Sparking at the contacts a of automatic telephone relays is prevented by arranging in shunt to the contacts, or to-the load M, a condenser K in series with a resistance R which is adapted to be short-circuited by the contacts of relay M or by contacts mr of a relay MR operated by M and to remain so short-circuited until M has been disengaged sufficiently long for the energy thereof to be absorbed by the condenser. In Fig. 2 (not shown), the contacts mr are replaced by a unidirectional conducting device which allows the load-energy to pass but prevents the condenser-discharge from passing.
GB665241A 1941-05-23 1941-05-23 Improvements relating to the reduction of sparking at contacts in making and breaking an electric circuit Expired GB548092A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB665241A GB548092A (en) 1941-05-23 1941-05-23 Improvements relating to the reduction of sparking at contacts in making and breaking an electric circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB665241A GB548092A (en) 1941-05-23 1941-05-23 Improvements relating to the reduction of sparking at contacts in making and breaking an electric circuit

Publications (1)

Publication Number Publication Date
GB548092A true GB548092A (en) 1942-09-24

Family

ID=9818340

Family Applications (1)

Application Number Title Priority Date Filing Date
GB665241A Expired GB548092A (en) 1941-05-23 1941-05-23 Improvements relating to the reduction of sparking at contacts in making and breaking an electric circuit

Country Status (1)

Country Link
GB (1) GB548092A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3614530A (en) * 1968-08-02 1971-10-19 Bbc Brown Boveri & Cie Arrangement for damping electrical oscillations on a high-voltage alternating current transmission line
US3641357A (en) * 1969-06-03 1972-02-08 Jean Louis Gratzmuller Circuit-breaking technique and device

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3614530A (en) * 1968-08-02 1971-10-19 Bbc Brown Boveri & Cie Arrangement for damping electrical oscillations on a high-voltage alternating current transmission line
US3641357A (en) * 1969-06-03 1972-02-08 Jean Louis Gratzmuller Circuit-breaking technique and device

Similar Documents

Publication Publication Date Title
GB632843A (en) Improvements relating to current limiters for direct and alternating current mains
GB420587A (en) Improvements in and relating to the prevention of sparking in the control of electric circuits
GB548092A (en) Improvements relating to the reduction of sparking at contacts in making and breaking an electric circuit
GB481054A (en) Improvements in electric controlling devices and circuits therefor
GB545982A (en) Improvements in circuits for operating electrical indicating devices
GB1254788A (en) Improvements in or relating to devices for indicating the condition of a switch
GB736934A (en) Improvements in or relating to trigger transistor circuits
GB522986A (en) Improvements in electrical relays
GB567359A (en) Improvements in and relating to electric switching devices
GB494395A (en) Improvements in and relating to current limiting devices
GB1062893A (en) Improvements relating to the synthetic testing of high voltage electric circuit-breakers
GB457215A (en) Improvements in or relating to telephone circuits
SU120529A1 (en) Device for maintaining regenerative mode during emergency shutdowns of a traction substation inverter
GB458918A (en) Improvements in or relating to electromagnetic relays operated at a low potential
JPS5484225A (en) Switching power source circuit
GB872433A (en) Improvements in or relating to bistable flip-flop circuits and relay circuit arrangements incorporating such circuits
GB914966A (en) Improvements in and relating to electromagnetic relays
GB493668A (en) Improvements in amplifying devices for use at telephone subscribers' stations
GB589454A (en) Improvements in stopper circuits
GB221316A (en) Improvements relating to relay devices for use in automatic telephone systems
GB518621A (en) Improvements relating to electrical remote-control or signalling systems
GB526758A (en) Improvements in or relating to electrical transformers
GB737910A (en) Improvements in or relating to relay chains
GB462773A (en) An improved device for the periodic opening or closing of electric circuits
GB483329A (en) Improvements in or relating to electrical signalling arrangements