JPS5698661A - Inductance measurememt device - Google Patents
Inductance measurememt deviceInfo
- 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
Links
Landscapes
- 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
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)
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. |
-
1980
- 1980-01-09 JP JP52080A patent/JPS5698661A/en active Pending
Cited By (2)
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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