CA990353A - Linear input ohmmeter - Google Patents

Linear input ohmmeter

Info

Publication number: CA990353A
Authority: CA; Canada
Prior art keywords: ohmmeter; linear input; linear; input; input ohmmeter
Prior art date: 1972-08-21
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

CA179,178A

Other languages

English (en)

Other versions

CA179178S (en

Inventor

Irwin Munt

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 NV

Original Assignee

Schlumberger NV

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.)

1972-08-21

Filing date

1973-08-20

Publication date

1976-06-01

1973-08-20 Application filed by Schlumberger NV filed Critical Schlumberger NV

1976-06-01 Application granted granted Critical

1976-06-01 Publication of CA990353A publication Critical patent/CA990353A/en

Status Expired legal-status Critical Current

Links

Classifications

- 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
- H03M1/52—Input signal integrated with linear return to datum

Landscapes

Physics & Mathematics (AREA)
General Physics & Mathematics (AREA)
Measurement Of Resistance Or Impedance (AREA)
Measuring Instrument Details And Bridges, And Automatic Balancing Devices (AREA)

CA179,178A 1972-08-21 1973-08-20 Linear input ohmmeter Expired CA990353A (en)

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
US28201972A	1972-08-21	1972-08-21

Publications (1)

Publication Number	Publication Date
CA990353A true CA990353A (en)	1976-06-01

Family

ID=23079747

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
CA179,178A Expired CA990353A (en)	1972-08-21	1973-08-20	Linear input ohmmeter

Country Status (8)

Country	Link
US (1)	US3786350A (it)
JP (1)	JPS505079A (it)
CA (1)	CA990353A (it)
DE (1)	DE2341322A1 (it)
FR (1)	FR2197177B1 (it)
GB (1)	GB1446194A (it)
IT (1)	IT992933B (it)
NL (1)	NL7311422A (it)

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US3568044A (en) *	1968-09-12	1971-03-02	Bell & Howell Co	Linearizing circuit for high output transducers
JPS5650232B2 (it) *	1972-11-15	1981-11-27
JPS5648835B2 (it) *	1972-11-15	1981-11-18
GB1455565A (en) *	1972-12-22	1976-11-17	Solartron Electronic Group	Anaologue to digital converters
US3876933A (en) *	1973-12-28	1975-04-08	Itt	Resistance measuring instrument with linearized digital readout
DE2745055A1 (de) *	1977-10-06	1979-04-19	Bunker Ramo	Potentiometer mit digitalanzeige
US4242631A (en) *	1978-06-01	1980-12-30	Genrad, Inc.	Front-end circuit apparatus for impedance measurements and the like
US4239958A (en) *	1979-03-13	1980-12-16	University Of Strathclyde	Apparatus for use in ordering trials
CH665027A5 (de) *	1984-09-06	1988-04-15	Mettler Instrumente Ag	Verfahren zur messung und digitalisierung eines widerstandes und schaltung zur durchfuehrung des verfahrens.
GB2222261B (en) *	1988-08-22	1992-09-16	Seiko Epson Corp	Humidity measuring apparatus
US5831427A (en) *	1996-12-11	1998-11-03	Elsyn, Inc.	Voltage measuring device for a source with unknown resistance
US6597183B1 (en) *	2001-12-28	2003-07-22	Texas Instruments Incorporated	Resistance measurement system
CN112567236A (zh) *	2018-05-17	2021-03-26	ams国际有限公司	传感器装置和用于传感器测量的方法

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US3060379A (en) *	1959-09-30	1962-10-23	Osvold Robert Harold	Ohmmeter
US3490039A (en) *	1967-02-23	1970-01-13	Canadian Patents Dev	Method and apparatus for measuring high resistances in relation to resistance ratio,capacitance,and a time interval
US3566265A (en) *	1968-11-18	1971-02-23	Time Systems Corp	Compensated step ramp digital voltmeter
FR2069918B2 (it) *	1969-12-05	1973-11-16	Schlumberger Inst System
GB1282035A (en) *	1969-09-26	1972-07-19	Solartron Electronic Group	Measurements with digital voltmeters

1972
- 1972-08-21 US US00282019A patent/US3786350A/en not_active Expired - Lifetime
1973
- 1973-08-13 FR FR7329476A patent/FR2197177B1/fr not_active Expired
- 1973-08-13 IT IT27815/73A patent/IT992933B/it active
- 1973-08-16 DE DE19732341322 patent/DE2341322A1/de active Pending
- 1973-08-20 NL NL7311422A patent/NL7311422A/xx not_active Application Discontinuation
- 1973-08-20 CA CA179,178A patent/CA990353A/en not_active Expired
- 1973-08-21 JP JP48093786A patent/JPS505079A/ja active Pending
- 1973-08-21 GB GB3938773A patent/GB1446194A/en not_active Expired

Also Published As

Publication number	Publication date
US3786350A (en)	1974-01-15
IT992933B (it)	1975-09-30
FR2197177B1 (it)	1978-12-29
NL7311422A (it)	1974-02-25
GB1446194A (en)	1976-08-18
DE2341322A1 (de)	1974-03-14
JPS505079A (it)	1975-01-20
FR2197177A1 (it)	1974-03-22

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