JPS5698661A - Inductance measurememt device - Google Patents

Inductance measurememt device

Info

Publication number
JPS5698661A
JPS5698661A JP52080A JP52080A JPS5698661A JP S5698661 A JPS5698661 A JP S5698661A JP 52080 A JP52080 A JP 52080A JP 52080 A JP52080 A JP 52080A JP S5698661 A JPS5698661 A JP S5698661A
Authority
JP
Japan
Prior art keywords
coil
inductance
signal
circuit
series
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
JP52080A
Other languages
Japanese (ja)
Inventor
Masami Tanitsu
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.)
Toshiba Corp
Original Assignee
Toshiba Corp
Tokyo Shibaura Electric Co 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 Toshiba Corp, Tokyo Shibaura Electric Co Ltd filed Critical Toshiba Corp
Priority to JP52080A priority Critical patent/JPS5698661A/en
Publication of JPS5698661A publication Critical patent/JPS5698661A/en
Pending legal-status Critical Current

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  • Measurement Of Resistance Or Impedance (AREA)

Abstract

PURPOSE: To permit a higher accurate measurement not affected by temperature changes, by connected a reference resistor to a coil in series and synchronously rectifying the voltage signal grenarated across the coil by the signal which is a phase shifted signal of the voltage across the standard resistor.
CONSTITUTION: A coil having inductance L and D.C. resistance (r) is connected in series with a reference resistor R not affected by temperature changes. This series circuit is connected to a power source (e). Then, the output system of the coil is provided with a synchronous rectifying circuit 11, and both terminals of the resistor R with a π/2 radian phase-shifting circuit 12. The output signal of the phase-shifting circuit 12 controls the switching of the synchronous rectifying circuit 11. Therefore, only the voltage signal of inductance L can be taken out.
COPYRIGHT: (C)1981,JPO&Japio
JP52080A 1980-01-09 1980-01-09 Inductance measurememt device Pending JPS5698661A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP52080A JPS5698661A (en) 1980-01-09 1980-01-09 Inductance measurememt device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP52080A JPS5698661A (en) 1980-01-09 1980-01-09 Inductance measurememt device

Publications (1)

Publication Number Publication Date
JPS5698661A true JPS5698661A (en) 1981-08-08

Family

ID=11476038

Family Applications (1)

Application Number Title Priority Date Filing Date
JP52080A Pending JPS5698661A (en) 1980-01-09 1980-01-09 Inductance measurememt device

Country Status (1)

Country Link
JP (1) JPS5698661A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59187272A (en) * 1983-04-07 1984-10-24 Nippon Columbia Co Ltd Electric constant measuring apparatus
FR2685474A1 (en) * 1991-12-21 1993-06-25 Bosch Gmbh Robert OPERATING CIRCUIT FOR INDUCTIVE SENSOR WHOSE INDUCTANCE DEPENDS ON THE SIZE TO BE MEASURED.

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59187272A (en) * 1983-04-07 1984-10-24 Nippon Columbia Co Ltd Electric constant measuring apparatus
FR2685474A1 (en) * 1991-12-21 1993-06-25 Bosch Gmbh Robert OPERATING CIRCUIT FOR INDUCTIVE SENSOR WHOSE INDUCTANCE DEPENDS ON THE SIZE TO BE MEASURED.

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