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JPS5432953A - Automatic gain control circuit - Google Patents

Automatic gain control circuit

Info

Publication number
JPS5432953A
JPS5432953A JP9965577A JP9965577A JPS5432953A JP S5432953 A JPS5432953 A JP S5432953A JP 9965577 A JP9965577 A JP 9965577A JP 9965577 A JP9965577 A JP 9965577A JP S5432953 A JPS5432953 A JP S5432953A
Authority
JP
Japan
Prior art keywords
control circuit
gain control
automatic gain
circuit
impedance
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
JP9965577A
Other languages
Japanese (ja)
Inventor
Kiyoshi Obata
Katsuhisa Nishimura
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.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial Co 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 Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Priority to JP9965577A priority Critical patent/JPS5432953A/en
Publication of JPS5432953A publication Critical patent/JPS5432953A/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
    • H03G3/3005—Automatic control in amplifiers having semiconductor devices in amplifiers suitable for low-frequencies, e.g. audio amplifiers
    • H03G3/301—Automatic control in amplifiers having semiconductor devices in amplifiers suitable for low-frequencies, e.g. audio amplifiers the gain being continuously variable

Landscapes

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

Abstract

PURPOSE:To reduce the high frequency distortion and sump by constituting a circuit so that the impedance of the variable impedance circuit may be controlled by the output signal level of an operational amplifier.
JP9965577A 1977-08-19 1977-08-19 Automatic gain control circuit Pending JPS5432953A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP9965577A JPS5432953A (en) 1977-08-19 1977-08-19 Automatic gain control circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9965577A JPS5432953A (en) 1977-08-19 1977-08-19 Automatic gain control circuit

Publications (1)

Publication Number Publication Date
JPS5432953A true JPS5432953A (en) 1979-03-10

Family

ID=14253060

Family Applications (1)

Application Number Title Priority Date Filing Date
JP9965577A Pending JPS5432953A (en) 1977-08-19 1977-08-19 Automatic gain control circuit

Country Status (1)

Country Link
JP (1) JPS5432953A (en)

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