JPS5248952A - Voltage control variable gain circuit - Google Patents

Voltage control variable gain circuit

Info

Publication number
JPS5248952A
JPS5248952A JP12444075A JP12444075A JPS5248952A JP S5248952 A JPS5248952 A JP S5248952A JP 12444075 A JP12444075 A JP 12444075A JP 12444075 A JP12444075 A JP 12444075A JP S5248952 A JPS5248952 A JP S5248952A
Authority
JP
Japan
Prior art keywords
variable gain
voltage control
control variable
gain circuit
circuit
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
JP12444075A
Other languages
Japanese (ja)
Other versions
JPS5616964B2 (en
Inventor
Masayuki Katakura
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 JP12444075A priority Critical patent/JPS5248952A/en
Priority to US05/730,629 priority patent/US4091295A/en
Priority to DE2645619A priority patent/DE2645619C3/en
Priority to DE2660312A priority patent/DE2660312C3/en
Publication of JPS5248952A publication Critical patent/JPS5248952A/en
Publication of JPS5616964B2 publication Critical patent/JPS5616964B2/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

Landscapes

  • Control Of Amplification And Gain Control (AREA)
  • Tone Control, Compression And Expansion, Limiting Amplitude (AREA)

Abstract

PURPOSE:The phase inverse revolution circuit is used in voltage control variable gain circuit of noise reduction equipment. In this way, a control quality of high accuracy and wide control range is obtained, eliminating the necessity of different-polarity transistor.
JP12444075A 1975-10-08 1975-10-17 Voltage control variable gain circuit Granted JPS5248952A (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
JP12444075A JPS5248952A (en) 1975-10-17 1975-10-17 Voltage control variable gain circuit
US05/730,629 US4091295A (en) 1975-10-08 1976-10-07 Transistor circuit
DE2645619A DE2645619C3 (en) 1975-10-08 1976-10-08 Transistor circuit
DE2660312A DE2660312C3 (en) 1975-10-08 1976-10-08 Voltage controlled amplifier, which is only equipped with NPN transistors

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP12444075A JPS5248952A (en) 1975-10-17 1975-10-17 Voltage control variable gain circuit

Publications (2)

Publication Number Publication Date
JPS5248952A true JPS5248952A (en) 1977-04-19
JPS5616964B2 JPS5616964B2 (en) 1981-04-20

Family

ID=14885543

Family Applications (1)

Application Number Title Priority Date Filing Date
JP12444075A Granted JPS5248952A (en) 1975-10-08 1975-10-17 Voltage control variable gain circuit

Country Status (1)

Country Link
JP (1) JPS5248952A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5780816A (en) * 1980-11-08 1982-05-20 Sony Corp Voltage control variable gain circuit

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63253665A (en) * 1987-04-09 1988-10-20 Mitsubishi Electric Corp Semiconductor device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5780816A (en) * 1980-11-08 1982-05-20 Sony Corp Voltage control variable gain circuit

Also Published As

Publication number Publication date
JPS5616964B2 (en) 1981-04-20

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