GB1589957A - Method and apparatus for determining the resistance value of an unknown resistance by measuring the conductance of that resistance - Google Patents

Method and apparatus for determining the resistance value of an unknown resistance by measuring the conductance of that resistance Download PDF

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Publication number
GB1589957A
GB1589957A GB10744/78A GB1074478A GB1589957A GB 1589957 A GB1589957 A GB 1589957A GB 10744/78 A GB10744/78 A GB 10744/78A GB 1074478 A GB1074478 A GB 1074478A GB 1589957 A GB1589957 A GB 1589957A
Authority
GB
United Kingdom
Prior art keywords
resistance
voltage
conductance
time
integrating
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
GB10744/78A
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.)
Fluke Corp
Original Assignee
John Fluke Manufacturing Co Inc
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 John Fluke Manufacturing Co Inc filed Critical John Fluke Manufacturing Co Inc
Publication of GB1589957A publication Critical patent/GB1589957A/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
    • 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
    • G01R27/025—Measuring very high resistances, e.g. isolation resistances, i.e. megohm-meters
    • 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
    • H03M1/52—Input signal integrated with linear return to datum

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Measurement Of Resistance Or Impedance (AREA)
GB10744/78A 1977-05-23 1978-03-17 Method and apparatus for determining the resistance value of an unknown resistance by measuring the conductance of that resistance Expired GB1589957A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US79969377A 1977-05-23 1977-05-23

Publications (1)

Publication Number Publication Date
GB1589957A true GB1589957A (en) 1981-05-20

Family

ID=25176528

Family Applications (1)

Application Number Title Priority Date Filing Date
GB10744/78A Expired GB1589957A (en) 1977-05-23 1978-03-17 Method and apparatus for determining the resistance value of an unknown resistance by measuring the conductance of that resistance

Country Status (4)

Country Link
JP (1) JPS53144783A (US20080293856A1-20081127-C00150.png)
DE (1) DE2822467A1 (US20080293856A1-20081127-C00150.png)
GB (1) GB1589957A (US20080293856A1-20081127-C00150.png)
NL (1) NL7805426A (US20080293856A1-20081127-C00150.png)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8368406B2 (en) 2009-10-13 2013-02-05 Yazaki Corporation Insulation measuring apparatus

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0317798Y2 (US20080293856A1-20081127-C00150.png) * 1985-04-09 1991-04-15
DE3828368A1 (de) * 1988-08-20 1990-02-22 Klaus Kittmann Leitwert-messgeraet und seine verwendung
DE4234789A1 (de) * 1992-10-15 1994-04-21 Metrawatt Gmbh Digitales Multimeter
EP0701687B1 (en) * 1994-04-05 1999-07-28 Koninklijke Philips Electronics N.V. Resistance measuring circuit, and thermal appliance, electrical thermometer and cold-generating appliance including such a measuring circuit
DE10024716C2 (de) * 2000-05-19 2002-08-14 Asm Automation Sensorik Messte Meßumformer für potentiometrische Positionssensoren und Verfahren zur Parametrisierung
JP5648601B2 (ja) * 2011-08-08 2015-01-07 株式会社デンソー コンデンサの放電回路

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE953732C (de) * 1954-04-18 1956-12-06 Hartmann & Braun Ag Verfahren zur Messung bzw. UEberwachung geringer Leitfaehigkeiten
JPS5648835B2 (US20080293856A1-20081127-C00150.png) * 1972-11-15 1981-11-18
US3876933A (en) * 1973-12-28 1975-04-08 Itt Resistance measuring instrument with linearized digital readout

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8368406B2 (en) 2009-10-13 2013-02-05 Yazaki Corporation Insulation measuring apparatus

Also Published As

Publication number Publication date
JPS53144783A (en) 1978-12-16
NL7805426A (nl) 1978-11-27
DE2822467A1 (de) 1978-12-07
DE2822467C2 (US20080293856A1-20081127-C00150.png) 1990-08-16

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Legal Events

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PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee