BE505025A - - Google Patents

Info

Publication number
BE505025A
BE505025A BE505025DA BE505025A BE 505025 A BE505025 A BE 505025A BE 505025D A BE505025D A BE 505025DA BE 505025 A BE505025 A BE 505025A
Authority
BE
Belgium
Application number
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.)
Publication of BE505025A publication Critical patent/BE505025A/xx

Links

Classifications

    • 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
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F1/00—Details of amplifiers with only discharge tubes, only semiconductor devices or only unspecified devices as amplifying elements
    • H03F1/34—Negative-feedback-circuit arrangements with or without positive feedback
    • H03F1/36—Negative-feedback-circuit arrangements with or without positive feedback in discharge-tube amplifiers
    • 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
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F3/00—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
    • H03F3/26—Push-pull amplifiers; Phase-splitters therefor
    • H03F3/28—Push-pull amplifiers; Phase-splitters therefor with tubes only
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03G—CONTROL OF AMPLIFICATION
    • H03G3/00—Gain control in amplifiers or frequency changers
    • H03G3/20—Automatic control
    • H03G3/22—Automatic control in amplifiers having discharge tubes
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B3/00—Line transmission systems
    • H04B3/02—Details
    • H04B3/04—Control of transmission; Equalising
    • H04B3/10—Control of transmission; Equalising by pilot signal

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Multimedia (AREA)
  • Amplifiers (AREA)
  • Monitoring And Testing Of Transmission In General (AREA)
  • Radio Relay Systems (AREA)
BE505025D 1950-08-02 BE505025A (un)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NL700129X 1950-08-02
GB5695/55A GB764175A (en) 1950-08-02 1955-02-25 Improvements in or relating to safe-guarding arrangements for electric communicationsystems

Publications (1)

Publication Number Publication Date
BE505025A true BE505025A (un)

Family

ID=26240078

Family Applications (3)

Application Number Title Priority Date Filing Date
BE505025D BE505025A (un) 1950-08-02
BE505008D BE505008A (un) 1950-08-02
BE544533D BE544533A (un) 1950-08-02

Family Applications After (2)

Application Number Title Priority Date Filing Date
BE505008D BE505008A (un) 1950-08-02
BE544533D BE544533A (un) 1950-08-02

Country Status (6)

Country Link
US (2) US2740850A (un)
BE (3) BE544533A (un)
DE (3) DE972713C (un)
FR (7) FR981784A (un)
GB (3) GB672169A (un)
NL (2) NL78172C (un)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3029317A (en) * 1956-09-28 1962-04-10 Rca Corp Frequency selective negative feedback recording circuitry
US3047815A (en) * 1959-07-03 1962-07-31 Gen Electric Phase component eliminator
GB886257A (en) * 1959-10-29 1962-01-03 John Somerset Murray Valve amplifier
US3178698A (en) * 1960-09-14 1965-04-13 Bell Telephone Labor Inc Regulator alarm circuit
US3328716A (en) * 1963-09-03 1967-06-27 Automatic Elect Lab Gain regulation circuit utilizing electrochemical memory means in variolosser control circuit
US3359511A (en) * 1964-11-04 1967-12-19 Ampex Automatic gain control system with pilot signal
AU407352B2 (en) * 1965-12-29 1970-10-15 Improvements in automatic gain regulators
US3763434A (en) * 1972-03-02 1973-10-02 Motorola Inc Battery connecting structure for portable device
US4287477A (en) * 1979-02-22 1981-09-01 Dynamic Compliance, Incorporated Feedback arrangement
US5742202A (en) * 1996-05-31 1998-04-21 Scientific-Atlanta, Inc. Method and apparatus for dynamic automatic gain control when pilot signal is lost

Family Cites Families (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1984400A (en) * 1928-04-26 1934-12-18 Rca Corp Sensitivity control for radio receiving systems
US1822758A (en) * 1928-09-21 1931-09-08 Toulon Pierre Marie Gabriel System for transmitting and amplifying vibratory currents and movements
US1859498A (en) * 1928-10-02 1932-05-24 American Telephone & Telegraph Vacuum tube control system
US1811954A (en) * 1928-12-17 1931-06-30 American Telephone & Telegraph Transmission volume control
DE584781C (de) * 1930-03-06 1933-09-23 Aeg Elektrodynamischer Lautsprecher
US1949848A (en) * 1930-08-04 1934-03-06 Rca Corp Radioreceiver
GB413383A (en) * 1933-01-25 1934-07-19 Leonard Ernest Ryall Variable attenuation networks capable of providing automatic volume control of alternating signal currents
DE657057C (de) * 1933-08-31 1938-02-24 Siemens & Halske Akt Ges Anordnung zur Regelung des UEbertragungsmasses in Signaluebertragungssystemen
GB438565A (en) * 1934-05-26 1935-11-19 Standard Telephones Cables Ltd Thermionic valve circuits
NL43890C (un) * 1935-01-05
GB456062A (en) * 1935-03-28 1936-10-28 Frederick Gordon Frost Improvements in and relating to circuits for use with thermionic valves
US2220770A (en) * 1937-01-30 1940-11-05 Gen Electric Apparatus for controlling the apparent resistance of an amplifier anode
AT159204B (de) * 1938-02-26 1940-07-25 Siemens Ag Verfahren und Anordnung zur Erfassung oder Beeinflussung der Bewegungsvorgänge in dynamischen Lautsprechern.
US2365575A (en) * 1941-12-31 1944-12-19 Gen Electric Electron discharge amplifier
US2383867A (en) * 1943-01-13 1945-08-28 Rca Corp Power output amplifier circuit
US2379069A (en) * 1943-07-24 1945-06-26 Bell Telephone Labor Inc Automatic line testing and switching circuits
US2396990A (en) * 1943-12-09 1946-03-19 Bell Telephone Labor Inc Automatic line testing and switching circuits
GB673258A (en) * 1949-05-28 1952-06-04 Rca Corp Improvements in signal amplitude control systems employing semi-conductor devices
GB693255A (en) * 1951-04-12 1953-06-24 Automatic Telephone & Elect Improvements in or relating to carrier current transmission systems

Also Published As

Publication number Publication date
BE505008A (un)
DE1027730B (de) 1958-04-10
NL78172C (un)
US2740850A (en) 1956-04-03
GB672169A (en) 1952-05-14
FR64203E (fr) 1955-11-09
FR981784A (fr) 1951-05-30
GB700129A (en) 1953-11-25
FR64204E (fr) 1955-11-09
BE544533A (un)
NL155159B (nl)
GB764175A (en) 1956-12-19
FR71323E (fr) 1959-12-22
FR67870E (fr) 1958-03-25
FR61930E (fr) 1955-05-31
FR70706E (fr) 1959-06-10
DE1108277B (de) 1961-06-08
DE972713C (de) 1959-09-10
US2921267A (en) 1960-01-12

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