BE793381A - Dispositif d'emission et de reception d'impulsions telephoniques - Google Patents

Dispositif d'emission et de reception d'impulsions telephoniques

Info

Publication number
BE793381A
BE793381A BE793381DA BE793381A BE 793381 A BE793381 A BE 793381A BE 793381D A BE793381D A BE 793381DA BE 793381 A BE793381 A BE 793381A
Authority
BE
Belgium
Prior art keywords
reception device
pulses transmission
telephone
telephone pulses
transmission
Prior art date
Application number
Other languages
English (en)
French (fr)
Original Assignee
Ass Ouvriers Instr Precision
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 Ass Ouvriers Instr Precision filed Critical Ass Ouvriers Instr Precision
Publication of BE793381A publication Critical patent/BE793381A/xx

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
    • H04B1/586—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 using an electronic circuit
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H11/00—Networks using active elements
    • H03H11/02—Multiple-port networks
    • H03H11/04—Frequency selective two-port networks
    • H03H11/12—Frequency selective two-port networks using amplifiers with feedback
    • H03H11/1213—Frequency selective two-port networks using amplifiers with feedback using transistor amplifiers
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H11/00—Networks using active elements
    • H03H11/02—Multiple-port networks
    • H03H11/04—Frequency selective two-port networks
    • H03H11/12—Frequency selective two-port networks using amplifiers with feedback
    • H03H11/1217—Frequency selective two-port networks using amplifiers with feedback using a plurality of operational amplifiers
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H11/00—Networks using active elements
    • H03H11/02—Multiple-port networks
    • H03H11/04—Frequency selective two-port networks
    • H03H11/12—Frequency selective two-port networks using amplifiers with feedback
    • H03H11/126—Frequency selective two-port networks using amplifiers with feedback using a single operational amplifier
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H11/00—Networks using active elements
    • H03H11/02—Multiple-port networks
    • H03H11/04—Frequency selective two-port networks
    • H03H11/12—Frequency selective two-port networks using amplifiers with feedback
    • H03H11/126—Frequency selective two-port networks using amplifiers with feedback using a single operational amplifier
    • H03H11/1286—Sallen-Key biquad
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
  • Amplifiers (AREA)
  • Networks Using Active Elements (AREA)
BE793381D 1972-01-04 1972-12-27 Dispositif d'emission et de reception d'impulsions telephoniques BE793381A (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR7200102A FR2166696A5 (it) 1972-01-04 1972-01-04
FR7243763A FR2250462A6 (it) 1972-01-04 1972-12-08

Publications (1)

Publication Number Publication Date
BE793381A true BE793381A (fr) 1973-04-16

Family

ID=26216817

Family Applications (1)

Application Number Title Priority Date Filing Date
BE793381D BE793381A (fr) 1972-01-04 1972-12-27 Dispositif d'emission et de reception d'impulsions telephoniques

Country Status (8)

Country Link
US (1) US4001524A (it)
BE (1) BE793381A (it)
CH (1) CH583484A5 (it)
DE (1) DE2300318A1 (it)
FR (2) FR2166696A5 (it)
GB (1) GB1424381A (it)
IT (1) IT976320B (it)
NL (1) NL7217601A (it)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2042848B (en) * 1978-12-30 1983-01-06 Plessey Co Ltd Line current feed and hybrid arrangement (sytem x)
DE2911866C3 (de) * 1979-03-26 1982-03-11 Siemens AG, 1000 Berlin und 8000 München Anordnung mit einer Gabelschaltung für den Zweidraht-Vierdraht-Übergang in PCM-Zeitmultiplexsystemen
US4358644A (en) * 1980-06-17 1982-11-09 Rts Systems, Inc. Bilateral current source for a multi-terminal intercom
DE3936894A1 (de) * 1989-11-06 1991-05-08 Bosch Gmbh Robert Multiplex-schaltungsanordnung, insbesondere fuer die ansteuerung von verbraucher-stationen in kraftfahrzeugen
CN100490286C (zh) * 2000-01-03 2009-05-20 哈曼国际工业有限公司 调节功率转换器输出信号的方法、功率转换器及其放大器
US7576627B2 (en) * 2006-04-24 2009-08-18 Bradley University Electronically tunable active duplexer
GB2571732A (en) * 2018-03-06 2019-09-11 Reid Acoustic Designs Ltd An apparatus

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3180947A (en) * 1961-09-12 1965-04-27 Sylvania Electric Prod Electronic bridge hybrid circuit
US3480742A (en) * 1967-03-31 1969-11-25 Bell Telephone Labor Inc Hybrid circuit
US3586881A (en) * 1967-12-29 1971-06-22 Bell Telephone Labor Inc Transistor hybrid circuit

Also Published As

Publication number Publication date
US4001524A (en) 1977-01-04
CH583484A5 (it) 1976-12-31
FR2250462A6 (it) 1975-05-30
IT976320B (it) 1974-08-20
DE2300318A1 (de) 1973-07-12
GB1424381A (en) 1976-02-11
FR2166696A5 (it) 1973-08-17
NL7217601A (it) 1973-07-06

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