GB1400565A - Analogue-to-digital converters - Google Patents

Analogue-to-digital converters

Info

Publication number
GB1400565A
GB1400565A GB3776172A GB3776172A GB1400565A GB 1400565 A GB1400565 A GB 1400565A GB 3776172 A GB3776172 A GB 3776172A GB 3776172 A GB3776172 A GB 3776172A GB 1400565 A GB1400565 A GB 1400565A
Authority
GB
United Kingdom
Prior art keywords
switches
earth
voltage
zener diode
zener
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.)
Expired
Application number
GB3776172A
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.)
Schlumberger Instruments et Systemes SA
Original Assignee
Schlumberger Instruments et Systemes SA
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 Schlumberger Instruments et Systemes SA filed Critical Schlumberger Instruments et Systemes SA
Publication of GB1400565A publication Critical patent/GB1400565A/en
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
    • 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
    • H03M1/50—Analogue/digital converters with intermediate conversion to time interval

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Analogue/Digital Conversion (AREA)
GB3776172A 1971-08-12 1972-08-14 Analogue-to-digital converters Expired GB1400565A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7129508A FR2148376B1 (enExample) 1971-08-12 1971-08-12

Publications (1)

Publication Number Publication Date
GB1400565A true GB1400565A (en) 1975-07-16

Family

ID=9081799

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3776172A Expired GB1400565A (en) 1971-08-12 1972-08-14 Analogue-to-digital converters

Country Status (2)

Country Link
FR (1) FR2148376B1 (enExample)
GB (1) GB1400565A (enExample)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0148296A1 (de) * 1984-01-09 1985-07-17 Leybold Aktiengesellschaft Verfahren und Schaltung zur Umwandlung eines Messstromes in eine dem Messstrom proportionale Impulsrate
US4939519A (en) * 1986-02-03 1990-07-03 Thaler Corporation Apparatus for method and a high precision analog-to-digital converter

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4549149A (en) * 1983-04-08 1985-10-22 Warner-Lambert Technologies, Inc. Current to frequency converter switched to increased frequency when current input low

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0148296A1 (de) * 1984-01-09 1985-07-17 Leybold Aktiengesellschaft Verfahren und Schaltung zur Umwandlung eines Messstromes in eine dem Messstrom proportionale Impulsrate
US4939519A (en) * 1986-02-03 1990-07-03 Thaler Corporation Apparatus for method and a high precision analog-to-digital converter

Also Published As

Publication number Publication date
FR2148376A1 (enExample) 1973-03-23
FR2148376B1 (enExample) 1975-04-18

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee