JPS5646313A - Variable gain amplifier - Google Patents

Variable gain amplifier

Info

Publication number
JPS5646313A
JPS5646313A JP12186679A JP12186679A JPS5646313A JP S5646313 A JPS5646313 A JP S5646313A JP 12186679 A JP12186679 A JP 12186679A JP 12186679 A JP12186679 A JP 12186679A JP S5646313 A JPS5646313 A JP S5646313A
Authority
JP
Japan
Prior art keywords
increases
voltage
increase
output
variable 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.)
Granted
Application number
JP12186679A
Other languages
English (en)
Japanese (ja)
Other versions
JPS6213844B2 (enrdf_load_stackoverflow
Inventor
Tsutomu Sugawara
Hisashi Yamada
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.)
Toshiba Corp
Original Assignee
Toshiba Corp
Tokyo Shibaura Electric 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 Toshiba Corp, Tokyo Shibaura Electric Co Ltd filed Critical Toshiba Corp
Priority to JP12186679A priority Critical patent/JPS5646313A/ja
Publication of JPS5646313A publication Critical patent/JPS5646313A/ja
Publication of JPS6213844B2 publication Critical patent/JPS6213844B2/ja
Granted legal-status Critical Current

Links

Classifications

    • 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
    • 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 in emitter-coupled or cascode amplifiers

Landscapes

  • Control Of Amplification And Gain Control (AREA)
JP12186679A 1979-09-21 1979-09-21 Variable gain amplifier Granted JPS5646313A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP12186679A JPS5646313A (en) 1979-09-21 1979-09-21 Variable gain amplifier

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP12186679A JPS5646313A (en) 1979-09-21 1979-09-21 Variable gain amplifier

Publications (2)

Publication Number Publication Date
JPS5646313A true JPS5646313A (en) 1981-04-27
JPS6213844B2 JPS6213844B2 (enrdf_load_stackoverflow) 1987-03-30

Family

ID=14821856

Family Applications (1)

Application Number Title Priority Date Filing Date
JP12186679A Granted JPS5646313A (en) 1979-09-21 1979-09-21 Variable gain amplifier

Country Status (1)

Country Link
JP (1) JPS5646313A (enrdf_load_stackoverflow)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5857807A (ja) * 1981-10-02 1983-04-06 Sony Corp 電圧制御可変利得回路
US4727335A (en) * 1985-09-19 1988-02-23 Nippon Gakki Seizo Kabushiki Kaisha Gain-controlled amplifier
US5387877A (en) * 1993-06-17 1995-02-07 Exar Corporation Voltage controlled attenuator for speakerphones
US5544242A (en) * 1993-05-25 1996-08-06 Exar Corporation Speakerphone with event driven control circuit

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5857807A (ja) * 1981-10-02 1983-04-06 Sony Corp 電圧制御可変利得回路
US4516081A (en) * 1981-10-02 1985-05-07 Sony Corporation Voltage controlled variable gain circuit
US4727335A (en) * 1985-09-19 1988-02-23 Nippon Gakki Seizo Kabushiki Kaisha Gain-controlled amplifier
US5544242A (en) * 1993-05-25 1996-08-06 Exar Corporation Speakerphone with event driven control circuit
US5387877A (en) * 1993-06-17 1995-02-07 Exar Corporation Voltage controlled attenuator for speakerphones

Also Published As

Publication number Publication date
JPS6213844B2 (enrdf_load_stackoverflow) 1987-03-30

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