SE339704B - - Google Patents

Info

Publication number
SE339704B
SE339704B SE17418/70A SE1741870A SE339704B SE 339704 B SE339704 B SE 339704B SE 17418/70 A SE17418/70 A SE 17418/70A SE 1741870 A SE1741870 A SE 1741870A SE 339704 B SE339704 B SE 339704B
Authority
SE
Sweden
Application number
SE17418/70A
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
Priority to SE17418/70A priority Critical patent/SE339704B/xx
Publication of SE339704B publication Critical patent/SE339704B/xx
Priority to US00203599A priority patent/US3745262A/en
Priority to DE2163126A priority patent/DE2163126C3/de
Priority to CH1842571A priority patent/CH543840A/de
Priority to FR7146002A priority patent/FR2119584A5/fr
Priority to DK627271AA priority patent/DK134090B/da
Priority to IT32699/71A priority patent/IT944168B/it
Priority to NO4765/71A priority patent/NO125753B/no
Priority to GB5943771A priority patent/GB1351328A/en
Priority to CA130,859A priority patent/CA941534A/en

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03G—CONTROL OF AMPLIFICATION
    • H03G3/00—Gain control in amplifiers or frequency changers
    • H03G3/20—Automatic control
    • H03G3/30—Automatic control in amplifiers having semiconductor devices
    • H03G3/3005—Automatic control in amplifiers having semiconductor devices in amplifiers suitable for low-frequencies, e.g. audio amplifiers
    • 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
    • H04M9/10—Two-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)
SE17418/70A 1970-12-22 1970-12-22 SE339704B (xx)

Priority Applications (10)

Application Number Priority Date Filing Date Title
SE17418/70A SE339704B (xx) 1970-12-22 1970-12-22
US00203599A US3745262A (en) 1970-12-22 1971-12-01 Amplifier arrangement for telephone instrument
DE2163126A DE2163126C3 (de) 1970-12-22 1971-12-14 Verstärkeranordnung für einen Telefonapparat
CH1842571A CH543840A (de) 1970-12-22 1971-12-17 Verstärkeranordnung für einen Telefonapparat
FR7146002A FR2119584A5 (xx) 1970-12-22 1971-12-21
DK627271AA DK134090B (da) 1970-12-22 1971-12-21 Forstærkerapparat til et telefonapparat.
IT32699/71A IT944168B (it) 1970-12-22 1971-12-21 Dispositivo amplificatore per appa recchio telefonico
NO4765/71A NO125753B (xx) 1970-12-22 1971-12-21
GB5943771A GB1351328A (en) 1970-12-22 1971-12-21 Elevel-control arrangement
CA130,859A CA941534A (en) 1970-12-22 1971-12-22 Amplifier arrangement for telephone instrument

Applications Claiming Priority (1)

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

Publications (1)

Publication Number Publication Date
SE339704B true SE339704B (xx) 1971-10-18

Family

ID=20303614

Family Applications (1)

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

Country Status (10)

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

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE365375B (xx) * 1972-12-18 1974-03-18 Ericsson Telefon Ab L M
JPS5242643B2 (xx) * 1973-10-18 1977-10-26
JPS5411203B2 (xx) * 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 (xx) * 1960-10-04 1900-01-01
US3395255A (en) * 1964-07-01 1968-07-30 Bell Telephone Labor Inc Loudspeaking telephone
SE311031B (xx) * 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
IT944168B (it) 1973-04-20
CA941534A (en) 1974-02-05
DK134090B (da) 1976-09-06
US3745262A (en) 1973-07-10
NO125753B (xx) 1972-10-23
DE2163126C3 (de) 1979-06-21
CH543840A (de) 1973-10-31
DK134090C (xx) 1977-02-07
GB1351328A (en) 1974-04-24
FR2119584A5 (xx) 1972-08-04
DE2163126B2 (de) 1973-02-08
DE2163126A1 (de) 1972-07-06

Similar Documents

Publication Publication Date Title
FR2119584A5 (xx)
AU465421B2 (xx)
AU2044470A (xx)
AU3330871A (xx)
AU1716970A (xx)
AU1833270A (xx)
AU2017870A (xx)
AU2085370A (xx)
AU2130570A (xx)
AU1918570A (xx)
AU1879170A (xx)
AU1591370A (xx)
AU1603270A (xx)
AU1689770A (xx)
AU1086670A (xx)
AU1789870A (xx)
AU1832970A (xx)
AU1841070A (xx)
AU1083170A (xx)
AU1872870A (xx)
AU1974970A (xx)
AU1881070A (xx)
AU2144270A (xx)
AU2131570A (xx)
AU2130770A (xx)