GB957721A - Device for reducing erosion in electric contacts - Google Patents
Device for reducing erosion in electric contactsInfo
- Publication number
- GB957721A GB957721A GB23312/60A GB2331260A GB957721A GB 957721 A GB957721 A GB 957721A GB 23312/60 A GB23312/60 A GB 23312/60A GB 2331260 A GB2331260 A GB 2331260A GB 957721 A GB957721 A GB 957721A
- Authority
- GB
- United Kingdom
- Prior art keywords
- line
- contacts
- inductance
- arcing
- load
- 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
957,721. Arcing-preventing. H. E. CLAESSON, and K. E. JARNBRINK. July 4, 1960 [July 3, 1959], No. 23312/60. Heading H2B. In a D.C. circuit having contacts K1, K2 controlling the operation of an inductive load such as a relay R1 over a line L which may be of considerable length, an inductance Z 1 is connected in series with the line L and load R1 to prevent the discharge current caused by the capacitance (indicated at C1 and C2) of the line resulting in arcing at the contacts when they are closed. To prevent or reduce arcing when the contacts are opened, a rectifier L1 in parallel with a resistor r2 and in series with a capacitor C5 is connected across the inductance Z1, line L and load R1. The rectifier L1, capacitor C5, resistor r2 and the inductance Z1 may be assembled in a self-contained unit which may be attached to the contact K1, Fig. 3 (not shown).
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SE630159 | 1959-07-03 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB957721A true GB957721A (en) | 1964-05-13 |
Family
ID=20268340
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB23312/60A Expired GB957721A (en) | 1959-07-03 | 1960-07-04 | Device for reducing erosion in electric contacts |
Country Status (3)
| Country | Link |
|---|---|
| US (1) | US3283211A (en) |
| DE (1) | DE1269254B (en) |
| GB (1) | GB957721A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0090336A2 (en) * | 1982-03-29 | 1983-10-05 | Siemens Aktiengesellschaft | Circuit arrangements for discharging capacitors by means of a relay |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3366841A (en) * | 1964-12-08 | 1968-01-30 | Asea Ab | Arrangement for facilitating current interruptions during short line faults |
| US3431466A (en) * | 1965-07-30 | 1969-03-04 | Toshio Watanabe | Arc-suppressing circuit for switching devices in alternating current circuit |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1966077A (en) * | 1931-02-17 | 1934-07-10 | Radio Patents Corp | Surge absorbing apparatus |
| US2011395A (en) * | 1933-08-12 | 1935-08-13 | Gen Electric | Electric circuit |
| US2199909A (en) * | 1936-10-29 | 1940-05-07 | Bell Telephone Labor Inc | Nonsparking electromagnetic signaling and switching device |
| DE767729C (en) * | 1940-05-23 | 1953-04-16 | Siemens Schuckertwerke A G | Arrangement for the protection of switching points, in particular relay contacts |
| US2531220A (en) * | 1947-10-17 | 1950-11-21 | Kaplan Jack | Flash lamp |
| US2758254A (en) * | 1951-12-21 | 1956-08-07 | Int Standard Electric Corp | Arrangement to avoid sparking in inductive direct-current circuits |
| US2802149A (en) * | 1953-12-30 | 1957-08-06 | Bell Telephone Labor Inc | Contact protection circuits |
| DE1043407B (en) * | 1957-09-11 | 1958-11-13 | Siemens Ag | Circuit arrangement for cleaning the contact segments of a dialer for telecommunications systems |
-
1960
- 1960-07-04 DE DEP1269A patent/DE1269254B/en active Pending
- 1960-07-04 GB GB23312/60A patent/GB957721A/en not_active Expired
-
1965
- 1965-09-20 US US493609A patent/US3283211A/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0090336A2 (en) * | 1982-03-29 | 1983-10-05 | Siemens Aktiengesellschaft | Circuit arrangements for discharging capacitors by means of a relay |
| EP0090336A3 (en) * | 1982-03-29 | 1986-03-19 | Siemens Aktiengesellschaft | Circuit arrangements for discharging capacitors by means of a relay |
Also Published As
| Publication number | Publication date |
|---|---|
| DE1269254B (en) | 1968-05-30 |
| US3283211A (en) | 1966-11-01 |
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