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GB1241037A - A circuit arrangement - Google Patents

A circuit arrangement

Info

Publication number
GB1241037A
GB1241037A GB3583968A GB3583968A GB1241037A GB 1241037 A GB1241037 A GB 1241037A GB 3583968 A GB3583968 A GB 3583968A GB 3583968 A GB3583968 A GB 3583968A GB 1241037 A GB1241037 A GB 1241037A
Authority
GB
United Kingdom
Prior art keywords
amplifier
impedance
line
receive
transmit
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
GB3583968A
Inventor
Mihaly Tabor
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 Telefongyar Kft
Original Assignee
Siemens Telefongyar Kft
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 Telefongyar Kft filed Critical Siemens Telefongyar Kft
Priority to GB3583968A priority Critical patent/GB1241037A/en
Publication of GB1241037A publication Critical patent/GB1241037A/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
    • H04B—TRANSMISSION
    • H04B3/00—Line transmission systems
    • H04B3/02—Details
    • H04B3/03—Hybrid circuits

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Amplifiers (AREA)

Abstract

1,241,037. Hybrid circuits. TELEFONGYAR. 26 July, 1968, No. 35839/68. Heading H4R. In a hybrid circuit for connecting a twowire line 1 and 2 to a receive amplifier 7 and a transmit amplifier 8 the input impedance of the receive amplifier is arranged to be very low compared with the line impedance, and the output impedance of the transmit amplifier is arranged to be very high so that the line will be properly terminated by the matched impedance of the balance network 6. As shown, the receive amplifier is a common emitter amplifier having a low impedance input due to the low value potentiometer 11, while the transmit amplifier is a common base amplifier having a high output impedance.
GB3583968A 1968-07-26 1968-07-26 A circuit arrangement Expired GB1241037A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB3583968A GB1241037A (en) 1968-07-26 1968-07-26 A circuit arrangement

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3583968A GB1241037A (en) 1968-07-26 1968-07-26 A circuit arrangement

Publications (1)

Publication Number Publication Date
GB1241037A true GB1241037A (en) 1971-07-28

Family

ID=10382085

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3583968A Expired GB1241037A (en) 1968-07-26 1968-07-26 A circuit arrangement

Country Status (1)

Country Link
GB (1) GB1241037A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3019835A1 (en) * 1980-05-23 1981-12-03 Siemens AG, 1000 Berlin und 8000 München TRANSFER-FREE FORK GEAR

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3019835A1 (en) * 1980-05-23 1981-12-03 Siemens AG, 1000 Berlin und 8000 München TRANSFER-FREE FORK GEAR
DK151997B (en) * 1980-05-23 1988-01-18 Siemens Ag TRANSFORMER-FREE FORK CLUTCH

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