FR2412200A1 - Dispositif de commutation dont la caracteristique de frequence peut etre variee a l'aide d'une tension continue de commande - Google Patents

Dispositif de commutation dont la caracteristique de frequence peut etre variee a l'aide d'une tension continue de commande

Info

Publication number
FR2412200A1
FR2412200A1 FR7835356A FR7835356A FR2412200A1 FR 2412200 A1 FR2412200 A1 FR 2412200A1 FR 7835356 A FR7835356 A FR 7835356A FR 7835356 A FR7835356 A FR 7835356A FR 2412200 A1 FR2412200 A1 FR 2412200A1
Authority
FR
France
Prior art keywords
amplification
frequency characteristic
switching device
varied
control voltage
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
FR7835356A
Other languages
English (en)
French (fr)
Other versions
FR2412200B1 (de
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.)
Koninklijke Philips NV
Original Assignee
Philips Gloeilampenfabrieken NV
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 Philips Gloeilampenfabrieken NV filed Critical Philips Gloeilampenfabrieken NV
Publication of FR2412200A1 publication Critical patent/FR2412200A1/fr
Application granted granted Critical
Publication of FR2412200B1 publication Critical patent/FR2412200B1/fr
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
    • 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 of the amplifier
    • 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 of the amplifier in emitter-coupled or cascode amplifiers
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03G—CONTROL OF AMPLIFICATION
    • H03G9/00—Combinations of two or more types of control, e.g. gain control and tone control
    • H03G9/02—Combinations of two or more types of control, e.g. gain control and tone control in untuned amplifiers
    • H03G9/12—Combinations of two or more types of control, e.g. gain control and tone control in untuned amplifiers having semiconductor devices
    • H03G9/14—Combinations of two or more types of control, e.g. gain control and tone control in untuned amplifiers having semiconductor devices for gain control and tone control
    • H03G9/16—Combinations of two or more types of control, e.g. gain control and tone control in untuned amplifiers having semiconductor devices for gain control and tone control incorporating negative feedback

Landscapes

  • Control Of Amplification And Gain Control (AREA)
  • Tone Control, Compression And Expansion, Limiting Amplitude (AREA)
  • Networks Using Active Elements (AREA)
  • Amplifiers (AREA)
FR7835356A 1977-12-15 1978-12-15 Dispositif de commutation dont la caracteristique de frequence peut etre variee a l'aide d'une tension continue de commande Granted FR2412200A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19772755827 DE2755827A1 (de) 1977-12-15 1977-12-15 Schaltungsanordnung mit einem durch eine steuergleichspannung veraenderbaren frequenzgang

Publications (2)

Publication Number Publication Date
FR2412200A1 true FR2412200A1 (fr) 1979-07-13
FR2412200B1 FR2412200B1 (de) 1984-03-23

Family

ID=6026151

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7835356A Granted FR2412200A1 (fr) 1977-12-15 1978-12-15 Dispositif de commutation dont la caracteristique de frequence peut etre variee a l'aide d'une tension continue de commande

Country Status (5)

Country Link
JP (1) JPS5489551A (de)
AT (1) AT376078B (de)
DE (1) DE2755827A1 (de)
FR (1) FR2412200A1 (de)
GB (1) GB2010616B (de)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2465369A1 (fr) * 1979-09-13 1981-03-20 Thomson Csf Circuit melangeur et circuit de commande de volume et de tonalite de signal a frequence sonore utilisant un circuit melangeur
DE3026551A1 (de) * 1980-07-12 1982-02-04 Philips Patentverwaltung Gmbh, 2000 Hamburg Verstaerkerschaltung
US4471320A (en) * 1981-05-27 1984-09-11 Frey Douglas R Voltage controlled element
US4528515A (en) * 1983-02-07 1985-07-09 Tektronix, Inc. High frequency differential amplifier with adjustable damping factor
US4563670A (en) * 1983-12-14 1986-01-07 Tektronix, Inc. High speed multiplying digital to analog converter
ATE49687T1 (de) * 1984-06-07 1990-02-15 Siemens Ag Differenzverstaerkerschaltung.

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2210861A1 (de) * 1972-12-19 1974-07-12 Philips Nv

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2210861A1 (de) * 1972-12-19 1974-07-12 Philips Nv

Also Published As

Publication number Publication date
FR2412200B1 (de) 1984-03-23
GB2010616B (en) 1982-04-21
JPS5489551A (en) 1979-07-16
GB2010616A (en) 1979-06-27
AT376078B (de) 1984-10-10
DE2755827A1 (de) 1979-06-21
ATA898778A (de) 1984-02-15

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Legal Events

Date Code Title Description
ST Notification of lapse