NO125753B - - Google Patents

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Publication number
NO125753B
NO125753B NO4765/71A NO476571A NO125753B NO 125753 B NO125753 B NO 125753B NO 4765/71 A NO4765/71 A NO 4765/71A NO 476571 A NO476571 A NO 476571A NO 125753 B NO125753 B NO 125753B
Authority
NO
Norway
Prior art keywords
circuit
amplifier
damping
level
integration
Prior art date
Application number
NO4765/71A
Other languages
English (en)
Norwegian (no)
Inventor
U Brolin
O Lindgren
Original Assignee
Ericsson Telefon Ab L M
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 Ericsson Telefon Ab L M filed Critical Ericsson Telefon Ab L M
Publication of NO125753B publication Critical patent/NO125753B/no

Links

Classifications

    • HELECTRICITY
    • H03ELECTRONIC CIRCUITRY
    • H03GCONTROL OF AMPLIFICATION
    • H03G3/00Gain control in amplifiers or frequency changers
    • H03G3/20Automatic control
    • H03G3/30Automatic control in amplifiers having semiconductor devices
    • H03G3/3005Automatic control in amplifiers having semiconductor devices in amplifiers suitable for low-frequencies, e.g. audio amplifiers
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04MTELEPHONIC COMMUNICATION
    • H04M9/00Arrangements for interconnection not involving centralised switching
    • H04M9/08Two-way loud-speaking telephone systems with means for conditioning the signal, e.g. for suppressing echoes for one or both directions of traffic
    • H04M9/10Two-way loud-speaking telephone systems with means for conditioning the signal, e.g. for suppressing echoes for one or both directions of traffic with switching of direction of transmission by voice frequency

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Multimedia (AREA)
  • Control Of Amplification And Gain Control (AREA)
  • Amplifiers (AREA)
NO4765/71A 1970-12-22 1971-12-21 NO125753B (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE17418/70A SE339704B (de) 1970-12-22 1970-12-22

Publications (1)

Publication Number Publication Date
NO125753B true NO125753B (de) 1972-10-23

Family

ID=20303614

Family Applications (1)

Application Number Title Priority Date Filing Date
NO4765/71A NO125753B (de) 1970-12-22 1971-12-21

Country Status (10)

Country Link
US (1) US3745262A (de)
CA (1) CA941534A (de)
CH (1) CH543840A (de)
DE (1) DE2163126C3 (de)
DK (1) DK134090B (de)
FR (1) FR2119584A5 (de)
GB (1) GB1351328A (de)
IT (1) IT944168B (de)
NO (1) NO125753B (de)
SE (1) SE339704B (de)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE365375B (de) * 1972-12-18 1974-03-18 Ericsson Telefon Ab L M
JPS5242643B2 (de) * 1973-10-18 1977-10-26
JPS5411203B2 (de) * 1974-05-02 1979-05-12
US4002852A (en) * 1975-07-08 1977-01-11 International Telephone And Telegraph Corporation Electronic telephone network
DE2822069C2 (de) * 1978-05-20 1986-02-20 Standard Elektrik Lorenz Ag, 7000 Stuttgart Schaltungsanordnung für einen Abhörschutz bei sprachgesteuerten Freisprecheinrichtungen, insbesondere in Fernsprechapparaten
GB2285356B (en) * 1993-12-28 1998-02-25 Nec Corp Reception volume limiting circuit

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL267461A (de) * 1960-10-04 1900-01-01
US3395255A (en) * 1964-07-01 1968-07-30 Bell Telephone Labor Inc Loudspeaking telephone
SE311031B (de) * 1965-12-16 1969-05-27 Ericsson Telefon Ab L M
US3562791A (en) * 1967-12-07 1971-02-09 Int Standard Electric Corp Loudspeaker telephone circuit arrangement

Also Published As

Publication number Publication date
CA941534A (en) 1974-02-05
DK134090C (de) 1977-02-07
DE2163126C3 (de) 1979-06-21
IT944168B (it) 1973-04-20
DE2163126A1 (de) 1972-07-06
CH543840A (de) 1973-10-31
GB1351328A (en) 1974-04-24
SE339704B (de) 1971-10-18
US3745262A (en) 1973-07-10
FR2119584A5 (de) 1972-08-04
DK134090B (da) 1976-09-06
DE2163126B2 (de) 1973-02-08

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