[go: up one dir, main page]
More Web Proxy on the site http://driver.im/

JPS54100645A - Automatic gain control circuit - Google Patents

Automatic gain control circuit

Info

Publication number
JPS54100645A
JPS54100645A JP709278A JP709278A JPS54100645A JP S54100645 A JPS54100645 A JP S54100645A JP 709278 A JP709278 A JP 709278A JP 709278 A JP709278 A JP 709278A JP S54100645 A JPS54100645 A JP S54100645A
Authority
JP
Japan
Prior art keywords
control circuit
gain control
automatic gain
pin diode
amplifier
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
JP709278A
Other languages
Japanese (ja)
Inventor
Kazuo Ohashi
Masaru Ikeuchi
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.)
Sumitomo Electric Industries Ltd
Original Assignee
Sumitomo Electric Industries 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 Sumitomo Electric Industries Ltd filed Critical Sumitomo Electric Industries Ltd
Priority to JP709278A priority Critical patent/JPS54100645A/en
Publication of JPS54100645A publication Critical patent/JPS54100645A/en
Pending 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
    • H03G1/0035—Circuits characterised by the type of controlling devices operated by a controlling current or voltage signal using continuously variable impedance elements
    • H03G1/0052—Circuits characterised by the type of controlling devices operated by a controlling current or voltage signal using continuously variable impedance elements using diodes
    • H03G1/0058—PIN-diodes

Landscapes

  • Control Of Amplification And Gain Control (AREA)

Abstract

PURPOSE:To make it possible to obtain an output signal with a little distortion by controlling the gain of an amplifier by controlling the impedance of a PIN diode by applying the detection signal of a differential amplifier to the diode. CONSTITUTION:The amplifier circuit is composed of a differential amplifier circuit with PIN diode D connected between emitter of two transistor Trs Q1 and Q2. Then, its detection signal is applied to PIN diode D to control the impedance of the PIN diode, thereby changing the gain of the amplifier. Consequently, an output signal with a little distortion can be obtained.
JP709278A 1978-01-25 1978-01-25 Automatic gain control circuit Pending JPS54100645A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP709278A JPS54100645A (en) 1978-01-25 1978-01-25 Automatic gain control circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP709278A JPS54100645A (en) 1978-01-25 1978-01-25 Automatic gain control circuit

Publications (1)

Publication Number Publication Date
JPS54100645A true JPS54100645A (en) 1979-08-08

Family

ID=11656428

Family Applications (1)

Application Number Title Priority Date Filing Date
JP709278A Pending JPS54100645A (en) 1978-01-25 1978-01-25 Automatic gain control circuit

Country Status (1)

Country Link
JP (1) JPS54100645A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6388519B1 (en) * 1998-11-19 2002-05-14 Sony Corporation Multi-input differential amplifier circuit

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6388519B1 (en) * 1998-11-19 2002-05-14 Sony Corporation Multi-input differential amplifier circuit

Similar Documents

Publication Publication Date Title
JPS5245242A (en) Automatic gain control circuit
JPS54100645A (en) Automatic gain control circuit
JPS5546672A (en) Transistor amplifier circuit
JPS524757A (en) Amplifier
JPS5360546A (en) Amplifier
JPS5666916A (en) Automatic gain control circuit for burst signal
SE7506200L (en) REINFORCEMENT CONTROL CIRCUIT
JPS5226145A (en) Automatic gain adjustment circuit
GB875063A (en) Improvements in or relating to signal expanders
JPS5379453A (en) Automatic gain control system
JPS5447557A (en) Power amplifier
JPS53148379A (en) Gain control unit
JPS5437664A (en) Automatic gain adjusting circuit
JPS5769915A (en) Automatic gain control circuit
JPS5696516A (en) Gain adjusting circuit
JPS5371554A (en) Circuit supervisory amplifier circuit
JPS5556711A (en) Variable gain amplifing circuit
JPS5341963A (en) Negative feedback amplifier circuit
JPS52137238A (en) Gain control circuit
JPS53138261A (en) Integrated circuit device
JPS51117856A (en) Automatic gain control circuit
JPS5441053A (en) Gain control amplifier
JPS5573117A (en) Agc circuit
JPS5491034A (en) Variable attenuator circuit of voltage control type
JPS5728412A (en) Gain control circuit