JPS5717868A - Lcr measuring device - Google Patents

Lcr measuring device

Info

Publication number
JPS5717868A
JPS5717868A JP9208780A JP9208780A JPS5717868A JP S5717868 A JPS5717868 A JP S5717868A JP 9208780 A JP9208780 A JP 9208780A JP 9208780 A JP9208780 A JP 9208780A JP S5717868 A JPS5717868 A JP S5717868A
Authority
JP
Japan
Prior art keywords
voltage
cpu4
operation process
sampling
pulse
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
JP9208780A
Other languages
Japanese (ja)
Inventor
Tsukasa Okazaki
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.)
SYST DESIGN KK
Original Assignee
SYST DESIGN KK
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 SYST DESIGN KK filed Critical SYST DESIGN KK
Priority to JP9208780A priority Critical patent/JPS5717868A/en
Publication of JPS5717868A publication Critical patent/JPS5717868A/en
Pending 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
    • G01R27/26—Measuring inductance or capacitance; Measuring quality factor, e.g. by using the resonance method; Measuring loss factor; Measuring dielectric constants ; Measuring impedance or related variables

Landscapes

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

Abstract

PURPOSE:To implement most part of operation process digitally and eliminate the need for adjustment or the like by applying operation process to digital data obtained by sample holding of a sampled voltage. CONSTITUTION:A voltage of a reference oscillator 1a is applied to a sampling reference interval generating circuit 6 through a resistor 1b. A counter 8 counts n- time pulse of the frequency of a reference voltage Ea from a PLL circuit 6b, and is reset every one cycle by a pulse from a gate 6f. Also, a counter 7 counts a pulse per cycle from a CPU4 and is reset every n cycles. Outputs of these counters 7, 8 are compared by a comparator 9, and when they coincide, a sampling clock is generated. On the other hand, the reference voltage Ea and sampling voltage Wb are inputted to the CPU4 through sample holding circuits 2a, 2b and an AD convertor 3, and the CPU4 implements operation process on data to compute LCR. Thus, enough processing time can be obtained and the measuring in a high frequency can be also treated.
JP9208780A 1980-07-04 1980-07-04 Lcr measuring device Pending JPS5717868A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP9208780A JPS5717868A (en) 1980-07-04 1980-07-04 Lcr measuring device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9208780A JPS5717868A (en) 1980-07-04 1980-07-04 Lcr measuring device

Publications (1)

Publication Number Publication Date
JPS5717868A true JPS5717868A (en) 1982-01-29

Family

ID=14044652

Family Applications (1)

Application Number Title Priority Date Filing Date
JP9208780A Pending JPS5717868A (en) 1980-07-04 1980-07-04 Lcr measuring device

Country Status (1)

Country Link
JP (1) JPS5717868A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60255655A (en) * 1984-05-31 1985-12-17 金井　昌邦 Manufacture of material for civil construction
JPS62123051A (en) * 1985-11-25 1987-06-04 松下電工株式会社 Asbestos cement slurry composition
JP2013160707A (en) * 2012-02-08 2013-08-19 Seiko Epson Corp Capacitance detection circuit, optical module and electronic apparatus

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5138679A (en) * 1974-09-30 1976-03-31 Hitachi Ltd INPIIDANSUSOKUTEISOCHI

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5138679A (en) * 1974-09-30 1976-03-31 Hitachi Ltd INPIIDANSUSOKUTEISOCHI

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60255655A (en) * 1984-05-31 1985-12-17 金井　昌邦 Manufacture of material for civil construction
JPS62123051A (en) * 1985-11-25 1987-06-04 松下電工株式会社 Asbestos cement slurry composition
JP2013160707A (en) * 2012-02-08 2013-08-19 Seiko Epson Corp Capacitance detection circuit, optical module and electronic apparatus

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