JPS51131207A - Device for expanding transmission line range - Google Patents

Device for expanding transmission line range

Info

Publication number
JPS51131207A
JPS51131207A JP4565376A JP4565376A JPS51131207A JP S51131207 A JPS51131207 A JP S51131207A JP 4565376 A JP4565376 A JP 4565376A JP 4565376 A JP4565376 A JP 4565376A JP S51131207 A JPS51131207 A JP S51131207A
Authority
JP
Japan
Prior art keywords
transmission line
line range
expanding transmission
expanding
range
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.)
Pending
Application number
JP4565376A
Other languages
English (en)
Inventor
Koi Inguru Edouin
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.)
AT&T Corp
Original Assignee
Western Electric Co Inc
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 Western Electric Co Inc filed Critical Western Electric Co Inc
Publication of JPS51131207A publication Critical patent/JPS51131207A/ja
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M19/00—Current supply arrangements for telephone systems
    • H04M19/001—Current supply source at the exchanger providing current to substations
    • H04M19/006—Circuits for increasing the range of current supply source

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Interface Circuits In Exchanges (AREA)
  • Devices For Supply Of Signal Current (AREA)
JP4565376A 1975-04-25 1976-04-23 Device for expanding transmission line range Pending JPS51131207A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US05/571,868 US3992591A (en) 1975-04-25 1975-04-25 Telephone line battery boost circuit

Publications (1)

Publication Number Publication Date
JPS51131207A true JPS51131207A (en) 1976-11-15

Family

ID=24285384

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4565376A Pending JPS51131207A (en) 1975-04-25 1976-04-23 Device for expanding transmission line range

Country Status (12)

Country Link
US (1) US3992591A (ja)
JP (1) JPS51131207A (ja)
AU (1) AU497830B2 (ja)
BE (1) BE840907A (ja)
CA (1) CA1019857A (ja)
CH (1) CH600697A5 (ja)
DE (1) DE2617523A1 (ja)
ES (1) ES447270A1 (ja)
FR (1) FR2309090A1 (ja)
GB (1) GB1542148A (ja)
NL (1) NL7604366A (ja)
SE (1) SE7604096L (ja)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA1069232A (en) * 1976-04-28 1980-01-01 Frederick J. Glenn Loop extender
US4127747A (en) * 1977-09-23 1978-11-28 Northern Telecom Limited Voltage boost circuit for telephone systems
US4380688A (en) * 1981-07-13 1983-04-19 Tii Industries Inc. Telephone ringing range extender
GB2383919B (en) * 2002-01-04 2005-01-26 Fujitsu Ltd Line extender

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3781480A (en) * 1970-11-10 1973-12-25 Wescom Loop extender
US3757052A (en) * 1971-10-19 1973-09-04 Electro Dynamics & Telecom Ltd Telephone line extender with test thru capability
US3898389A (en) * 1972-10-18 1975-08-05 Communic Mfg Voltage and/or current-sensitive loop extender
US3819866A (en) * 1972-12-18 1974-06-25 Bell Telephone Labor Inc Light coupled loop current detector
US3872258A (en) * 1974-01-28 1975-03-18 Lorain Prod Corp Voltage booster circuit for telephone systems
US3906162A (en) * 1974-07-30 1975-09-16 Communic Mfg Loop extender with bypass capacitor discharge

Also Published As

Publication number Publication date
CA1019857A (en) 1977-10-25
DE2617523A1 (de) 1976-11-04
AU1318876A (en) 1977-10-27
FR2309090B1 (ja) 1981-08-07
SE7604096L (sv) 1976-10-26
CH600697A5 (ja) 1978-06-30
US3992591A (en) 1976-11-16
ES447270A1 (es) 1977-06-16
AU497830B2 (en) 1979-01-11
NL7604366A (nl) 1976-10-27
GB1542148A (en) 1979-03-14
BE840907A (fr) 1976-08-16
FR2309090A1 (fr) 1976-11-19

Similar Documents

Publication Publication Date Title
JPS5282015A (en) Multiicolor televisition transmission device
JPS51123468A (en) Hydraulic transmission device
AU501090B2 (en) Device for enlarging pipe ends
JPS51119450A (en) Clutch device
JPS5225492A (en) Diathermous device
JPS51137200A (en) Drawing device
GB1538922A (en) Uniform-load clutch device
JPS5237664A (en) Torque transmission device
JPS5211707A (en) Information transmission device
JPS5229082A (en) Transshipping device
JPS51150085A (en) Gassinsulated transmission line
JPS51150680A (en) Gassinsulated transmission lines
JPS5232464A (en) Static hydraulic transmission device
JPS5235591A (en) Xxray device
JPS5277353A (en) Power transmission device
JPS51136106A (en) Coillwinding device
JPS5238385A (en) Accelerateefiring device for casttangling
JPS51143974A (en) Selffaligning device
JPS51131207A (en) Device for expanding transmission line range
CH609308A5 (en) Thread-braking device
GB1521736A (en) Change-speed apparatus
JPS51122988A (en) Device for inserting multiimode gannula
JPS5239061A (en) Transmission coupling device
JPS524328A (en) Device for making figures
JPS51150804A (en) Device for enlarging hole