FR2116072A5 - - Google Patents

Info

Publication number
FR2116072A5
FR2116072A5 FR7142363A FR7142363A FR2116072A5 FR 2116072 A5 FR2116072 A5 FR 2116072A5 FR 7142363 A FR7142363 A FR 7142363A FR 7142363 A FR7142363 A FR 7142363A FR 2116072 A5 FR2116072 A5 FR 2116072A5
Authority
FR
France
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
FR7142363A
Other languages
French (fr)
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.)
Telefonaktiebolaget LM Ericsson AB
Original Assignee
Telefonaktiebolaget LM Ericsson AB
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
Priority claimed from SE16092/70A external-priority patent/SE337846B/xx
Priority to GB5073171A priority Critical patent/GB1350142A/en
Priority to DE19712157709 priority patent/DE2157709A1/de
Priority to NL7115909A priority patent/NL7115909A/xx
Priority to CH1719671A priority patent/CH526234A/de
Application filed by Telefonaktiebolaget LM Ericsson AB filed Critical Telefonaktiebolaget LM Ericsson AB
Priority to FR7142363A priority patent/FR2116072A5/fr
Application granted granted Critical
Publication of FR2116072A5 publication Critical patent/FR2116072A5/fr
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H11/00—Networks using active elements
    • H03H11/02—Multiple-port networks
    • H03H11/24—Frequency-independent attenuators
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03G—CONTROL OF AMPLIFICATION
    • H03G1/00—Details of arrangements for controlling amplification
    • H03G1/0005—Circuits characterised by the type of controlling devices operated by a controlling current or voltage signal
    • H03G1/0035—Circuits characterised by the type of controlling devices operated by a controlling current or voltage signal using continuously variable impedance elements
    • H03G1/0082—Circuits characterised by the type of controlling devices operated by a controlling current or voltage signal using continuously variable impedance elements using bipolar transistor-type devices
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M9/00—Arrangements for interconnection not involving centralised switching
    • H04M9/08—Two-way loud-speaking telephone systems with means for conditioning the signal, e.g. for suppressing echoes for one or both directions of traffic

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Networks Using Active Elements (AREA)
  • Circuit For Audible Band Transducer (AREA)
FR7142363A 1970-11-27 1971-11-26 Expired FR2116072A5 (enrdf_load_html_response)

Priority Applications (5)

Application Number Priority Date Filing Date Title
GB5073171A GB1350142A (en) 1970-11-27 1971-11-01 Controllable attenuator
DE19712157709 DE2157709A1 (de) 1970-11-27 1971-11-15 Steuerbares Dämpfungsglied
NL7115909A NL7115909A (enrdf_load_html_response) 1970-11-27 1971-11-18
CH1719671A CH526234A (de) 1970-11-27 1971-11-25 Steuerbares Dämpfungsglied
FR7142363A FR2116072A5 (enrdf_load_html_response) 1970-11-27 1971-11-26

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE16092/70A SE337846B (enrdf_load_html_response) 1970-11-27 1970-11-27
FR7142363A FR2116072A5 (enrdf_load_html_response) 1970-11-27 1971-11-26

Publications (1)

Publication Number Publication Date
FR2116072A5 true FR2116072A5 (enrdf_load_html_response) 1972-07-07

Family

ID=26216737

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7142363A Expired FR2116072A5 (enrdf_load_html_response) 1970-11-27 1971-11-26

Country Status (5)

Country Link
CH (1) CH526234A (enrdf_load_html_response)
DE (1) DE2157709A1 (enrdf_load_html_response)
FR (1) FR2116072A5 (enrdf_load_html_response)
GB (1) GB1350142A (enrdf_load_html_response)
NL (1) NL7115909A (enrdf_load_html_response)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2638286C3 (de) * 1976-08-25 1979-03-01 Dasy Inter S.A., Genf (Schweiz) Schaltungsanordnung für ein Freisprechertelefon
JPH08307181A (ja) * 1995-05-09 1996-11-22 Sony Corp レベル制御回路

Also Published As

Publication number Publication date
CH526234A (de) 1972-07-31
GB1350142A (en) 1974-04-18
NL7115909A (enrdf_load_html_response) 1972-05-30
DE2157709A1 (de) 1972-06-08

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Legal Events

Date Code Title Description
ST Notification of lapse