JPS5552615A - Gain control circuit - Google Patents

Gain control circuit

Info

Publication number
JPS5552615A
JPS5552615A JP12653278A JP12653278A JPS5552615A JP S5552615 A JPS5552615 A JP S5552615A JP 12653278 A JP12653278 A JP 12653278A JP 12653278 A JP12653278 A JP 12653278A JP S5552615 A JPS5552615 A JP S5552615A
Authority
JP
Japan
Prior art keywords
signal
gain control
diodes
constitution
supplied
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
JP12653278A
Other languages
Japanese (ja)
Other versions
JPS616570B2 (en
Inventor
Tsutomu Niimura
Kyoichi Murakami
Akira Yamakoshi
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 JP12653278A priority Critical patent/JPS5552615A/en
Priority to CA000337220A priority patent/CA1134463A/en
Priority to AU51673/79A priority patent/AU524354B2/en
Priority to DE19792941321 priority patent/DE2941321A1/en
Priority to US06/083,858 priority patent/US4292597A/en
Priority to NL7907545A priority patent/NL191160C/en
Priority to GB7935343A priority patent/GB2035001B/en
Priority to SE7908475A priority patent/SE446680B/en
Priority to AT0667679A priority patent/AT380359B/en
Priority to BR7906564A priority patent/BR7906564A/en
Priority to FR7925495A priority patent/FR2438938A1/en
Publication of JPS5552615A publication Critical patent/JPS5552615A/en
Publication of JPS616570B2 publication Critical patent/JPS616570B2/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

  • Processing Of Color Television Signals (AREA)
  • Control Of Amplification And Gain Control (AREA)

Abstract

PURPOSE:To make a bias voltage source needless and make it possible to extend a dynamic range by a constitution where signals are processed as currents. CONSTITUTION:Signal voltage Vi is supplied to the connection point of diodes 14 and 15 after being converted to signal current is by resistor R1 and input impedance Zi at the view from the signal source side. At this time, differential signal currents I3-is/2 and I3+is/2 are supplied to diodes 14 and 17. Then, output voltage VO becomes equal to{RL/2(R1+re/2}.(I4/I3).Vi (however, re is the emitter resistance of transistors 19 and 20), and gain control can be performed by making one of constant-current sources 13 and 14, at least, variable.
JP12653278A 1978-10-13 1978-10-13 Gain control circuit Granted JPS5552615A (en)

Priority Applications (11)

Application Number Priority Date Filing Date Title
JP12653278A JPS5552615A (en) 1978-10-13 1978-10-13 Gain control circuit
CA000337220A CA1134463A (en) 1978-10-13 1979-10-09 Circuit for converting single-ended input signals to a pair of differential output signals
AU51673/79A AU524354B2 (en) 1978-10-13 1979-10-10 Differential amplifier
DE19792941321 DE2941321A1 (en) 1978-10-13 1979-10-11 CIRCUIT ARRANGEMENT FOR CONVERTING SINGLE-SIDED INPUT SIGNALS INTO A FEW DIFFERENTIAL OUTPUT SIGNALS
US06/083,858 US4292597A (en) 1978-10-13 1979-10-11 Circuit for converting single-ended input signals to a pair of differential output signals
NL7907545A NL191160C (en) 1978-10-13 1979-10-11 Circuit for converting a single input signal into at least one output signal.
GB7935343A GB2035001B (en) 1978-10-13 1979-10-11 Converting single-ended input signals to differential output signals
SE7908475A SE446680B (en) 1978-10-13 1979-10-12 CIRCUIT FOR CONVERSION OF AN UNBALANCED INPUT SIGNAL TO A PAIR OF DIFFERENTIAL OUTPUT SIGNALS
AT0667679A AT380359B (en) 1978-10-13 1979-10-12 CIRCUIT ARRANGEMENT FOR CONVERTING UNIPOLAR INPUT SIGNALS TO A FEW DIFFERENTIAL OUTPUT SIGNALS
BR7906564A BR7906564A (en) 1978-10-13 1979-10-12 CIRCUIT FOR CONVERTING UNILATERAL INPUT SIGNS INTO A PAIR OF DIFFERENTIAL OUTPUT SIGNS
FR7925495A FR2438938A1 (en) 1978-10-13 1979-10-12 CIRCUIT FOR CONVERTING AN ASYMMETRIC SIGNAL INTO A PAIR OF SYMMETRIC SIGNALS

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP12653278A JPS5552615A (en) 1978-10-13 1978-10-13 Gain control circuit

Publications (2)

Publication Number Publication Date
JPS5552615A true JPS5552615A (en) 1980-04-17
JPS616570B2 JPS616570B2 (en) 1986-02-27

Family

ID=14937525

Family Applications (1)

Application Number Title Priority Date Filing Date
JP12653278A Granted JPS5552615A (en) 1978-10-13 1978-10-13 Gain control circuit

Country Status (1)

Country Link
JP (1) JPS5552615A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58196706A (en) * 1982-05-11 1983-11-16 Matsushita Electric Ind Co Ltd Control circuit
JPS59198015A (en) * 1983-04-25 1984-11-09 Sony Corp Gain control circuit
JPS60229409A (en) * 1984-04-27 1985-11-14 Hitachi Ltd Variable gain circuit

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58196706A (en) * 1982-05-11 1983-11-16 Matsushita Electric Ind Co Ltd Control circuit
JPS59198015A (en) * 1983-04-25 1984-11-09 Sony Corp Gain control circuit
JPH057885B2 (en) * 1983-04-25 1993-01-29 Sony Corp
JPS60229409A (en) * 1984-04-27 1985-11-14 Hitachi Ltd Variable gain circuit

Also Published As

Publication number Publication date
JPS616570B2 (en) 1986-02-27

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