GB1452158A - Telegraphy subsribers dc keying line circuits - Google Patents

Telegraphy subsribers dc keying line circuits

Info

Publication number
GB1452158A
GB1452158A GB681374A GB681374A GB1452158A GB 1452158 A GB1452158 A GB 1452158A GB 681374 A GB681374 A GB 681374A GB 681374 A GB681374 A GB 681374A GB 1452158 A GB1452158 A GB 1452158A
Authority
GB
United Kingdom
Prior art keywords
circuit
exchange
current
voltage
telegraphy
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
Application number
GB681374A
Other languages
English (en)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Siemens Corp
Original Assignee
Siemens Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Siemens Corp filed Critical Siemens Corp
Publication of GB1452158A publication Critical patent/GB1452158A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L25/00—Baseband systems
    • H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
    • H04L25/12—Compensating for variations in line impedance

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Interface Circuits In Exchanges (AREA)
  • Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
  • Radio Relay Systems (AREA)
GB681374A 1973-03-05 1974-02-14 Telegraphy subsribers dc keying line circuits Expired GB1452158A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2310940A DE2310940C3 (de) 1973-03-05 1973-03-05 Schaltungsanordnung zum Anschließen von Telegrafieteilnehmern an Wechselstrom-Übertragungseinrichtungen und Vermittlungsanlagen

Publications (1)

Publication Number Publication Date
GB1452158A true GB1452158A (en) 1976-10-13

Family

ID=5873867

Family Applications (1)

Application Number Title Priority Date Filing Date
GB681374A Expired GB1452158A (en) 1973-03-05 1974-02-14 Telegraphy subsribers dc keying line circuits

Country Status (12)

Country Link
AT (1) AT342120B (enrdf_load_stackoverflow)
BE (1) BE811886A (enrdf_load_stackoverflow)
BR (1) BR7401553D0 (enrdf_load_stackoverflow)
CH (1) CH586981A5 (enrdf_load_stackoverflow)
DE (1) DE2310940C3 (enrdf_load_stackoverflow)
FI (1) FI60330C (enrdf_load_stackoverflow)
FR (1) FR2220939B1 (enrdf_load_stackoverflow)
GB (1) GB1452158A (enrdf_load_stackoverflow)
IT (1) IT1011028B (enrdf_load_stackoverflow)
LU (1) LU69544A1 (enrdf_load_stackoverflow)
NL (1) NL7402912A (enrdf_load_stackoverflow)
NO (1) NO140318C (enrdf_load_stackoverflow)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4329542A (en) 1979-06-26 1982-05-11 Siemens Aktiengesellschaft Circuit arrangement for an electronic d.c. telegraph transmitter

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL7704703A (nl) * 1977-04-29 1978-10-31 Philips Nv Electronische gelijkstroomtelegrafiezender.
DE2833732C2 (de) * 1978-08-01 1981-12-03 Siemens Ag, 1000 Berlin Und 8000 Muenchen Schaltungsanordnung zur Aussendung von Gleichstromtelegrafiezeichen
NL181896C (nl) * 1979-06-05 1987-11-16 Philips Nv Elektronische zender voor gelijkstroomtelegrafietransmissie.

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2035379C3 (de) * 1970-07-16 1975-10-09 Siemens Ag Schaltungsanordnung zum Einstellen des Linienstromes in Telegrafieteilnehmer-Anschlußschaltungen einer Vermittlungsanlage
FR2146091B1 (enrdf_load_stackoverflow) * 1971-07-16 1976-05-28 Constr Telephoniques
GB1424525A (en) * 1972-05-11 1976-02-11 Elliott Brothers London Ltd Data transmission system

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4329542A (en) 1979-06-26 1982-05-11 Siemens Aktiengesellschaft Circuit arrangement for an electronic d.c. telegraph transmitter

Also Published As

Publication number Publication date
FR2220939B1 (enrdf_load_stackoverflow) 1977-09-23
LU69544A1 (enrdf_load_stackoverflow) 1974-10-09
NO740433L (no) 1974-09-06
FI60330C (fi) 1981-12-10
NO140318C (no) 1979-08-08
FI60330B (fi) 1981-08-31
DE2310940C3 (de) 1979-05-03
AT342120B (de) 1978-03-10
ATA74774A (de) 1977-07-15
DE2310940A1 (de) 1974-09-19
FR2220939A1 (enrdf_load_stackoverflow) 1974-10-04
NO140318B (no) 1979-04-30
NL7402912A (enrdf_load_stackoverflow) 1974-09-09
BR7401553D0 (pt) 1974-11-19
BE811886A (fr) 1974-09-05
IT1011028B (it) 1977-01-20
DE2310940B2 (de) 1978-08-10
CH586981A5 (enrdf_load_stackoverflow) 1977-04-15

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee