GB1005753A - A circuit arrangement for the operation of electro-magnetic switching matrices in telephone systems - Google Patents
A circuit arrangement for the operation of electro-magnetic switching matrices in telephone systemsInfo
- Publication number
- GB1005753A GB1005753A GB4209461A GB4209461A GB1005753A GB 1005753 A GB1005753 A GB 1005753A GB 4209461 A GB4209461 A GB 4209461A GB 4209461 A GB4209461 A GB 4209461A GB 1005753 A GB1005753 A GB 1005753A
- Authority
- GB
- United Kingdom
- Prior art keywords
- transistors
- electro
- circuit arrangement
- telephone systems
- magnetic switching
- 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)
- Use Of Switch Circuits For Exchanges And Methods Of Control Of Multiplex Exchanges (AREA)
Abstract
1,005,753. Automatic exchange systems. TELEFUNKEN PATENTVERWERTUNGS G.m.b.H. Nov. 24, 1961 [Dec. 14, 1960], No. 42094/61. Heading H4K. An arrangement for interconnecting a number of subscriber's lines and a small number of exchange lines, as in a concentrator system, comprises an electromagnetic cross-point switch for each exchange line, represented by relays I, II, the magnets being controlled by transistors x 1 , x 2 . . . y 1 , y 2 . . . which are common respectively to the columns and rows of the switches. The transistors x 1 , x 2 . . . are preferably of PNP-type while y 1 , y 2 . . . are preferably of NPN-type, and the latter may, if necessary, be controlled through further transistors z 1 , z 2 . . . acting as invertors. The armatures are released upon brief excitation of the controlling magnets and are retained until re-set by a common electromagnet. Specification 891,873 is referred to.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DET19431A DE1128478B (en) | 1960-12-14 | 1960-12-14 | Circuit arrangement for activating the coupling points of electromagnetically controllable coupling fields with adhesive properties in telephone exchanges with apron devices, in particular with dialing star switches |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1005753A true GB1005753A (en) | 1965-09-29 |
Family
ID=7549315
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB4209461A Expired GB1005753A (en) | 1960-12-14 | 1961-11-24 | A circuit arrangement for the operation of electro-magnetic switching matrices in telephone systems |
Country Status (3)
Country | Link |
---|---|
CH (1) | CH387708A (en) |
DE (1) | DE1128478B (en) |
GB (1) | GB1005753A (en) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1255730B (en) * | 1965-11-17 | 1967-12-07 | Standard Elektrik Lorenz Ag | Circuit arrangement for a multi-stage regular coupling arrangement |
DE1187275B (en) * | 1963-11-02 | 1965-02-18 | Telefunken Patent | Circuit arrangement for activating the individually electromagnetically controllable coupling elements with adhesive properties of a multiple coordinate switch in telecommunication systems, in particular telephone dialing systems |
DE1296214B (en) * | 1967-02-27 | 1969-05-29 | Siemens Ag | Circuit arrangement for telecommunications systems, in particular telephone exchanges with multi-stage coupling devices |
-
1960
- 1960-12-14 DE DET19431A patent/DE1128478B/en active Pending
-
1961
- 1961-11-07 CH CH1290661A patent/CH387708A/en unknown
- 1961-11-24 GB GB4209461A patent/GB1005753A/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
CH387708A (en) | 1965-02-15 |
DE1128478B (en) | 1962-04-26 |
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