FR2262807A1 - Electrical voltage integration method - uses count of switching of voltage from constant current source - Google Patents

Electrical voltage integration method - uses count of switching of voltage from constant current source

Info

Publication number
FR2262807A1
FR2262807A1 FR7407520A FR7407520A FR2262807A1 FR 2262807 A1 FR2262807 A1 FR 2262807A1 FR 7407520 A FR7407520 A FR 7407520A FR 7407520 A FR7407520 A FR 7407520A FR 2262807 A1 FR2262807 A1 FR 2262807A1
Authority
FR
France
Prior art keywords
voltage
output
switching
current source
constant current
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Withdrawn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
FR7407520A
Other languages
French (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.)
FAYOLLE AIME FR
Original Assignee
FAYOLLE AIME FR
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 FAYOLLE AIME FR filed Critical FAYOLLE AIME FR
Priority to FR7407520A priority Critical patent/FR2262807A1/en
Publication of FR2262807A1 publication Critical patent/FR2262807A1/en
Withdrawn legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K7/00—Modulating pulses with a continuously-variable modulating signal
    • H03K7/06—Frequency or rate modulation, i.e. PFM or PRM
    • 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
    • G01R19/0046—Arrangements for measuring currents or voltages or for indicating presence or sign thereof characterised by a specific application or detail not covered by any other subgroup of G01R19/00
    • G01R19/0053—Noise discrimination; Analog sampling; Measuring transients
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
    • H03M1/00—Analogue/digital conversion; Digital/analogue conversion
    • 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
    • H03M1/14—Conversion in steps with each step involving the same or a different conversion means and delivering more than one bit

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Analogue/Digital Conversion (AREA)

Abstract

A voltage (U(t)) to be integrated is applied to a voltage divider (R1, R'1) with a capacitor (C1) at the output to obtain an input voltage (V1(t)) for a comparator (2). A sawtooth voltage (V2(t)) is obtained from a switched current generator (1). The comparator output (S) is applied to a logic level convertor (3) whose output (D) is applied to a D-type flip flop (5) with a clock (4) input (T). The flip-flop controls a switch (6) in the current generator output. The counting circuit (7) comprises an AND gate (8) with inputs from the clock (T) and flip flop (Q). The output is divided (9) for counting (10) and display (11).
FR7407520A 1974-02-28 1974-02-28 Electrical voltage integration method - uses count of switching of voltage from constant current source Withdrawn FR2262807A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7407520A FR2262807A1 (en) 1974-02-28 1974-02-28 Electrical voltage integration method - uses count of switching of voltage from constant current source

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7407520A FR2262807A1 (en) 1974-02-28 1974-02-28 Electrical voltage integration method - uses count of switching of voltage from constant current source

Publications (1)

Publication Number Publication Date
FR2262807A1 true FR2262807A1 (en) 1975-09-26

Family

ID=9135884

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7407520A Withdrawn FR2262807A1 (en) 1974-02-28 1974-02-28 Electrical voltage integration method - uses count of switching of voltage from constant current source

Country Status (1)

Country Link
FR (1) FR2262807A1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2346907A2 (en) * 1974-03-05 1977-10-28 Int Standard Electric Corp A:D converter producing stream of pulses
EP0452609A1 (en) 1990-04-19 1991-10-23 Austria Mikro Systeme International Aktiengesellschaft High resolution monolithic integrated analog-digital converter

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2346907A2 (en) * 1974-03-05 1977-10-28 Int Standard Electric Corp A:D converter producing stream of pulses
EP0452609A1 (en) 1990-04-19 1991-10-23 Austria Mikro Systeme International Aktiengesellschaft High resolution monolithic integrated analog-digital converter
US5148170A (en) * 1990-04-19 1992-09-15 Austria Mikro Systeme Internationale Gesellschaft M.B.H. High resolution analogue-to-digital converter

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Legal Events

Date Code Title Description
ST Notification of lapse