FR2390770A1 - Dispositif pour fournir un signal electrique de valeur a peu pres proportionnelle a la frequence d'un signal d'entree - Google Patents

Dispositif pour fournir un signal electrique de valeur a peu pres proportionnelle a la frequence d'un signal d'entree

Info

Publication number
FR2390770A1
FR2390770A1 FR7814189A FR7814189A FR2390770A1 FR 2390770 A1 FR2390770 A1 FR 2390770A1 FR 7814189 A FR7814189 A FR 7814189A FR 7814189 A FR7814189 A FR 7814189A FR 2390770 A1 FR2390770 A1 FR 2390770A1
Authority
FR
France
Prior art keywords
digital
feedback path
gain amplifier
frequency
conversion circuit
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Withdrawn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
FR7814189A
Other languages
English (en)
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.)
ZF International UK Ltd
Original Assignee
Lucas 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 Lucas Industries Ltd filed Critical Lucas Industries Ltd
Publication of FR2390770A1 publication Critical patent/FR2390770A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R23/00—Arrangements for measuring frequencies; Arrangements for analysing frequency spectra
    • G01R23/02—Arrangements for measuring frequency, e.g. pulse repetition rate; Arrangements for measuring period of current or voltage
    • G01R23/10—Arrangements for measuring frequency, e.g. pulse repetition rate; Arrangements for measuring period of current or voltage by converting frequency into a train of pulses, which are then counted, i.e. converting the signal into a square wave

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Control Of Amplification And Gain Control (AREA)
  • Analogue/Digital Conversion (AREA)

Abstract

Ce dispositif comprend des moyens de comptage d'impulsions comprenant un générateur il d'impulsions d'horloge et un compteur numérique 13 avec un circuit de commande 10 qui commande le dispositif de comptage d'impulsions de telle sorte que le compteur 13 compte le nombre d'impulsions produites par le générateur il au cours de périodes successives qui sont inversement proportionnelles à la fréquence du signal d'entrée. Le dispositif comprend également un convertisseur numérique/analogique 15 qui convertit en un signal électrique, le nombre d'impulsions comptées par le compteur numérique.
FR7814189A 1977-05-14 1978-05-12 Dispositif pour fournir un signal electrique de valeur a peu pres proportionnelle a la frequence d'un signal d'entree Withdrawn FR2390770A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2037877 1977-05-14

Publications (1)

Publication Number Publication Date
FR2390770A1 true FR2390770A1 (fr) 1978-12-08

Family

ID=10144971

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7814189A Withdrawn FR2390770A1 (fr) 1977-05-14 1978-05-12 Dispositif pour fournir un signal electrique de valeur a peu pres proportionnelle a la frequence d'un signal d'entree

Country Status (5)

Country Link
JP (1) JPS53141563A (fr)
DE (1) DE2820362A1 (fr)
ES (1) ES469472A1 (fr)
FR (1) FR2390770A1 (fr)
IT (1) IT1113177B (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2458815A1 (fr) * 1979-06-12 1981-01-02 Alsthom Atlantique Procede et dispositif de mesure digitale d'une frequence par inversion de periode

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3048015C2 (de) * 1979-12-21 1986-07-03 Deutsche Zähler-Gesellschaft Nachf. A. Stepper & Co (GmbH & Co), 2000 Hamburg Korrekturschaltung für Elektrizitäts- und Wärmemengenzähler mit elektronischem Meßwerk
JPH02194731A (ja) * 1989-01-24 1990-08-01 Yokogawa Electric Corp Ｆ／ｖコンバータ

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
EXBK/69 *
NV59/73 *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2458815A1 (fr) * 1979-06-12 1981-01-02 Alsthom Atlantique Procede et dispositif de mesure digitale d'une frequence par inversion de periode

Also Published As

Publication number Publication date
DE2820362A1 (de) 1978-11-23
ES469472A1 (es) 1979-03-16
IT7823331A0 (it) 1978-05-12
JPS53141563A (en) 1978-12-09
IT1113177B (it) 1986-01-20

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Legal Events

Date Code Title Description
ST Notification of lapse