FR2408242A1 - Dispositif electronique attenuateur a elements actifs dont l'affaiblissement est commande par une tension continue - Google Patents

Dispositif electronique attenuateur a elements actifs dont l'affaiblissement est commande par une tension continue

Info

Publication number
FR2408242A1
FR2408242A1 FR7734365A FR7734365A FR2408242A1 FR 2408242 A1 FR2408242 A1 FR 2408242A1 FR 7734365 A FR7734365 A FR 7734365A FR 7734365 A FR7734365 A FR 7734365A FR 2408242 A1 FR2408242 A1 FR 2408242A1
Authority
FR
France
Prior art keywords
logarithmic
series
amplifier
function generators
exponential function
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.)
Withdrawn
Application number
FR7734365A
Other languages
English (en)
Inventor
Pierre Boissy
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.)
TELEVIC
Original Assignee
TELEVIC
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 TELEVIC filed Critical TELEVIC
Priority to FR7734365A priority Critical patent/FR2408242A1/fr
Publication of FR2408242A1 publication Critical patent/FR2408242A1/fr
Priority to FR7927885A priority patent/FR2469825A2/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03G—CONTROL OF AMPLIFICATION
    • H03G3/00—Gain control in amplifiers or frequency changers
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06G—ANALOGUE COMPUTERS
    • G06G7/00—Devices in which the computing operation is performed by varying electric or magnetic quantities
    • G06G7/12—Arrangements for performing computing operations, e.g. operational amplifiers
    • G06G7/24—Arrangements for performing computing operations, e.g. operational amplifiers for evaluating logarithmic or exponential functions, e.g. hyperbolic functions
    • 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

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Mathematical Physics (AREA)
  • Theoretical Computer Science (AREA)
  • Software Systems (AREA)
  • Computer Hardware Design (AREA)
  • General Physics & Mathematics (AREA)
  • Control Of Amplification And Gain Control (AREA)
  • Amplifiers (AREA)
  • Tone Control, Compression And Expansion, Limiting Amplitude (AREA)

Abstract

DISPOSITIF ATTENUATEUR OU AMPLIFICATEUR CARACTERISE PAR LA COMBINAISON DE DEUX GENERATEURS ELECTRIQUES DE FONCTION RESPECTIVEMENT LOGARITHMIQUE ET EXPONENTIELLE, MONTES EN SERIE DONT LE SECOND EST AGENCE POUR ENGENDRER L'EXPONENTIELLE DE LA DIFFERENCE ENTRE UNE TENSION CONTINUE DE COMMANDE ET LA TENSION DE SORTIE DU PREMIER GENERATEUR. APPLICATION AUX PUPITRES DE MODULATION EN RADIODIFFUSION.
FR7734365A 1977-11-08 1977-11-08 Dispositif electronique attenuateur a elements actifs dont l'affaiblissement est commande par une tension continue Withdrawn FR2408242A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
FR7734365A FR2408242A1 (fr) 1977-11-08 1977-11-08 Dispositif electronique attenuateur a elements actifs dont l'affaiblissement est commande par une tension continue
FR7927885A FR2469825A2 (fr) 1977-11-08 1979-11-13 Dispositif electronique attenuateur a elements actifs dont l'affaiblissement est commande par une tension continue

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7734365A FR2408242A1 (fr) 1977-11-08 1977-11-08 Dispositif electronique attenuateur a elements actifs dont l'affaiblissement est commande par une tension continue

Publications (1)

Publication Number Publication Date
FR2408242A1 true FR2408242A1 (fr) 1979-06-01

Family

ID=9197644

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7734365A Withdrawn FR2408242A1 (fr) 1977-11-08 1977-11-08 Dispositif electronique attenuateur a elements actifs dont l'affaiblissement est commande par une tension continue

Country Status (1)

Country Link
FR (1) FR2408242A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL8300169A (nl) * 1982-01-19 1983-08-16 Dbx Versterker.

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2163011A5 (fr) * 1971-11-23 1973-07-20 Honeywell Inf Systems

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2163011A5 (fr) * 1971-11-23 1973-07-20 Honeywell Inf Systems

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
'HEWLETT-PACKARD JOURNAL', vol. 24, no. 7, mars 1973, PALO ALTO (USA), D.H. SMITH: 'High Performance Flame-Ionization Detector System for Gas Chromatography', pages 2 à 10 *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL8300169A (nl) * 1982-01-19 1983-08-16 Dbx Versterker.

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Legal Events

Date Code Title Description
CD Change of name or company name
ST Notification of lapse