CA1177985A - Electronic terminator circuit - Google Patents

Electronic terminator circuit

Info

Publication number
CA1177985A
CA1177985A CA000408607A CA408607A CA1177985A CA 1177985 A CA1177985 A CA 1177985A CA 000408607 A CA000408607 A CA 000408607A CA 408607 A CA408607 A CA 408607A CA 1177985 A CA1177985 A CA 1177985A
Authority
CA
Canada
Prior art keywords
current
slic
circuit means
terminator
resistor
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
CA000408607A
Other languages
English (en)
French (fr)
Inventor
Don W. Zobel
Dennis L. Welty
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.)
Motorola Solutions Inc
Original Assignee
Motorola 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 Motorola Inc filed Critical Motorola Inc
Application granted granted Critical
Publication of CA1177985A publication Critical patent/CA1177985A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/38—Transceivers, i.e. devices in which transmitter and receiver form a structural unit and in which at least one part is used for functions of transmitting and receiving
    • H04B1/40—Circuits
    • H04B1/54—Circuits using the same frequency for two directions of communication
    • H04B1/58—Hybrid arrangements, i.e. arrangements for transition from single-path two-direction transmission to single-direction transmission on each of two paths or vice versa
    • 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
    • H04M19/005—Feeding arrangements without the use of line transformers

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Power Engineering (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Interface Circuits In Exchanges (AREA)
  • Devices For Supply Of Signal Current (AREA)
  • Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
CA000408607A 1981-09-24 1982-08-03 Electronic terminator circuit Expired CA1177985A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US30501281A 1981-09-24 1981-09-24
US305,012 1981-09-24

Publications (1)

Publication Number Publication Date
CA1177985A true CA1177985A (en) 1984-11-13

Family

ID=23178923

Family Applications (1)

Application Number Title Priority Date Filing Date
CA000408607A Expired CA1177985A (en) 1981-09-24 1982-08-03 Electronic terminator circuit

Country Status (4)

Country Link
EP (1) EP0089350A4 (de)
JP (1) JPS58501529A (de)
CA (1) CA1177985A (de)
WO (1) WO1983001162A1 (de)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4727574A (en) * 1985-09-24 1988-02-23 Northern Telecom Limited Subscriber line interface circuit with improved d.c. balance

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL7208148A (de) * 1972-06-15 1973-12-18
US3899646A (en) * 1974-05-28 1975-08-12 Bell Telephone Labor Inc Telephone set speech network
US4004109A (en) * 1975-05-09 1977-01-18 Boxall Frank S Hybrid circuit
US4041252A (en) * 1976-06-07 1977-08-09 North Electric Company Transformerless two-wire/four-wire hybrid with DC sourcing capability
US4203012A (en) * 1977-07-14 1980-05-13 Boxall Frank S Hybrid circuit using current mirror circuits
FR2437757A2 (fr) * 1978-06-26 1980-04-25 Trt Telecom Radio Electr Joncteur d'abonne destine a assurer un couplage en deux fils ou quatre fils avec un central telephonique
US4300023A (en) * 1979-08-13 1981-11-10 Motorola, Inc. Hybrid circuit

Also Published As

Publication number Publication date
EP0089350A1 (de) 1983-09-28
EP0089350A4 (de) 1985-06-06
JPS58501529A (ja) 1983-09-08
WO1983001162A1 (en) 1983-03-31

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Legal Events

Date Code Title Description
MKEC Expiry (correction)
MKEX Expiry