FR2261532A1 - - Google Patents

Info

Publication number
FR2261532A1
FR2261532A1 FR7504972A FR7504972A FR2261532A1 FR 2261532 A1 FR2261532 A1 FR 2261532A1 FR 7504972 A FR7504972 A FR 7504972A FR 7504972 A FR7504972 A FR 7504972A FR 2261532 A1 FR2261532 A1 FR 2261532A1
Authority
FR
France
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
FR7504972A
Other versions
FR2261532B1 (fr
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.)
Siemens AG
Original Assignee
Siemens AG
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
Priority claimed from DE19742407968 external-priority patent/DE2407968C2/de
Application filed by Siemens AG filed Critical Siemens AG
Publication of FR2261532A1 publication Critical patent/FR2261532A1/fr
Application granted granted Critical
Publication of FR2261532B1 publication Critical patent/FR2261532B1/fr
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R19/00—Arrangements for measuring currents or voltages or for indicating presence or sign thereof
    • G01R19/25—Arrangements for measuring currents or voltages or for indicating presence or sign thereof using digital measurement techniques
    • G01R19/255—Arrangements for measuring currents or voltages or for indicating presence or sign thereof using digital measurement techniques using analogue/digital converters of the type with counting of pulses during a period of time proportional to voltage or current, delivered by a pulse generator with fixed frequency
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
    • H03M1/00—Analogue/digital conversion; Digital/analogue conversion
    • H03M1/12—Analogue/digital converters
    • H03M1/18—Automatic control for modifying the range of signals the converter can handle, e.g. gain ranging
    • H03M1/181—Automatic control for modifying the range of signals the converter can handle, e.g. gain ranging in feedback mode, i.e. by determining the range to be selected from one or more previous digital output values
    • H03M1/182—Automatic control for modifying the range of signals the converter can handle, e.g. gain ranging in feedback mode, i.e. by determining the range to be selected from one or more previous digital output values the feedback signal controlling the reference levels of the analogue/digital converter

Landscapes

  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Measurement Of Current Or Voltage (AREA)
  • Analogue/Digital Conversion (AREA)
FR7504972A 1974-02-19 1975-02-18 Expired FR2261532B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19742407968 DE2407968C2 (de) 1974-02-19 Digitaler Spannungspegelmesser

Publications (2)

Publication Number Publication Date
FR2261532A1 true FR2261532A1 (fr) 1975-09-12
FR2261532B1 FR2261532B1 (fr) 1979-10-19

Family

ID=5907842

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7504972A Expired FR2261532B1 (fr) 1974-02-19 1975-02-18

Country Status (4)

Country Link
US (1) US3999123A (fr)
FR (1) FR2261532B1 (fr)
GB (1) GB1487687A (fr)
IT (1) IT1031630B (fr)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5936229B2 (ja) * 1975-06-26 1984-09-03 エプソン株式会社 基準電圧装置
US4077035A (en) * 1976-05-10 1978-02-28 International Business Machines Corporation Two-stage weighted capacitor circuit for analog-to-digital and digital-to-analog converters
US4087796A (en) * 1976-10-21 1978-05-02 Rockwell International Corporation Analog-to-digital conversion apparatus
US4160134A (en) * 1977-08-25 1979-07-03 International Telephone And Telegraph Corporation Digital signal level measurement
US4117722A (en) * 1977-11-14 1978-10-03 Honeywell Inc. Measuring apparatus providing separate analog and digital outputs
JPS5920860A (ja) * 1982-07-28 1984-02-02 Hitachi Ltd 光伝送体による情報検知方法
US4605920A (en) * 1983-03-02 1986-08-12 Beckman Instruments, Inc. Prescaling device and method
DE3425212A1 (de) * 1984-07-09 1986-01-16 Vdo Adolf Schindling Ag, 6000 Frankfurt Fuellstandsanzeige
JPH02202721A (ja) * 1989-02-01 1990-08-10 Sony Corp 信号レベル検出回路
DE4034698A1 (de) * 1990-10-31 1992-05-14 Fraunhofer Ges Forschung Spannungs-frequenz-wandler und widerstands-frequenz-wandler
US6348798B1 (en) 2000-12-05 2002-02-19 Alpha Smart, Inc. Analog to digital voltage measuring device
US20110267068A1 (en) * 2010-05-03 2011-11-03 Jian Xu Energy storage level indication circuit

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3566265A (en) * 1968-11-18 1971-02-23 Time Systems Corp Compensated step ramp digital voltmeter

Also Published As

Publication number Publication date
FR2261532B1 (fr) 1979-10-19
DE2407968B1 (de) 1975-07-03
US3999123A (en) 1976-12-21
DE2407968A1 (fr) 1975-07-03
IT1031630B (it) 1979-05-10
GB1487687A (en) 1977-10-05

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Legal Events

Date Code Title Description
ST Notification of lapse