JPS57179669A - Detecting device for change in electrostatic capacitance - Google Patents

Detecting device for change in electrostatic capacitance

Info

Publication number
JPS57179669A
JPS57179669A JP6425681A JP6425681A JPS57179669A JP S57179669 A JPS57179669 A JP S57179669A JP 6425681 A JP6425681 A JP 6425681A JP 6425681 A JP6425681 A JP 6425681A JP S57179669 A JPS57179669 A JP S57179669A
Authority
JP
Japan
Prior art keywords
circuit
electrostatic capacitance
change
time constant
measured
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
JP6425681A
Other languages
English (en)
Japanese (ja)
Other versions
JPS6257227B2 (enrdf_load_stackoverflow
Inventor
Koichiro Miyagi
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.)
Anritsu Corp
Original Assignee
Anritsu Corp
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 Anritsu Corp filed Critical Anritsu Corp
Priority to JP6425681A priority Critical patent/JPS57179669A/ja
Publication of JPS57179669A publication Critical patent/JPS57179669A/ja
Publication of JPS6257227B2 publication Critical patent/JPS6257227B2/ja
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
    • G01R27/26—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
    • G01R27/2605—Measuring capacitance

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Measurement Of Resistance Or Impedance (AREA)
JP6425681A 1981-04-30 1981-04-30 Detecting device for change in electrostatic capacitance Granted JPS57179669A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP6425681A JPS57179669A (en) 1981-04-30 1981-04-30 Detecting device for change in electrostatic capacitance

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6425681A JPS57179669A (en) 1981-04-30 1981-04-30 Detecting device for change in electrostatic capacitance

Publications (2)

Publication Number Publication Date
JPS57179669A true JPS57179669A (en) 1982-11-05
JPS6257227B2 JPS6257227B2 (enrdf_load_stackoverflow) 1987-11-30

Family

ID=13252909

Family Applications (1)

Application Number Title Priority Date Filing Date
JP6425681A Granted JPS57179669A (en) 1981-04-30 1981-04-30 Detecting device for change in electrostatic capacitance

Country Status (1)

Country Link
JP (1) JPS57179669A (enrdf_load_stackoverflow)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH03123884A (ja) * 1989-10-06 1991-05-27 Beruko:Kk 検知装置

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP6028481B2 (ja) * 2012-09-14 2016-11-16 カシオ計算機株式会社 水分量判定装置及びプログラム

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH03123884A (ja) * 1989-10-06 1991-05-27 Beruko:Kk 検知装置

Also Published As

Publication number Publication date
JPS6257227B2 (enrdf_load_stackoverflow) 1987-11-30

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