JPS55159109A - Capacity type displacement converter - Google Patents
Capacity type displacement converterInfo
- Publication number
- JPS55159109A JPS55159109A JP6782379A JP6782379A JPS55159109A JP S55159109 A JPS55159109 A JP S55159109A JP 6782379 A JP6782379 A JP 6782379A JP 6782379 A JP6782379 A JP 6782379A JP S55159109 A JPS55159109 A JP S55159109A
- Authority
- JP
- Japan
- Prior art keywords
- displacements
- oscillation circuit
- output
- way
- difference
- 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
Abstract
PURPOSE: To obtain the output signal proportional linearly to displacements by applying the negative feedback corresponding to displacement detection signals to an oscillation circuit.
CONSTITUTION: The output of an oscillation circuit 27 is supplied to a capacitor C24 of which capacity changes according to physical displacements and a capacitor C25 which does not respond to the displacements, and the electric signals corresponding to the impedance values of the respective C24, C25 are detected by way of diodes 28, 29. The detection signal with respect to the C24 is negtive-fed back by way of an operational amplifier 41 to maintain the output amplitude of the oscillation circuit 27 constant. In addition, the difference of the signal voltages detected by way of the respective diodes 28, 29 is formed 47 and the voltage corresponding to this difference is negative-fed back to the oscillation circuit 27. This results in that the output of the difference changes linearly according to the displacements.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP6782379A JPS55159109A (en) | 1979-05-30 | 1979-05-30 | Capacity type displacement converter |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP6782379A JPS55159109A (en) | 1979-05-30 | 1979-05-30 | Capacity type displacement converter |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS55159109A true JPS55159109A (en) | 1980-12-11 |
Family
ID=13356041
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP6782379A Pending JPS55159109A (en) | 1979-05-30 | 1979-05-30 | Capacity type displacement converter |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS55159109A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS57139612A (en) * | 1981-02-24 | 1982-08-28 | Yokogawa Hokushin Electric Corp | Capacitance type converter |
JPS57158533A (en) * | 1981-03-16 | 1982-09-30 | Bendix Corp | Differential pressure measuring apparatus |
-
1979
- 1979-05-30 JP JP6782379A patent/JPS55159109A/en active Pending
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS57139612A (en) * | 1981-02-24 | 1982-08-28 | Yokogawa Hokushin Electric Corp | Capacitance type converter |
JPH0216450B2 (en) * | 1981-02-24 | 1990-04-17 | Yokogawa Electric Corp | |
JPS57158533A (en) * | 1981-03-16 | 1982-09-30 | Bendix Corp | Differential pressure measuring apparatus |
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