JPS5543484A - Position detecting device - Google Patents
Position detecting deviceInfo
- Publication number
- JPS5543484A JPS5543484A JP11774178A JP11774178A JPS5543484A JP S5543484 A JPS5543484 A JP S5543484A JP 11774178 A JP11774178 A JP 11774178A JP 11774178 A JP11774178 A JP 11774178A JP S5543484 A JPS5543484 A JP S5543484A
- Authority
- JP
- Japan
- Prior art keywords
- differential amplifier
- core
- differential
- coils
- switching circuit
- 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 Length, Angles, Or The Like Using Electric Or Magnetic Means (AREA)
Abstract
PURPOSE: To enhance the detection accuracy by using a differential transformer and the differential amplifier.
CONSTITUTION: Between the positive and the negative input terminals of the differential amplifier 1, the secondary coils 23 different in winding direction are connected in series and the primary coil 4 is disposed in opposite to the secondary coils 2, 3. The differential transformer is constructed by the coils 2W4. To the output terminal of the differential amplifier 1, the switching circuit 6 is connected through the buffer 5. Thus, when the determining member 9 is pressed to the member to be determined, the core 7 is slided upward, the positive feed back is applied to the differential amplifier 1 through the secondary coil 2, the core 7, and the primary coil 4, the oscillation is done and the output signal is inputted to the switching circuit 6 to open or close the circuit 6. Accordingly, insufficient contact or contact wearing and the like due to mist and the like in the atmosphere of the used site like using the electric contact, the detection error is not generated.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP11774178A JPS5543484A (en) | 1978-09-22 | 1978-09-22 | Position detecting device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP11774178A JPS5543484A (en) | 1978-09-22 | 1978-09-22 | Position detecting device |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5543484A true JPS5543484A (en) | 1980-03-27 |
Family
ID=14719144
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP11774178A Pending JPS5543484A (en) | 1978-09-22 | 1978-09-22 | Position detecting device |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5543484A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH032242U (en) * | 1989-05-29 | 1991-01-10 |
-
1978
- 1978-09-22 JP JP11774178A patent/JPS5543484A/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH032242U (en) * | 1989-05-29 | 1991-01-10 |
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