SE8306414L - FORK CIRCUIT - Google Patents

FORK CIRCUIT

Info

Publication number
SE8306414L
SE8306414L SE8306414A SE8306414A SE8306414L SE 8306414 L SE8306414 L SE 8306414L SE 8306414 A SE8306414 A SE 8306414A SE 8306414 A SE8306414 A SE 8306414A SE 8306414 L SE8306414 L SE 8306414L
Authority
SE
Sweden
Prior art keywords
resistor
tuning
circuit
line network
order
Prior art date
Application number
SE8306414A
Other languages
Unknown language ( )
Swedish (sv)
Other versions
SE8306414D0 (en
Inventor
H R Chivers
Original Assignee
Grundy & Partners Ltd
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 Grundy & Partners Ltd filed Critical Grundy & Partners Ltd
Publication of SE8306414D0 publication Critical patent/SE8306414D0/en
Publication of SE8306414L publication Critical patent/SE8306414L/en

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)
  • Facsimiles In General (AREA)
  • Prepayment Telephone Systems (AREA)
  • Telephonic Communication Services (AREA)

Abstract

Such a hybrid connecting circuit which is suitable for use in a safety telephone installation which is connected to a public telephone system contains a tuning line network BN which can be regulated. Resistor components of the line network BN are switched via electronic switches S1 and S2 in order to match the balancing resistor responding to control signals CS1 and CS2 from a microprocessor control circuit C. Before a tuning process starts, the circuit C selectively operates the switches S1 and S2 in order to tune the balancing resistor and create a suitable tuning using the external resistor which is connected to the opening A of the hybrid, which is directed to two sides. <IMAGE>
SE8306414A 1982-11-24 1983-11-21 FORK CIRCUIT SE8306414L (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB8233467 1982-11-24

Publications (2)

Publication Number Publication Date
SE8306414D0 SE8306414D0 (en) 1983-11-21
SE8306414L true SE8306414L (en) 1984-05-25

Family

ID=10534464

Family Applications (1)

Application Number Title Priority Date Filing Date
SE8306414A SE8306414L (en) 1982-11-24 1983-11-21 FORK CIRCUIT

Country Status (2)

Country Link
DE (1) DE3341376A1 (en)
SE (1) SE8306414L (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2011022355A1 (en) * 2009-08-19 2011-02-24 Ikanos Technology Ltd. Adaptive integrated hybrid with complex adaptation for digital subscriber line systems

Also Published As

Publication number Publication date
DE3341376A1 (en) 1984-05-24
SE8306414D0 (en) 1983-11-21

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Legal Events

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Ref document number: 8306414-7

Effective date: 19850726