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GB1306967A - Analog-to-digital-converter - Google Patents

Analog-to-digital-converter

Info

Publication number
GB1306967A
GB1306967A GB2519770A GB2519770A GB1306967A GB 1306967 A GB1306967 A GB 1306967A GB 2519770 A GB2519770 A GB 2519770A GB 2519770 A GB2519770 A GB 2519770A GB 1306967 A GB1306967 A GB 1306967A
Authority
GB
United Kingdom
Prior art keywords
value
resistor
digital
analog
converter
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
GB2519770A
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.)
Societe dInstrumentation Schlumberger SA
Original Assignee
Societe dInstrumentation Schlumberger 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
Priority claimed from FR6917334A external-priority patent/FR2041678A5/fr
Priority claimed from FR6942066A external-priority patent/FR2069918B2/fr
Application filed by Societe dInstrumentation Schlumberger SA filed Critical Societe dInstrumentation Schlumberger SA
Publication of GB1306967A publication Critical patent/GB1306967A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
    • H03M1/00—Analogue/digital conversion; Digital/analogue conversion
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R27/00—Arrangements for measuring resistance, reactance, impedance, or electric characteristics derived therefrom
    • G01R27/02—Measuring real or complex resistance, reactance, impedance, or other two-pole characteristics derived therefrom, e.g. time constant
    • 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)
  • Measurement Of Current Or Voltage (AREA)
  • Measurement Of Resistance Or Impedance (AREA)
  • Amplifiers (AREA)

Abstract

1306967 Measuring resistance digitally SOC D'INSTRUMENTATION SCHLUMBERGER 26 May 1970 [28 May 1969 5 Dec 1969] 25197/70 Heading G1U [Also in Division G4] An analogue value representative of the value of a resistance 60 is obtained by means of operational amplifiers 11 and 58, and is used as the input to a dual ramp analogue to digital voltmeter (see Division G4). The value Vx, is given by the formula V x = -R x .I.R 1 /R 2 where I is the current supplied to differential amplifier 58, R 1 is the value of resistor 64 and R 2 is the value of resistor 62, R x is the volume of resistor 60, which is to be measured.
GB2519770A 1969-05-28 1970-05-26 Analog-to-digital-converter Expired GB1306967A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR6917334A FR2041678A5 (en) 1969-05-28 1969-05-28
FR6942066A FR2069918B2 (en) 1969-12-05 1969-12-05

Publications (1)

Publication Number Publication Date
GB1306967A true GB1306967A (en) 1973-02-14

Family

ID=26215046

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2519770A Expired GB1306967A (en) 1969-05-28 1970-05-26 Analog-to-digital-converter

Country Status (2)

Country Link
DE (1) DE2024925C3 (en)
GB (1) GB1306967A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110622414A (en) * 2017-03-16 2019-12-27 爱思特匹克斯有限公司 Amplifier with a high-frequency amplifier

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH665027A5 (en) * 1984-09-06 1988-04-15 Mettler Instrumente Ag METHOD FOR MEASURING AND DIGITIZING A RESISTANCE AND CIRCUIT FOR CARRYING OUT THE METHOD.

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110622414A (en) * 2017-03-16 2019-12-27 爱思特匹克斯有限公司 Amplifier with a high-frequency amplifier
CN110622414B (en) * 2017-03-16 2023-07-07 爱思特匹克斯有限公司 Amplifier

Also Published As

Publication number Publication date
DE2024925A1 (en) 1971-01-07
DE2024925B2 (en) 1974-03-21
DE2024925C3 (en) 1974-10-03

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Legal Events

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