JPS5745467A - Converter for resistance variation detection by noncontacting method - Google Patents
Converter for resistance variation detection by noncontacting methodInfo
- Publication number
- JPS5745467A JPS5745467A JP12068580A JP12068580A JPS5745467A JP S5745467 A JPS5745467 A JP S5745467A JP 12068580 A JP12068580 A JP 12068580A JP 12068580 A JP12068580 A JP 12068580A JP S5745467 A JPS5745467 A JP S5745467A
- Authority
- JP
- Japan
- Prior art keywords
- ferrite cores
- bridge
- impedance
- resistance variation
- resistance
- 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 detect the extent of resistance variation with >=99.9% conversion efficiency by using a honeycomb coil matched with the impedance of a bridge. CONSTITUTION:A nonmagnetic material shaft 9 is inserted into coaxial hollow different-diameter ferrite cores 2 and 3 and bowl-shaped ferrite cores 1 and 4, and the ferrite cores 1 and 4 are turned with a <=3mm. air gap to detect the extent of resistance variation. When a coil 5 having about 700OMEGA secondary impedance at the primary side 7 and secondary side 8 of an input side and at an input side while bridge impedance is 350OMEGA is inserted into the ferrite cores 1-4, outputs each have >=99.9% conversion efficiency for variation of one bridge side in response to a 3V and 5kHz input. This device is of a noncontacting type, so variations in resistance are detected with high efficiency without influences of noises due to contact resistances.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP12068580A JPS5745467A (en) | 1980-09-02 | 1980-09-02 | Converter for resistance variation detection by noncontacting method |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP12068580A JPS5745467A (en) | 1980-09-02 | 1980-09-02 | Converter for resistance variation detection by noncontacting method |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5745467A true JPS5745467A (en) | 1982-03-15 |
Family
ID=14792410
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP12068580A Pending JPS5745467A (en) | 1980-09-02 | 1980-09-02 | Converter for resistance variation detection by noncontacting method |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5745467A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6142920U (en) * | 1984-08-24 | 1986-03-20 | 株式会社 トレビアン七宝工芸 | Cloisonne urn |
-
1980
- 1980-09-02 JP JP12068580A patent/JPS5745467A/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6142920U (en) * | 1984-08-24 | 1986-03-20 | 株式会社 トレビアン七宝工芸 | Cloisonne urn |
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