GB496926A - Circuit arrangements for telegraph systems - Google Patents
Circuit arrangements for telegraph systemsInfo
- Publication number
- GB496926A GB496926A GB14537/38A GB1453738A GB496926A GB 496926 A GB496926 A GB 496926A GB 14537/38 A GB14537/38 A GB 14537/38A GB 1453738 A GB1453738 A GB 1453738A GB 496926 A GB496926 A GB 496926A
- Authority
- GB
- United Kingdom
- Prior art keywords
- subscriber
- contact
- time
- dial
- circuit arrangements
- 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
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L12/00—Data switching networks
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Interface Circuits In Exchanges (AREA)
Abstract
496,926. Telegraph exchange systems. LORENZ AKT.-GES., C. May 16, 1938, No. 14537. Convention date, May 15, 1937. [Class 40 (iii)] A switch AB at a subscriber's station releases a selecting dial a certain time after the subscriber has pressed a calling key AT. The interval of time is at least equal to the maximum time of transit of the pre-selector at the automatic exchange. The retarded relays A, B operate in sequence from current in the subscriber's line a, b, by the reversing of contacts a<2>, a3. The contact b3 de-energizes the relay A. Closure of the contact b<2> applies voltage from the mains Ne to energize. a magnet W to release the dial and simultaneously connects up a busy lamp BL.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE205031X | 1937-05-15 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB496926A true GB496926A (en) | 1938-12-08 |
Family
ID=5785026
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB14537/38A Expired GB496926A (en) | 1937-05-15 | 1938-05-16 | Circuit arrangements for telegraph systems |
Country Status (4)
Country | Link |
---|---|
CH (1) | CH205031A (en) |
FR (1) | FR837793A (en) |
GB (1) | GB496926A (en) |
NL (1) | NL48869C (en) |
-
0
- NL NL48869D patent/NL48869C/xx active
-
1938
- 1938-05-02 CH CH205031D patent/CH205031A/en unknown
- 1938-05-10 FR FR837793D patent/FR837793A/en not_active Expired
- 1938-05-16 GB GB14537/38A patent/GB496926A/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
FR837793A (en) | 1939-02-20 |
CH205031A (en) | 1939-05-31 |
NL48869C (en) |
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