JPS56157871A - Measuring equipment for resistance - Google Patents

Measuring equipment for resistance

Info

Publication number
JPS56157871A
JPS56157871A JP6115980A JP6115980A JPS56157871A JP S56157871 A JPS56157871 A JP S56157871A JP 6115980 A JP6115980 A JP 6115980A JP 6115980 A JP6115980 A JP 6115980A JP S56157871 A JPS56157871 A JP S56157871A
Authority
JP
Japan
Prior art keywords
resister
frequency
counter
measured
accuracy
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.)
Pending
Application number
JP6115980A
Other languages
Japanese (ja)
Inventor
Muneo Ishibachi
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.)
Yokogawa Electric Corp
Original Assignee
Yokogawa Hokushin Electric Corp
Yokogawa Electric Works Ltd
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 Yokogawa Hokushin Electric Corp, Yokogawa Electric Works Ltd filed Critical Yokogawa Hokushin Electric Corp
Priority to JP6115980A priority Critical patent/JPS56157871A/en
Publication of JPS56157871A publication Critical patent/JPS56157871A/en
Pending 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
    • G01R19/252—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 conversion of voltage or current into frequency and measuring of this frequency

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Measurement Of Resistance Or Impedance (AREA)

Abstract

PURPOSE:To enable high operation accuracy to be obtained by a simple construction by measuring the frequency of the frequency signal obtained by converting the current corresponding to the resistance value of a resister to be measured. CONSTITUTION:Voltage V and the current Ix flowing in a resister Rx are fed to a resister Rx and a frequency converter FC respectively with a resister to be measured Rx connected to measuring terminals O1 and O2. The frequency signal f1 from a frequency converter FC is subjected to the frequency division by a flip-flop FF and an NAND gate NG feeds the output clock f0 of an oscillator OS to a counter CO during the period corresponding to the pulse width T1 of thus-obtained frequency- divided signal. The count value C of the counter CO is given to an indicator DI via a latch circuit LA and a decoder DE and the value of the resister Rx is digitally indicated. Thereby, reciprocal operation can be improved in accuracy, digitalization is facilitated and the required quantity of parts can be reduced.
JP6115980A 1980-05-08 1980-05-08 Measuring equipment for resistance Pending JPS56157871A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP6115980A JPS56157871A (en) 1980-05-08 1980-05-08 Measuring equipment for resistance

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6115980A JPS56157871A (en) 1980-05-08 1980-05-08 Measuring equipment for resistance

Publications (1)

Publication Number Publication Date
JPS56157871A true JPS56157871A (en) 1981-12-05

Family

ID=13163074

Family Applications (1)

Application Number Title Priority Date Filing Date
JP6115980A Pending JPS56157871A (en) 1980-05-08 1980-05-08 Measuring equipment for resistance

Country Status (1)

Country Link
JP (1) JPS56157871A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS614973A (en) * 1984-06-19 1986-01-10 Rohm Co Ltd Resistance value measuring circuit

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS51381A (en) * 1974-06-19 1976-01-06 Matsushita Electric Ind Co Ltd Ondokenshutsu hyojisochi

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS51381A (en) * 1974-06-19 1976-01-06 Matsushita Electric Ind Co Ltd Ondokenshutsu hyojisochi

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS614973A (en) * 1984-06-19 1986-01-10 Rohm Co Ltd Resistance value measuring circuit
JPH0511268B2 (en) * 1984-06-19 1993-02-15 Rohm Kk

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