IT1081100B - Dipolo elettronico per chiudere in doppino una linea telefonica - Google Patents

Dipolo elettronico per chiudere in doppino una linea telefonica

Info

Publication number
IT1081100B
IT1081100B IT24286/76A IT2428676A IT1081100B IT 1081100 B IT1081100 B IT 1081100B IT 24286/76 A IT24286/76 A IT 24286/76A IT 2428676 A IT2428676 A IT 2428676A IT 1081100 B IT1081100 B IT 1081100B
Authority
IT
Italy
Prior art keywords
double
close
telephone line
electronic dipole
dipole
Prior art date
Application number
IT24286/76A
Other languages
English (en)
Original Assignee
Int Standard Electric 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 Int Standard Electric Corp filed Critical Int Standard Electric Corp
Application granted granted Critical
Publication of IT1081100B publication Critical patent/IT1081100B/it

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M7/00—Arrangements for interconnection between switching centres
    • H04M7/0096—Trunk circuits

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Interface Circuits In Exchanges (AREA)
IT24286/76A 1975-06-27 1976-06-15 Dipolo elettronico per chiudere in doppino una linea telefonica IT1081100B (it)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7520202A FR2315811A1 (fr) 1975-06-27 1975-06-27 Dipole electronique pour le bouclage d'une ligne telephonique

Publications (1)

Publication Number Publication Date
IT1081100B true IT1081100B (it) 1985-05-16

Family

ID=9157162

Family Applications (1)

Application Number Title Priority Date Filing Date
IT24286/76A IT1081100B (it) 1975-06-27 1976-06-15 Dipolo elettronico per chiudere in doppino una linea telefonica

Country Status (7)

Country Link
US (1) US4037120A (it)
AU (1) AU500658B2 (it)
BE (1) BE843385A (it)
DE (1) DE2628849A1 (it)
FR (1) FR2315811A1 (it)
GB (1) GB1517429A (it)
IT (1) IT1081100B (it)

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA1123131A (en) * 1978-02-28 1982-05-04 Michael C.J. Cowpland Transformerless trunk circuit
US4203006A (en) * 1978-04-20 1980-05-13 Prentice Corporation Direct access coupler
CA1136783A (en) * 1980-09-23 1982-11-30 Guy J. Chaput Telephone circuit
US4414502A (en) * 1981-07-20 1983-11-08 Advanced Micro Devices, Inc. Current source circuit
AU579750B2 (en) * 1982-03-24 1988-12-08 Alcatel Australia Limited Telephone power derivation circuit
FR2530105B1 (fr) * 1982-07-07 1985-07-05 Constr Telephoniques Circuit de boucle pour ligne telephonique
NL8204377A (nl) * 1982-11-12 1984-06-01 Philips Nv Abonneecircuit voor een telefoonnet.
US4574233A (en) * 1984-03-30 1986-03-04 Tektronix, Inc. High impedance current source
DE3629937A1 (de) * 1986-09-03 1988-03-10 Standard Elektrik Lorenz Ag Schaltungsanordnung mit einer elektronischen drossel
DE3629938A1 (de) * 1986-09-03 1988-03-10 Standard Elektrik Lorenz Ag Schaltungsanordnung mit einer elektronischen drossel
US5121049A (en) * 1990-03-30 1992-06-09 Texas Instruments Incorporated Voltage reference having steep temperature coefficient and method of operation
US5134310A (en) * 1991-01-23 1992-07-28 Ramtron Corporation Current supply circuit for driving high capacitance load in an integrated circuit
US5315230A (en) * 1992-09-03 1994-05-24 United Memories, Inc. Temperature compensated voltage reference for low and wide voltage ranges
US6531925B2 (en) * 2001-07-17 2003-03-11 David C. Scott Heterojunction bipolar transistor optoelectronic transimpedance amplifier using the first transistor as an optical detector

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3576452A (en) * 1968-05-28 1971-04-27 Motorola Inc Photodiode preamplifier circuit for a card reader system
US3942046A (en) * 1970-07-24 1976-03-02 Rca Corporation Low output impedance voltage divider network

Also Published As

Publication number Publication date
FR2315811A1 (fr) 1977-01-21
US4037120A (en) 1977-07-19
GB1517429A (en) 1978-07-12
BE843385A (fr) 1976-12-27
AU1499276A (en) 1977-12-22
AU500658B2 (en) 1979-05-31
FR2315811B1 (it) 1981-06-19
DE2628849A1 (de) 1977-01-13

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