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Study and achievement of a digital-analog-divider; Etude et realisation d'un diviseur-analogique-numerique

Abstract

This apparatus is designed to give directly, in digital form, the value of the ratio Vt1/V2 two analog voltages. It consists essentially of an analog-digital coder operating by successive weighing; the comparison voltage is made proportional to the divider V2 in the coder. The input dynamics are such that the voltages Vi and V2 are all in the range -50 mV to -5 V. Each of the circuits has an input impedance of about 10 K{omega}. As for the quotient, it is a binary number given in series and parallel form; it is made up of 8 bits, this giving a change of 1/16 to 16 per jump of 1/16 in the zone where the accuracy is highest (V2 {>=} 800 mV). The time required for a division is, at best, 15 {mu}sec. During the time of calculation, the voltages V{sub 1} and V{sub 2} should not vary by more than 1 per cent and 0.5 per cent respectively. The theory of the system and the investigation of a synoptic diagram, the study of the circuits and the actual construction are presented. (author) [French] Cet appareil est destine a fournir directement sous forme numerique la valeur du rapport V1/V2 de  More>>
Authors:
Petin, A [1] 
  1. Commissariat a l'Energie Atomique, Cadarache (France). Centre d'Etudes Nucleaires
Publication Date:
Apr 01, 1969
Product Type:
Thesis/Dissertation
Report Number:
CEA-R-3648
Resource Relation:
Other Information: TH: These CNAM mention radioelectricite; 13 refs; PBD: Apr 1969
Subject:
46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY; ANALOG-TO-DIGITAL CONVERTERS; DESIGN; ELECTRIC POTENTIAL; ELECTRONIC CIRCUITS; PERFORMANCE; WEIGHT
OSTI ID:
20528678
Research Organizations:
CEA Cadarache, 13 - Saint-Paul-lez-Durance (France)
Country of Origin:
France
Language:
French
Other Identifying Numbers:
TRN: FR04R3648094944
Availability:
Available from INIS in electronic form
Submitting Site:
FRN
Size:
[110] pages
Announcement Date:
Dec 10, 2004

Citation Formats

Petin, A. Study and achievement of a digital-analog-divider; Etude et realisation d'un diviseur-analogique-numerique. France: N. p., 1969. Web.
Petin, A. Study and achievement of a digital-analog-divider; Etude et realisation d'un diviseur-analogique-numerique. France.
Petin, A. 1969. "Study and achievement of a digital-analog-divider; Etude et realisation d'un diviseur-analogique-numerique." France.
@misc{etde_20528678,
title = {Study and achievement of a digital-analog-divider; Etude et realisation d'un diviseur-analogique-numerique}
author = {Petin, A}
abstractNote = {This apparatus is designed to give directly, in digital form, the value of the ratio Vt1/V2 two analog voltages. It consists essentially of an analog-digital coder operating by successive weighing; the comparison voltage is made proportional to the divider V2 in the coder. The input dynamics are such that the voltages Vi and V2 are all in the range -50 mV to -5 V. Each of the circuits has an input impedance of about 10 K{omega}. As for the quotient, it is a binary number given in series and parallel form; it is made up of 8 bits, this giving a change of 1/16 to 16 per jump of 1/16 in the zone where the accuracy is highest (V2 {>=} 800 mV). The time required for a division is, at best, 15 {mu}sec. During the time of calculation, the voltages V{sub 1} and V{sub 2} should not vary by more than 1 per cent and 0.5 per cent respectively. The theory of the system and the investigation of a synoptic diagram, the study of the circuits and the actual construction are presented. (author) [French] Cet appareil est destine a fournir directement sous forme numerique la valeur du rapport V1/V2 de deux tensions analogiques. Il est constitue essentiellement d'un codeur analogique-numerique fonctionnant par pesees successives dans lequel la tension de reference est rendue proportionnelle au diviseur V2. La dynamique d'entree est telle que les tensions V1 et V2 peuvent etre comprises dans l'intervalle -50 mV a -5 V. Chacune des voies presente une impedance d'entree d'environ 10 K{omega}. En ce qui concerne le quotient, c'est un nombre binaire delivre sous les formes serie et parallele ; il est compose de 8 bits, ce qui donne une variation de 1/16 a 16 par bond de 1/16 dans la zone de meilleure precision (V2 {>=} 800 mV). Le temps necessaire pour effectuer la division est au mieux de 15 {mu}s. Durant le temps de calcul les tensions V{sub 1} et V{sub 2} ne doivent pas varier respectivement de plus de 1 pour cent et 0.5 pour cent. Apres avoir etabli la theorie du systeme, les paragraphes suivants presentent la recherche d'un schema synoptique, l'etude des circuits et la realisation. (auteur)}
place = {France}
year = {1969}
month = {Apr}
}