JPS5266357A - Gain control circuit - Google Patents

Gain control circuit

Info

Publication number
JPS5266357A
JPS5266357A JP14167775A JP14167775A JPS5266357A JP S5266357 A JPS5266357 A JP S5266357A JP 14167775 A JP14167775 A JP 14167775A JP 14167775 A JP14167775 A JP 14167775A JP S5266357 A JPS5266357 A JP S5266357A
Authority
JP
Japan
Prior art keywords
control circuit
gain control
receivers
circuit
deaden
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
JP14167775A
Other languages
Japanese (ja)
Other versions
JPS604614B2 (en
Inventor
Shigeki Inoue
Masanori Ienaka
Yasuo Kominami
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.)
Hitachi Ltd
Original Assignee
Hitachi 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 Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP50141677A priority Critical patent/JPS604614B2/en
Publication of JPS5266357A publication Critical patent/JPS5266357A/en
Publication of JPS604614B2 publication Critical patent/JPS604614B2/en
Expired legal-status Critical Current

Links

Landscapes

  • Control Of Amplification And Gain Control (AREA)
  • Noise Elimination (AREA)

Abstract

PURPOSE: To improve SN ratio at the time of low signal level and to deaden unpleasant noises of the receivers, by modifying the transistor of constant-current circuit, to be connected to the variable impedance circuit consisting a mute circuit which is used in the receivers, into a resistance emitter of grounded type so that the working range is changed.
COPYRIGHT: (C)1977,JPO&Japio
JP50141677A 1975-11-28 1975-11-28 gain control circuit Expired JPS604614B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP50141677A JPS604614B2 (en) 1975-11-28 1975-11-28 gain control circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP50141677A JPS604614B2 (en) 1975-11-28 1975-11-28 gain control circuit

Publications (2)

Publication Number Publication Date
JPS5266357A true JPS5266357A (en) 1977-06-01
JPS604614B2 JPS604614B2 (en) 1985-02-05

Family

ID=15297621

Family Applications (1)

Application Number Title Priority Date Filing Date
JP50141677A Expired JPS604614B2 (en) 1975-11-28 1975-11-28 gain control circuit

Country Status (1)

Country Link
JP (1) JPS604614B2 (en)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4890446A (en) * 1972-03-02 1973-11-26
JPS4911448A (en) * 1972-05-31 1974-01-31
JPS4911263A (en) * 1972-05-27 1974-01-31

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4890446A (en) * 1972-03-02 1973-11-26
JPS4911263A (en) * 1972-05-27 1974-01-31
JPS4911448A (en) * 1972-05-31 1974-01-31

Also Published As

Publication number Publication date
JPS604614B2 (en) 1985-02-05

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