FR2441852A1 - Ohmmetre numerique avec dispositif de verification de continuite electrique - Google Patents

Ohmmetre numerique avec dispositif de verification de continuite electrique

Info

Publication number
FR2441852A1
FR2441852A1 FR7928092A FR7928092A FR2441852A1 FR 2441852 A1 FR2441852 A1 FR 2441852A1 FR 7928092 A FR7928092 A FR 7928092A FR 7928092 A FR7928092 A FR 7928092A FR 2441852 A1 FR2441852 A1 FR 2441852A1
Authority
FR
France
Prior art keywords
digital
input terminals
converter
electrical continuity
check device
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.)
Granted
Application number
FR7928092A
Other languages
English (en)
Other versions
FR2441852B1 (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.)
Beckman Coulter Inc
Original Assignee
Beckman Instruments 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 Beckman Instruments Inc filed Critical Beckman Instruments Inc
Publication of FR2441852A1 publication Critical patent/FR2441852A1/fr
Application granted granted Critical
Publication of FR2441852B1 publication Critical patent/FR2441852B1/fr
Granted 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
    • G01R27/14—Measuring resistance by measuring current or voltage obtained from a reference source
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R13/00—Arrangements for displaying electric variables or waveforms
    • G01R13/02—Arrangements for displaying electric variables or waveforms for displaying measured electric variables in digital form
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
    • G01R31/50—Testing of electric apparatus, lines, cables or components for short-circuits, continuity, leakage current or incorrect line connections
    • G01R31/52—Testing for short-circuits, leakage current or ground faults
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
    • G01R31/50—Testing of electric apparatus, lines, cables or components for short-circuits, continuity, leakage current or incorrect line connections
    • G01R31/54—Testing for continuity

Landscapes

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

Abstract

L'INVENTION CONCERNE UN INSTRUMENT DE VERIFICATION NUMERIQUE POUR MESURER LA RESISTANCE, AYANT DEUX BORNES D'ENTREE, A RELIER A UN ELEMENT DE CIRCUIT D'UNE RESISTANCE INCONNUE, UNE SOURCE DE TENSION DE REFERENCE POUR QU'UNE TENSION ANALOGIQUE APPARAISSE AUX BORNES D'ENTREE, PROPORTIONNELLE A LA RESISTANCE INCONNUE. SELON L'INVENTION, UN MOYEN 30 POUR DETECTER ET SIGNALER IMMEDIATEMENT UNE CONTINUITE ELECTRIQUE ENTRE LES BORNES D'ENTREE 13, 14, COMPREND UN CONVERTISSEUR ANALOGIQUE-NUMERIQUE A UN BIT 31 AYANT DEUX BORNES D'ENTREE 32, 33, LA BORNE 32 ETANT DIRECTEMENT RELIEE A L'UNE DE CELLES DE L'INSTRUMENT DE VERIFICATION, LE CONVERTISSEUR AYANT UNE IMPEDANCE SUFFISAMMENT ELEVEE POUR NE PAS AFFECTER LE FONCTIONNEMENT DU CIRCUIT DE MESURE, LA BORNE 33 ETANT RELIEE A UNE SECONDE TENSION DE REFERENCE V; UN CARACTERE 38 D'AFFICHAGE DE CONTINUITE EST VISIBLE SUR L'INSTRUMENT ET UN CIRCUIT D'ATTAQUE 27 EST RELIE ENTRE LUI ET LE CONVERTISSEUR 31. L'INVENTION S'APPLIQUE NOTAMMENT AUX OHMMETRES NUMERIQUES.
FR7928092A 1978-11-16 1979-11-14 Ohmmetre numerique avec dispositif de verification de continuite electrique Granted FR2441852A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US05/961,154 US4228394A (en) 1978-11-16 1978-11-16 Digital ohmmeter with electrical continuity tester

Publications (2)

Publication Number Publication Date
FR2441852A1 true FR2441852A1 (fr) 1980-06-13
FR2441852B1 FR2441852B1 (fr) 1983-09-23

Family

ID=25504134

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7928092A Granted FR2441852A1 (fr) 1978-11-16 1979-11-14 Ohmmetre numerique avec dispositif de verification de continuite electrique

Country Status (4)

Country Link
US (1) US4228394A (fr)
DE (1) DE2946214C2 (fr)
FR (1) FR2441852A1 (fr)
GB (1) GB2035576B (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1992000504A1 (fr) * 1990-06-23 1992-01-09 Robert Bosch Gmbh Dispositif pour la detection fiable de pannes et l'elimination des cretes de bruits parasites pendant une analyse potentiometrique
FR3001275A1 (fr) * 2013-01-24 2014-07-25 Era Sib Dispositif de detection de l'etat d'un montage d'une bobine sur une electrovanne.

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4323972A (en) * 1980-03-10 1982-04-06 Sencore, Inc. Ohm meter with automatic lead resistance compensation
CH665027A5 (de) * 1984-09-06 1988-04-15 Mettler Instrumente Ag Verfahren zur messung und digitalisierung eines widerstandes und schaltung zur durchfuehrung des verfahrens.
US4794383A (en) * 1986-01-15 1988-12-27 Karel Havel Variable color digital multimeter
HU210576B (en) * 1986-08-13 1995-05-29 Budapesti Eletromos Muevek Instrument for measuring contact resistance for checking completness of the mains line connections
US4954782A (en) * 1987-05-08 1990-09-04 The Boeing Company Self-checking ohmmeter that checks for contact resistance of its probes
US4876515A (en) * 1987-05-08 1989-10-24 The Boeing Company Self-checking ohmmeter that checks for contact resistance of its probes
US5227984A (en) * 1991-03-08 1993-07-13 John Fluke Mfg. Co., Inc. Instrument with continuity capture feature
DE4116603A1 (de) * 1991-05-22 1992-11-26 Vdo Schindling Schaltungsanordnung zur ueberwachung des kontakts zwischen der widerstandsbahn und dem schleifer eines potentiometers
US5614832A (en) * 1995-06-02 1997-03-25 International Business Machines Corporation High voltage protected ohmmeter
DE19544658C1 (de) * 1995-11-30 1997-03-20 Bosch Gmbh Robert Verfahren zur Prüfung einer an einen Niederfrequenzverstärker angeschlossenen Impedanz und Anordnung dazu
US6750663B2 (en) * 2001-12-28 2004-06-15 Texas Instruments Incorporated Method and system for conducting continuity testing on analog devices having sensitive input nodes
KR100541422B1 (ko) * 2003-11-29 2006-01-11 지오토주식회사 휴대형 전기 테스트장비
US8179151B2 (en) * 2008-04-04 2012-05-15 Fairchild Semiconductor Corporation Method and system that determines the value of a resistor in linear and non-linear resistor sets
US7948227B2 (en) * 2008-09-08 2011-05-24 Beckmann Robert U Electrical circuit diagnostic tool
DK2230529T3 (da) * 2009-03-18 2012-12-17 Vito Nv Kraftcellesystem med organ til at detektere en diskontinuitet

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3559059A (en) * 1968-07-12 1971-01-26 Space Corp Force indicating system

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3619574A (en) * 1968-04-08 1971-11-09 Time Systems Corp Digital meter with auxiliary visual analog display
US3536997A (en) * 1968-10-11 1970-10-27 Hickok Electrical Instr Co The Digital ohmmeter with modified wheatstone bridge
US3596269A (en) * 1968-10-25 1971-07-27 Richard H Laska Structural defect monitoring device
US3588690A (en) * 1969-07-16 1971-06-28 Hugh Allen Griffin Test circuit including bridge type oscillator means for monitoring equivalent series resistance of quartz crystals
JPS4932024B1 (fr) * 1969-07-18 1974-08-27
US3714569A (en) * 1970-05-28 1973-01-30 Kollmorgen Corp Electronic measuring instrument with digital display scale extension
US3831089A (en) * 1971-08-20 1974-08-20 G Pearce Continuity tester
FR2264432B1 (fr) * 1974-03-15 1976-12-17 Thomson Csf
FR2296851A1 (fr) * 1975-01-03 1976-07-30 Hofmann Maschf Geb Procede et dispositif pour l'affichage numerique de valeurs electriques de mesure et/ou d'essai
US3978472A (en) * 1975-04-30 1976-08-31 International Business Machines Corporation Digital volt-ohmmeter
US4088947A (en) * 1976-06-03 1978-05-09 Rca Corporation Electrical continuity test apparatus having a forward biased diode across the test terminals

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3559059A (en) * 1968-07-12 1971-01-26 Space Corp Force indicating system

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
EXBK/77 *

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1992000504A1 (fr) * 1990-06-23 1992-01-09 Robert Bosch Gmbh Dispositif pour la detection fiable de pannes et l'elimination des cretes de bruits parasites pendant une analyse potentiometrique
FR3001275A1 (fr) * 2013-01-24 2014-07-25 Era Sib Dispositif de detection de l'etat d'un montage d'une bobine sur une electrovanne.
EP2759750A1 (fr) * 2013-01-24 2014-07-30 Era Sib (SAS) Dispositif de détection de l'état d'un montage d'une bobine sur une électrovanne

Also Published As

Publication number Publication date
DE2946214C2 (de) 1983-01-13
GB2035576B (en) 1982-09-02
GB2035576A (en) 1980-06-18
US4228394A (en) 1980-10-14
FR2441852B1 (fr) 1983-09-23
DE2946214A1 (de) 1980-06-19

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Legal Events

Date Code Title Description
CD Change of name or company name
TP Transmission of property
ST Notification of lapse