JPS5726711A - Capacity type displacement converter - Google Patents
Capacity type displacement converterInfo
- Publication number
- JPS5726711A JPS5726711A JP10169980A JP10169980A JPS5726711A JP S5726711 A JPS5726711 A JP S5726711A JP 10169980 A JP10169980 A JP 10169980A JP 10169980 A JP10169980 A JP 10169980A JP S5726711 A JPS5726711 A JP S5726711A
- Authority
- JP
- Japan
- Prior art keywords
- output
- inverter
- capacitance
- distributed
- level
- 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
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D5/00—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable
- G01D5/12—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means
- G01D5/14—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means influencing the magnitude of a current or voltage
- G01D5/24—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means influencing the magnitude of a current or voltage by varying capacitance
- G01D5/241—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means influencing the magnitude of a current or voltage by varying capacitance by relative movement of capacitor electrodes
- G01D5/2417—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means influencing the magnitude of a current or voltage by varying capacitance by relative movement of capacitor electrodes by varying separation
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Transmission And Conversion Of Sensor Element Output (AREA)
- Measurement Of Resistance Or Impedance (AREA)
- Arrangements For Transmission Of Measured Signals (AREA)
Abstract
PURPOSE:To exclude the influence of distributed capacitances by charging and discharging an electrostatic capacity type displacement converter, including the distributed capacitances, by using a constant current circuit. CONSTITUTION:When the output of the 2nd inverter G2 is at a level H, the series circuit of the electrostatic capacitance C1 of a sensor CS and a distributed capacitance Cs2 is charged. At this time, the output impedance of the 2nd inverter G2 is small, the presence of the distributed capacitance Cs1 exerts no influence. Further, the output of the 1st inverter G1 is at a level L, and the charge in the distributed capacitance Cs2 is discharged as a constant current through a constant-value current limiting circuit CC. When an output B goes down to some level where the output of the 1st inverter G1 is inverted, the output of the 1st inverter G1 goes up to the level H. The residual charge of the distributed capacitance Cs2 is discharged rapidly through an electrostatic capacitance C1 and when the output B reaches a negative constant value, the distributed capacitance Cs2 is charged with a current passing through the constant-value current limiting circuit CC. This operation is repeated to obtain an oscillation frequency (f) which corresponds to the electrostatic capacitance C1.
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10169980A JPS5726711A (en) | 1980-07-24 | 1980-07-24 | Capacity type displacement converter |
| US06/275,510 US4387601A (en) | 1980-07-01 | 1981-06-19 | Capacitance type displacement conversion device |
| DE19813125664 DE3125664A1 (en) | 1980-07-01 | 1981-06-30 | ADJUSTMENT DEVICE |
| FR8112976A FR2486232B1 (en) | 1980-07-01 | 1981-07-01 | CAPACITIVE-TYPE DISPLACEMENT CONVERSION DEVICE |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10169980A JPS5726711A (en) | 1980-07-24 | 1980-07-24 | Capacity type displacement converter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5726711A true JPS5726711A (en) | 1982-02-12 |
Family
ID=14307563
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10169980A Pending JPS5726711A (en) | 1980-07-01 | 1980-07-24 | Capacity type displacement converter |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5726711A (en) |
-
1980
- 1980-07-24 JP JP10169980A patent/JPS5726711A/en active Pending
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A762 | Written abandonment of application |
Free format text: JAPANESE INTERMEDIATE CODE: A762 Effective date: 20041111 |