GB1134916A - Improvements in or relating to electric circuit arrangements for use in telecommunications exchange systems - Google Patents
Improvements in or relating to electric circuit arrangements for use in telecommunications exchange systemsInfo
- Publication number
- GB1134916A GB1134916A GB1959567A GB1959567A GB1134916A GB 1134916 A GB1134916 A GB 1134916A GB 1959567 A GB1959567 A GB 1959567A GB 1959567 A GB1959567 A GB 1959567A GB 1134916 A GB1134916 A GB 1134916A
- Authority
- GB
- United Kingdom
- Prior art keywords
- state
- relay
- isolating
- potential difference
- threshold level
- 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
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q3/00—Selecting arrangements
- H04Q3/0008—Selecting arrangements using relay selectors in the switching stages
- H04Q3/0012—Selecting arrangements using relay selectors in the switching stages in which the relays are arranged in a matrix configuration
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Interface Circuits In Exchanges (AREA)
Abstract
1,134,916. Automatic exchange systems. SIEMENS A.G. 28 April, 1967 [29 April, 1966], No. 19595/67. Heading H4K. In a cross-point array in which bi-stable relays individually set to one state by applying a potential difference to the corresponding row and column conductors, and set to the other state by reversing this potential, isolating devices having a low resistance in one direction of conduction and a non-linear resistance in the other direction are connected in series with the relays. The resistance in the non-linear direction is of high value below a predetermined applied (e.g. threshold) voltage and of low value above it. Each isolating device may be a Zener diode or a rectifying element connected in parallel with a varistor, glow-discharge tube or four-layer diode. For switching selected relays to the first state selecting potentials below the threshold level are employed and the isolating devices function as normal diodes. To switch a relay to its other state a reverse potential difference above the threshold level is applied to the associated row and column conductors. The corresponding isolating device breaks down switching that relay to its other state. Paths in parallel with this relay and its isolating device and which connect to the energized row and column conductors pass through at least two isolating devices in series thus provided the applied potential difference is less than twice the threshold level only the selected relay is switched. Specification 1,058,508 is referred to.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE1966S0103518 DE1279108B (en) | 1966-04-29 | 1966-04-29 | Circuit arrangement for telecommunications systems, in particular telephone exchanges, with switch panels constructed like a cross field |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1134916A true GB1134916A (en) | 1968-11-27 |
Family
ID=7525243
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1959567A Expired GB1134916A (en) | 1966-04-29 | 1967-04-28 | Improvements in or relating to electric circuit arrangements for use in telecommunications exchange systems |
Country Status (5)
| Country | Link |
|---|---|
| BE (1) | BE697757A (en) |
| DE (1) | DE1279108B (en) |
| GB (1) | GB1134916A (en) |
| NL (1) | NL6702065A (en) |
| SE (1) | SE309435B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107300426B (en) * | 2017-06-23 | 2019-06-25 | 北京金风科创风电设备有限公司 | Temperature detection system and temperature detection method |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1083340B (en) * | 1955-09-20 | 1960-06-15 | Sven Arnold Karlsson Dipl Ing | Circuit arrangement for establishing connections in telecommunication systems, especially telephone systems |
-
1966
- 1966-04-29 DE DE1966S0103518 patent/DE1279108B/en not_active Withdrawn
-
1967
- 1967-02-10 NL NL6702065A patent/NL6702065A/xx unknown
- 1967-04-26 SE SE592667A patent/SE309435B/xx unknown
- 1967-04-28 GB GB1959567A patent/GB1134916A/en not_active Expired
- 1967-04-28 BE BE697757D patent/BE697757A/xx unknown
Also Published As
| Publication number | Publication date |
|---|---|
| BE697757A (en) | 1967-10-30 |
| NL6702065A (en) | 1967-10-30 |
| SE309435B (en) | 1969-03-24 |
| DE1279108B (en) | 1968-10-03 |
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