JPS55138909A - Gain adjusting circuit - Google Patents

Gain adjusting circuit

Info

Publication number
JPS55138909A
JPS55138909A JP4748779A JP4748779A JPS55138909A JP S55138909 A JPS55138909 A JP S55138909A JP 4748779 A JP4748779 A JP 4748779A JP 4748779 A JP4748779 A JP 4748779A JP S55138909 A JPS55138909 A JP S55138909A
Authority
JP
Japan
Prior art keywords
signal
input terminal
amplifying circuit
transistor
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
JP4748779A
Other languages
English (en)
Other versions
JPS6311839B2 (ja
Inventor
Kazuo Koizumi
Choichi Fujita
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.)
Sony Corp
Original Assignee
Sony 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 Sony Corp filed Critical Sony Corp
Priority to JP4748779A priority Critical patent/JPS55138909A/ja
Publication of JPS55138909A publication Critical patent/JPS55138909A/ja
Publication of JPS6311839B2 publication Critical patent/JPS6311839B2/ja
Granted 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
    • H03G3/3015—Automatic control in amplifiers having semiconductor devices in amplifiers suitable for low-frequencies, e.g. audio amplifiers the gain being continuously variable using diodes or transistors

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Processing Of Color Television Signals (AREA)
  • Control Of Amplification And Gain Control (AREA)
  • Amplifiers (AREA)
JP4748779A 1979-04-18 1979-04-18 Gain adjusting circuit Granted JPS55138909A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4748779A JPS55138909A (en) 1979-04-18 1979-04-18 Gain adjusting circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4748779A JPS55138909A (en) 1979-04-18 1979-04-18 Gain adjusting circuit

Publications (2)

Publication Number Publication Date
JPS55138909A true JPS55138909A (en) 1980-10-30
JPS6311839B2 JPS6311839B2 (ja) 1988-03-16

Family

ID=12776470

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4748779A Granted JPS55138909A (en) 1979-04-18 1979-04-18 Gain adjusting circuit

Country Status (1)

Country Link
JP (1) JPS55138909A (ja)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59204394A (ja) * 1983-04-29 1984-11-19 アグフア−ゲヴエルト・アクチエンゲゼルシヤフト カラ−信号の色飽和度を調整するための方法及びカラ−ビデオプリント装置
JPS6139711A (ja) * 1984-07-31 1986-02-25 Nec Home Electronics Ltd コンピユ−タ制御システム
JPS6399413U (ja) * 1986-12-19 1988-06-28

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS51111036A (en) * 1975-03-26 1976-10-01 Sony Corp Transistor circuit

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS51111036A (en) * 1975-03-26 1976-10-01 Sony Corp Transistor circuit

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59204394A (ja) * 1983-04-29 1984-11-19 アグフア−ゲヴエルト・アクチエンゲゼルシヤフト カラ−信号の色飽和度を調整するための方法及びカラ−ビデオプリント装置
JPS6139711A (ja) * 1984-07-31 1986-02-25 Nec Home Electronics Ltd コンピユ−タ制御システム
JPH0318765B2 (ja) * 1984-07-31 1991-03-13 Nippon Denki Hoomu Erekutoronikusu Kk
JPS6399413U (ja) * 1986-12-19 1988-06-28
JPH0411380Y2 (ja) * 1986-12-19 1992-03-23

Also Published As

Publication number Publication date
JPS6311839B2 (ja) 1988-03-16

Similar Documents

Publication Publication Date Title
JPS5753112A (en) Sepp power amplifier
ES448125A1 (es) Perfeccionamientos en disposiciones para el control de ga- nancia en sistemas de relacion de senales de television en color.
JPS55138909A (en) Gain adjusting circuit
JPS5482157A (en) Electronic switch circuit
US3139535A (en) Variable pulse width circuit
JPS574610A (en) Automatic gain controlling circuit
SU1589381A1 (ru) Усилитель с электронной регулировкой коэффициента передачи
JPS57111112A (en) Variable gain amplifier
GB873564A (en) Circuit with transistors for wide-band amplification
JPS5434740A (en) Automatic gain control circuit
SU1195417A1 (ru) Управл емый делитель напр жени
JPH01300608A (ja) 増幅回路
SU483765A2 (ru) Устройство автоматической регулировки усилени многоканального приемника
JPS57133707A (en) Bias circuit for power amplifier
JPS56107638A (en) Current switch circuit
JPS5753109A (en) Protecting circuit for amplifier
SU414706A1 (ja)
JPS577680A (en) Automatic picture-quality regulator
JPS56156006A (en) Current miller circuit
UST953012I4 (en) Current amplifier
JPS575479A (en) Luminance adjusting circuit
JPS562719A (en) f agc amplifying circuit
JPS6439818A (en) Switching circuit
EP0210067A3 (en) Controlling a semi-conductor resistance defining component
GB1350985A (en) Chrominance channel circuit for adjusting the ratio between the transmission factors of the channel for a picture content signal and a burst signal