GB663898A - Improvements relating to methods of suppressing arcing at contacts breaking an inductive circuit - Google Patents
Improvements relating to methods of suppressing arcing at contacts breaking an inductive circuitInfo
- Publication number
- GB663898A GB663898A GB1453849A GB1453849A GB663898A GB 663898 A GB663898 A GB 663898A GB 1453849 A GB1453849 A GB 1453849A GB 1453849 A GB1453849 A GB 1453849A GB 663898 A GB663898 A GB 663898A
- Authority
- GB
- United Kingdom
- Prior art keywords
- source
- biassing
- rectifier
- voltage
- methods
- 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
- Emergency Protection Circuit Devices (AREA)
Abstract
663,898. Sparking preventing in switches. WESTINGHOUSE BRAKE & SIGNAL CO. Ltd., and WALKER, A. H. B. May 2, 1950. [May 31, 1949] No. 14538/49. Class 38 (v). Arcing at a switch 5 controlling an inductivecircuit 1 is suppressed by means of a rectifier 8 subjected to a reverse biassing voltage and connected so that surge energy due to the breaking of the circuit is fed through the rectifier to the biassing source and is absorbed thereby whenever the surge voltage exceeds a predetermined value. In Fig. 1, the source 6, 7 supplying the circuit 1 is also the biassing source. On opening the switch 5, a voltage is induced in the winding or tapped portion 2, 3, which, when it exceeds the supply voltage, sends current through the rectifier 8 and source 6, 7. In Fig. 4, a separate biassing source 10 is used and connected in series with the rectifier across part of the inductance 1. In Fig. 5, the biassing source is a condenser 12. This arrangement is for contacts which operate a number of times in quick succession, which causes a voltage to be built up in the condenser. In Fig. 6, which is suitable for A.C. or reversible D.C. the biassing source is a battery 10 and is connected to a full wave rectifier 14 connected to a coil 13 coupled to the inductance 1.
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
NL153566D NL153566C (en) | 1949-05-31 | ||
GB1453849A GB663898A (en) | 1949-05-31 | 1949-05-31 | Improvements relating to methods of suppressing arcing at contacts breaking an inductive circuit |
DEW2016A DE825569C (en) | 1949-05-31 | 1950-05-11 | Device for suppressing arcing in the event of a contact |
US265681A US2637769A (en) | 1949-05-31 | 1951-12-14 | Means for suppressing arcing at contacts breaking a direct current inductive circuit |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB1453849A GB663898A (en) | 1949-05-31 | 1949-05-31 | Improvements relating to methods of suppressing arcing at contacts breaking an inductive circuit |
Publications (1)
Publication Number | Publication Date |
---|---|
GB663898A true GB663898A (en) | 1951-12-27 |
Family
ID=10043004
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB1453849A Expired GB663898A (en) | 1949-05-31 | 1949-05-31 | Improvements relating to methods of suppressing arcing at contacts breaking an inductive circuit |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB663898A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1160059B (en) * | 1957-04-12 | 1963-12-27 | American Mach & Foundry | Arrangement for suppressing arcs |
-
1949
- 1949-05-31 GB GB1453849A patent/GB663898A/en not_active Expired
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1160059B (en) * | 1957-04-12 | 1963-12-27 | American Mach & Foundry | Arrangement for suppressing arcs |
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