JPS5396746A - Automatic gain control circuit - Google Patents

Automatic gain control circuit

Info

Publication number
JPS5396746A
JPS5396746A JP1072377A JP1072377A JPS5396746A JP S5396746 A JPS5396746 A JP S5396746A JP 1072377 A JP1072377 A JP 1072377A JP 1072377 A JP1072377 A JP 1072377A JP S5396746 A JPS5396746 A JP S5396746A
Authority
JP
Japan
Prior art keywords
control circuit
gain control
automatic gain
time
gain
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
JP1072377A
Other languages
Japanese (ja)
Inventor
Kunihiro Kato
Masakazu Nishino
Harumitsu Saito
Ryoichi Okayasu
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.)
Nippon Telegraph and Telephone Corp
Original Assignee
Nippon Telegraph and Telephone 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 Nippon Telegraph and Telephone Corp filed Critical Nippon Telegraph and Telephone Corp
Priority to JP1072377A priority Critical patent/JPS5396746A/en
Publication of JPS5396746A publication Critical patent/JPS5396746A/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
    • H03G3/34—Muting amplifier when no signal is present or when only weak signals are present, or caused by the presence of noise signals, e.g. squelch systems
    • H03G3/348—Muting in response to a mechanical action or to power supply variations, e.g. during tuning; Click removal circuits

Landscapes

  • Control Of Amplification And Gain Control (AREA)

Abstract

PURPOSE:To improve signal tone quality characteristic with reducing initial distortion by providing a time-limit suppression circuit and lowering the gain of an amplifier for a prescribed time after power switch closing.
JP1072377A 1977-02-04 1977-02-04 Automatic gain control circuit Pending JPS5396746A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1072377A JPS5396746A (en) 1977-02-04 1977-02-04 Automatic gain control circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1072377A JPS5396746A (en) 1977-02-04 1977-02-04 Automatic gain control circuit

Publications (1)

Publication Number Publication Date
JPS5396746A true JPS5396746A (en) 1978-08-24

Family

ID=11758196

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1072377A Pending JPS5396746A (en) 1977-02-04 1977-02-04 Automatic gain control circuit

Country Status (1)

Country Link
JP (1) JPS5396746A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH03145312A (en) * 1989-10-31 1991-06-20 Nec Corp Automatic gain control high frequency amplifier

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5011441B1 (en) * 1971-02-06 1975-05-01

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5011441B1 (en) * 1971-02-06 1975-05-01

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH03145312A (en) * 1989-10-31 1991-06-20 Nec Corp Automatic gain control high frequency amplifier

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