IT7927986A0 - Sistema amplificatore dotato di controllo automatico del guadagno, ad esempio per radioricevitori a modulazione d'ampiezza. - Google Patents

Sistema amplificatore dotato di controllo automatico del guadagno, ad esempio per radioricevitori a modulazione d'ampiezza.

Info

Publication number
IT7927986A0
IT7927986A0 IT7927986A IT2798679A IT7927986A0 IT 7927986 A0 IT7927986 A0 IT 7927986A0 IT 7927986 A IT7927986 A IT 7927986A IT 2798679 A IT2798679 A IT 2798679A IT 7927986 A0 IT7927986 A0 IT 7927986A0
Authority
IT
Italy
Prior art keywords
gain control
amplitude modulation
automatic gain
system equipped
amplifier system
Prior art date
Application number
IT7927986A
Other languages
English (en)
Other versions
IT1194600B (it
Inventor
Malchow Max Edward
Original Assignee
Rca Corp
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 Rca Corp filed Critical Rca Corp
Publication of IT7927986A0 publication Critical patent/IT7927986A0/it
Application granted granted Critical
Publication of IT1194600B publication Critical patent/IT1194600B/it

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
    • H03G3/3052—Automatic control in amplifiers having semiconductor devices in bandpass amplifiers (H.F. or I.F.) or in frequency-changers used in a (super)heterodyne receiver
    • H03G3/3063—Automatic control in amplifiers having semiconductor devices in bandpass amplifiers (H.F. or I.F.) or in frequency-changers used in a (super)heterodyne receiver using at least one transistor as controlling device, the transistor being used as a variable impedance device
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; ELECTRIC HEARING AIDS; PUBLIC ADDRESS SYSTEMS
    • H04R25/00—Electric hearing aids
    • H04R25/35—Electric hearing aids using translation techniques
    • H04R25/356—Amplitude, e.g. amplitude shift or compression
IT27986/79A 1978-12-11 1979-12-07 Sistema amplificatore dotato di controllo automatico del guadagno,ad esempio per radioricevitori a modulazione d'ampiezza IT1194600B (it)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US05/968,443 US4249137A (en) 1978-12-11 1978-12-11 Amplifier system with AGC, as for an AM radio

Publications (2)

Publication Number Publication Date
IT7927986A0 true IT7927986A0 (it) 1979-12-07
IT1194600B IT1194600B (it) 1988-09-22

Family

ID=25514280

Family Applications (1)

Application Number Title Priority Date Filing Date
IT27986/79A IT1194600B (it) 1978-12-11 1979-12-07 Sistema amplificatore dotato di controllo automatico del guadagno,ad esempio per radioricevitori a modulazione d'ampiezza

Country Status (7)

Country Link
US (1) US4249137A (it)
JP (1) JPS5582520A (it)
BR (1) BR7908047A (it)
DE (1) DE2949779A1 (it)
FR (1) FR2444366A1 (it)
GB (1) GB2038576A (it)
IT (1) IT1194600B (it)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4731585A (en) * 1987-02-24 1988-03-15 Kabushiki Kaisha Toshiba Antenna coupling circuit for magnetic resonance imaging
JPH08307181A (ja) * 1995-05-09 1996-11-22 Sony Corp レベル制御回路
US5990750A (en) * 1998-03-16 1999-11-23 Lockheed Martin Corporation Amplifier and driver system with multichannel operation
US6259323B1 (en) 1999-12-17 2001-07-10 Nokia Mobile Phones Ltd. Gain control for low noise amplifier
US6873212B2 (en) * 2001-05-17 2005-03-29 Sige Semiconductor Inc. Integrated circuit radio frequency amplifier with notch filter
DE10039438C2 (de) * 2000-08-11 2002-06-20 Infineon Technologies Ag Zweistufiger Operationsverstärker
US8064176B2 (en) * 2007-04-06 2011-11-22 Intersil Americas Inc. EOS robust bipolar transient clamp
US11735902B2 (en) 2020-03-24 2023-08-22 Analog Devices International Unlimited Company Bipolar junction transistor heater circuit

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3143711A (en) * 1961-04-14 1964-08-04 Collins Radio Co Transistor amplifier cutoff means at high signal levels
US3264564A (en) * 1963-02-07 1966-08-02 Rca Corp Variable impedance device for transistor automatic gain control
US3421100A (en) * 1966-11-10 1969-01-07 Rca Corp Direct coupled amplifier including twostage automatic gain control
JPS5325628B2 (it) * 1973-02-15 1978-07-27
JPS5630961B2 (it) * 1973-09-10 1981-07-18
DE2701412C2 (de) * 1977-01-14 1985-07-25 Gerhard Prof. Dr.-Ing. 8012 Ottobrunn Flachenecker Empfangsanlage mit aktiver Antenne

Also Published As

Publication number Publication date
DE2949779A1 (de) 1980-06-19
IT1194600B (it) 1988-09-22
FR2444366A1 (fr) 1980-07-11
BR7908047A (pt) 1980-07-22
US4249137A (en) 1981-02-03
JPS5582520A (en) 1980-06-21
GB2038576A (en) 1980-07-23

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