FR2167689B1 - - Google Patents

Info

Publication number
FR2167689B1
FR2167689B1 FR7300244A FR7300244A FR2167689B1 FR 2167689 B1 FR2167689 B1 FR 2167689B1 FR 7300244 A FR7300244 A FR 7300244A FR 7300244 A FR7300244 A FR 7300244A FR 2167689 B1 FR2167689 B1 FR 2167689B1
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
FR7300244A
Other versions
FR2167689A1 (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
Application filed by Telefonaktiebolaget LM Ericsson AB filed Critical Telefonaktiebolaget LM Ericsson AB
Publication of FR2167689A1 publication Critical patent/FR2167689A1/fr
Application granted granted Critical
Publication of FR2167689B1 publication Critical patent/FR2167689B1/fr
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F3/00—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
    • H03F3/181—Low-frequency amplifiers, e.g. audio preamplifiers
    • H03F3/183—Low-frequency amplifiers, e.g. audio preamplifiers with semiconductor devices only
    • H03F3/187—Low-frequency amplifiers, e.g. audio preamplifiers with semiconductor devices only in integrated circuits
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/02—Input arrangements using manually operated switches, e.g. using keyboards or dials

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Multimedia (AREA)
  • Power Engineering (AREA)
  • Human Computer Interaction (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Amplifiers (AREA)
FR7300244A 1972-01-05 1973-01-04 Expired FR2167689B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE00093/72A SE351335B (fr) 1972-01-05 1972-01-05

Publications (2)

Publication Number Publication Date
FR2167689A1 FR2167689A1 (fr) 1973-08-24
FR2167689B1 true FR2167689B1 (fr) 1976-10-29

Family

ID=20256026

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7300244A Expired FR2167689B1 (fr) 1972-01-05 1973-01-04

Country Status (6)

Country Link
US (1) US3825848A (fr)
DE (1) DE2300540B2 (fr)
FR (1) FR2167689B1 (fr)
GB (1) GB1414893A (fr)
IT (1) IT973193B (fr)
SE (1) SE351335B (fr)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2906084C2 (de) * 1979-02-15 1981-10-08 Deutsche Telephonwerke Und Kabelindustrie Ag, 1000 Berlin Schaltungsanordnung zur Übertragung von sprachfrequenten Signalen in Fernsprechanlagen
JPS6041909B2 (ja) * 1980-03-26 1985-09-19 日本電気株式会社 電話機通話回路網
GB8317706D0 (en) * 1983-06-29 1983-08-03 Standard Telephones Cables Ltd Telephone subsets
US6067363A (en) * 1996-06-03 2000-05-23 Ericsson Inc. Audio A/D convertor using frequency modulation
US11755555B2 (en) 2020-10-06 2023-09-12 EMC IP Holding Company LLC Storing an ordered associative array of pairs using an append-only storage medium

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3440351A (en) * 1966-09-09 1969-04-22 Bell Telephone Labor Inc Telephone transmitter circuit employing variable capacitance microphone
US3491203A (en) * 1966-10-18 1970-01-20 Sonotone Corp Temperature stabilized amplifier
GB1211851A (en) * 1967-05-09 1970-11-11 Mullard Ltd Improvements in or relating to circuit arrangements incorporating transistors
DE1762924B1 (de) * 1968-09-24 1970-09-03 Siemens Ag Schaltungsanordnung fuer einen Fernsprechmikrofonverstaerker mit verstaerkerausgangsseitiger Speisung
US3551833A (en) * 1969-05-01 1970-12-29 Motorola Inc Circuit having a reduced number of external connections
US3602830A (en) * 1969-10-21 1971-08-31 Honeywell Inc A constant current control circuit
NL6916988A (fr) * 1969-11-11 1971-05-13

Also Published As

Publication number Publication date
SE351335B (fr) 1972-11-20
IT973193B (it) 1974-06-10
DE2300540A1 (de) 1973-07-12
FR2167689A1 (fr) 1973-08-24
DE2300540B2 (de) 1975-01-02
GB1414893A (en) 1975-11-19
US3825848A (en) 1974-07-23

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Legal Events

Date Code Title Description
ST Notification of lapse