FI42587B - - Google Patents

Info

Publication number
FI42587B
FI42587B FI1538/61A FI153861A FI42587B FI 42587 B FI42587 B FI 42587B FI 1538/61 A FI1538/61 A FI 1538/61A FI 153861 A FI153861 A FI 153861A FI 42587 B FI42587 B FI 42587B
Authority
FI
Finland
Application number
FI1538/61A
Other languages
Finnish (fi)
Inventor
H Ebel
Original Assignee
Siemens Ag
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
Priority claimed from DES70663A external-priority patent/DE1126941B/de
Application filed by Siemens Ag filed Critical Siemens Ag
Application granted granted Critical
Publication of FI42587B publication Critical patent/FI42587B/fi

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q3/00—Selecting arrangements
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B3/00—Line transmission systems
    • H04B3/02—Details
    • H04B3/40—Artificial lines; Networks simulating a line of certain length
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B3/00—Line transmission systems
    • H04B3/02—Details
    • H04B3/42—Circuits for by-passing of ringing signals
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B3/00—Line transmission systems
    • H04B3/02—Details
    • H04B3/44—Arrangements for feeding power to a repeater along the transmission line
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M3/00—Automatic or semi-automatic exchanges
    • H04M3/40—Applications of speech amplifiers

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Devices For Supply Of Signal Current (AREA)
  • Direct Current Feeding And Distribution (AREA)
  • Interface Circuits In Exchanges (AREA)
  • Control Of Resistance Heating (AREA)
FI1538/61A 1960-09-30 1961-08-31 FI42587B (bg)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
DES70663A DE1126941B (de) 1960-09-30 1960-09-30 Schaltungsanordnung zum Ausregeln des Daempfungsunterschiedes verschieden langer Fernmeldeleitungen
DES80117A DE1288162B (de) 1960-09-30 1962-06-28 Schaltungsanordnung zum Ausregeln des Daempfungsunterschiedes verschieden langer Fernmeldeleitungen
DES80116A DE1288161B (de) 1960-09-30 1962-06-28 Schaltungsanordnung zum Ausregeln des Daempfungsunterschiedes verschieden langer Fernmeldeleitungen
DES81669A DE1261898B (de) 1960-09-30 1962-09-26 Schaltungsanordnung zum Ausregeln des Daempfungsunterschiedes verschieden langer Fernmeldeleitungen
DES84671A DE1256719B (de) 1960-09-30 1963-04-11 Schaltungsanordnung zum Ausregeln des Daempfungsunterschiedes verschieden langer Fernmeldeleitungen

Publications (1)

Publication Number Publication Date
FI42587B true FI42587B (bg) 1970-06-01

Family

ID=27512275

Family Applications (1)

Application Number Title Priority Date Filing Date
FI1538/61A FI42587B (bg) 1960-09-30 1961-08-31

Country Status (5)

Country Link
US (1) US3187104A (bg)
CH (1) CH389035A (bg)
DE (4) DE1288161B (bg)
FI (1) FI42587B (bg)
NL (1) NL269763A (bg)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3339027A (en) * 1964-10-07 1967-08-29 Bell Telephone Labor Inc Telephone line range extension circuitry
US3504127A (en) * 1967-05-02 1970-03-31 Bell Telephone Labor Inc Direct current compensation circuit for transformer couplings
US3621143A (en) * 1969-04-04 1971-11-16 Lorain Prod Corp Current-controlled voltage booster for telephone systems
US3914560A (en) * 1971-10-13 1975-10-21 Superior Continental Corp Self-adjusting repeater for voice frequency telephone transmission systems
US4176255A (en) * 1978-03-24 1979-11-27 Bell Telephone Laboratories, Incorporated Adjustable impedance battery feed circuit
NL7805416A (nl) * 1978-05-19 1979-11-21 Philips Nv Zelf-instellende vorkschakeling.
GB2041700B (en) * 1978-12-30 1982-12-08 Plessey Co Ltd Balance on 2-4 wire hybrid circuits
US4791668A (en) * 1987-09-23 1988-12-13 Northern Telecom Limited Selectable impedance line interface circuit
DE4139610C2 (de) * 1991-11-30 1996-07-11 Siemens Nixdorf Inf Syst Verfahren zum Einstellen von Signalübertragungsparamtern von Teilnehmeranschlußschaltungen

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR748843A (fr) * 1932-01-20 1933-07-10 Materiel Telephonique Perfectionnements apportés aux systèmes électriques de transmission de signaux par courants alternatifs
US2732436A (en) * 1947-12-22 1956-01-24 Frequency in cycles per second
DE1069213B (bg) * 1955-09-17 1959-11-19
US3035122A (en) * 1958-09-30 1962-05-15 Gen Dynamics Corp Constant current line circuitt for loop telephone lines

Also Published As

Publication number Publication date
US3187104A (en) 1965-06-01
CH389035A (de) 1965-03-15
DE1261898B (de) 1968-02-29
DE1256719B (de) 1967-12-21
NL269763A (bg)
DE1288161B (de) 1969-01-30
DE1288162B (de) 1969-01-30

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