JPS567507A - Automatic gain control circuit - Google Patents

Automatic gain control circuit

Info

Publication number
JPS567507A
JPS567507A JP8459279A JP8459279A JPS567507A JP S567507 A JPS567507 A JP S567507A JP 8459279 A JP8459279 A JP 8459279A JP 8459279 A JP8459279 A JP 8459279A JP S567507 A JPS567507 A JP S567507A
Authority
JP
Japan
Prior art keywords
signal
input
subtractor
control circuit
gain control
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.)
Granted
Application number
JP8459279A
Other languages
Japanese (ja)
Other versions
JPS6258168B2 (en
Inventor
Koji Morioka
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.)
Mitsubishi Electric Corp
Original Assignee
Mitsubishi Electric 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 Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Priority to JP8459279A priority Critical patent/JPS567507A/en
Publication of JPS567507A publication Critical patent/JPS567507A/en
Publication of JPS6258168B2 publication Critical patent/JPS6258168B2/ja
Granted 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
    • H03G3/3005—Automatic control in amplifiers having semiconductor devices in amplifiers suitable for low-frequencies, e.g. audio amplifiers

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Control Of Amplification And Gain Control (AREA)

Abstract

PURPOSE:To amplify the input signal to the signal of a given amplitude with high stability, by multiplying the amplitude values of the output signal and input signal and negative feedback the product after being amplified with a given gain. CONSTITUTION:The input signal A is input to the subtractor 1 and the amplitude detection circuit 2. The subtractor 1 outputs the signal subtracting the feedback signal KaB from the input signal A and it is input to the amplifier 3 to output the signal B. The signal B is input to the multiplier 4 together with the signal (a) applied from the amplitude detection circuit 2, resulting in being the multiplied signal aB and further being the signal KaB via the amplifier 5, to be fed back to the subtractor 1.
JP8459279A 1979-07-02 1979-07-02 Automatic gain control circuit Granted JPS567507A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8459279A JPS567507A (en) 1979-07-02 1979-07-02 Automatic gain control circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8459279A JPS567507A (en) 1979-07-02 1979-07-02 Automatic gain control circuit

Publications (2)

Publication Number Publication Date
JPS567507A true JPS567507A (en) 1981-01-26
JPS6258168B2 JPS6258168B2 (en) 1987-12-04

Family

ID=13834941

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8459279A Granted JPS567507A (en) 1979-07-02 1979-07-02 Automatic gain control circuit

Country Status (1)

Country Link
JP (1) JPS567507A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5977747U (en) * 1982-11-17 1984-05-25 株式会社東海理化電機製作所 pressure switch

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5977747U (en) * 1982-11-17 1984-05-25 株式会社東海理化電機製作所 pressure switch

Also Published As

Publication number Publication date
JPS6258168B2 (en) 1987-12-04

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