DE3021788A1 - Integrierte spannungsgesteuerte schaltung veraenderbarer verstaerkung sowie diese verwendende signaluebertragungsschaltung - Google Patents

Integrierte spannungsgesteuerte schaltung veraenderbarer verstaerkung sowie diese verwendende signaluebertragungsschaltung

Info

Publication number
DE3021788A1
DE3021788A1 DE19803021788 DE3021788A DE3021788A1 DE 3021788 A1 DE3021788 A1 DE 3021788A1 DE 19803021788 DE19803021788 DE 19803021788 DE 3021788 A DE3021788 A DE 3021788A DE 3021788 A1 DE3021788 A1 DE 3021788A1
Authority
DE
Germany
Prior art keywords
circuit
input terminal
outside
operational amplifier
inverting input
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.)
Ceased
Application number
DE19803021788
Other languages
German (de)
English (en)
Inventor
Tetsuo Sato
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
Publication of DE3021788A1 publication Critical patent/DE3021788A1/de
Ceased 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
    • H03G1/0017—Circuits characterised by the type of controlling devices operated by a controlling current or voltage signal the device being at least one of the amplifying solid-state elements
    • H03G1/0023—Circuits characterised by the type of controlling devices operated by a controlling current or voltage signal the device being at least one of the amplifying solid-state elements in emitter-coupled or cascode amplifiers
    • 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
    • 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
    • H03G1/0088—Circuits characterised by the type of controlling devices operated by a controlling current or voltage signal using discontinuously variable devices, e.g. switch-operated
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03G—CONTROL OF AMPLIFICATION
    • H03G1/00—Details of arrangements for controlling amplification
    • H03G1/04—Modifications of control circuit to reduce distortion caused by control
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03G—CONTROL OF AMPLIFICATION
    • H03G3/00—Gain control in amplifiers or frequency changers
    • H03G3/02—Manually-operated control

Landscapes

  • Control Of Amplification And Gain Control (AREA)
  • Amplifiers (AREA)
DE19803021788 1979-06-11 1980-06-10 Integrierte spannungsgesteuerte schaltung veraenderbarer verstaerkung sowie diese verwendende signaluebertragungsschaltung Ceased DE3021788A1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7229079A JPS55165009A (en) 1979-06-11 1979-06-11 Signal transmission circuit

Publications (1)

Publication Number Publication Date
DE3021788A1 true DE3021788A1 (de) 1980-12-18

Family

ID=13484987

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19803021788 Ceased DE3021788A1 (de) 1979-06-11 1980-06-10 Integrierte spannungsgesteuerte schaltung veraenderbarer verstaerkung sowie diese verwendende signaluebertragungsschaltung

Country Status (8)

Country Link
US (1) US4366449A (enExample)
JP (1) JPS55165009A (enExample)
DE (1) DE3021788A1 (enExample)
GB (1) GB2053598B (enExample)
HK (1) HK37385A (enExample)
IT (1) IT1209231B (enExample)
MY (1) MY8500833A (enExample)
SG (1) SG63184G (enExample)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3129754A1 (de) * 1980-07-28 1982-06-24 Sony Corp., Tokyo Verstaerkerregler
EP0087175A1 (de) * 1982-02-08 1983-08-31 Philips Patentverwaltung GmbH Schaltung zur elektronischen Verstärkungsstellung
DE3525655C1 (de) * 1985-07-18 1986-11-27 ANT Nachrichtentechnik GmbH, 7150 Backnang Verstaerker fuer erdsymmetrische,elektrische Signale,mit Kompressor- und/oder Expanderfunktion
EP0594074A1 (de) * 1992-10-22 1994-04-27 NOKIA TECHNOLOGY GmbH Stellbarer elektronischer Widerstand

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3024142A1 (de) * 1980-06-27 1982-01-21 Philips Patentverwaltung Gmbh, 2000 Hamburg Schaltungsanordnung mit zwei ueber kreuz gekoppelten differenzverstaerkern
JPS6434008A (en) * 1987-07-30 1989-02-03 Matsushita Electric Industrial Co Ltd Device for negating distortion in voltage controlled amplifier
DK0822656T3 (da) * 1996-07-25 1999-07-05 Kavlico Corp Kredsløb med operationsforstærker
US5949288A (en) * 1996-07-25 1999-09-07 Endress + Hauser Gmbh + Co. Circuit arrangement with an operational amplifier
US11524350B1 (en) * 2021-10-04 2022-12-13 General Electric Company Backwall strike braze repair

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3197710A (en) * 1963-05-31 1965-07-27 Westinghouse Electric Corp Complementary transistor structure
JPS48101859A (enExample) * 1972-04-03 1973-12-21
US4155047A (en) * 1978-01-11 1979-05-15 Baskind David Lee Voltage controlled attenuator

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3197710A (en) * 1963-05-31 1965-07-27 Westinghouse Electric Corp Complementary transistor structure
JPS48101859A (enExample) * 1972-04-03 1973-12-21
US4155047A (en) * 1978-01-11 1979-05-15 Baskind David Lee Voltage controlled attenuator

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3129754A1 (de) * 1980-07-28 1982-06-24 Sony Corp., Tokyo Verstaerkerregler
EP0087175A1 (de) * 1982-02-08 1983-08-31 Philips Patentverwaltung GmbH Schaltung zur elektronischen Verstärkungsstellung
DE3525655C1 (de) * 1985-07-18 1986-11-27 ANT Nachrichtentechnik GmbH, 7150 Backnang Verstaerker fuer erdsymmetrische,elektrische Signale,mit Kompressor- und/oder Expanderfunktion
EP0594074A1 (de) * 1992-10-22 1994-04-27 NOKIA TECHNOLOGY GmbH Stellbarer elektronischer Widerstand
US5719518A (en) * 1992-10-22 1998-02-17 Nokia Technology Gmbh Variable electronic resistor having parallel phase-inverted variable semiconductor channels with common control input and current-to-voltage converters

Also Published As

Publication number Publication date
HK37385A (en) 1985-05-24
GB2053598B (en) 1983-12-14
JPS55165009A (en) 1980-12-23
US4366449A (en) 1982-12-28
IT8022665A0 (it) 1980-06-09
MY8500833A (en) 1985-12-31
JPS6217891B2 (enExample) 1987-04-20
IT1209231B (it) 1989-07-16
SG63184G (en) 1985-09-13
GB2053598A (en) 1981-02-04

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Legal Events

Date Code Title Description
OAR Request for search filed
OB Request for examination as to novelty
8110 Request for examination paragraph 44
8131 Rejection