JPS543414A - Gain control system - Google Patents

Gain control system

Info

Publication number
JPS543414A
JPS543414A JP6789277A JP6789277A JPS543414A JP S543414 A JPS543414 A JP S543414A JP 6789277 A JP6789277 A JP 6789277A JP 6789277 A JP6789277 A JP 6789277A JP S543414 A JPS543414 A JP S543414A
Authority
JP
Japan
Prior art keywords
gain control
control system
control
gain
secure
Prior art date
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.)
Pending
Application number
JP6789277A
Other languages
Japanese (ja)
Inventor
Tokuo Minami
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.)
Hitachi Ltd
Original Assignee
Hitachi Ltd
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 Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP6789277A priority Critical patent/JPS543414A/en
Publication of JPS543414A publication Critical patent/JPS543414A/en
Pending legal-status Critical Current

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
    • 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
    • H03G1/0017—Circuits characterised by the type of controlling devices operated by a controlling current or voltage signal the device being at least one of the amplifying solid state elements of the amplifier
    • H03G1/0023—Circuits characterised by the type of controlling devices operated by a controlling current or voltage signal the device being at least one of the amplifying solid state elements of the amplifier in emitter-coupled or cascode amplifiers

Landscapes

  • Control Of Amplification And Gain Control (AREA)
  • Superheterodyne Receivers (AREA)

Abstract

PURPOSE:To secure a steady control for the gain over a wide range by drawing out the frequency-converted signal through the gain control from the balanced mixture circuit by the control signal proportional to the carrier level.
JP6789277A 1977-06-10 1977-06-10 Gain control system Pending JPS543414A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP6789277A JPS543414A (en) 1977-06-10 1977-06-10 Gain control system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6789277A JPS543414A (en) 1977-06-10 1977-06-10 Gain control system

Publications (1)

Publication Number Publication Date
JPS543414A true JPS543414A (en) 1979-01-11

Family

ID=13357988

Family Applications (1)

Application Number Title Priority Date Filing Date
JP6789277A Pending JPS543414A (en) 1977-06-10 1977-06-10 Gain control system

Country Status (1)

Country Link
JP (1) JPS543414A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5819037A (en) * 1981-07-27 1983-02-03 Hitachi Ltd Fm receiver and integrated circuit device for fm signal processing

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5819037A (en) * 1981-07-27 1983-02-03 Hitachi Ltd Fm receiver and integrated circuit device for fm signal processing

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