JPS5658610A - Displacement transducing circuit - Google Patents

Displacement transducing circuit

Info

Publication number
JPS5658610A
JPS5658610A JP13487879A JP13487879A JPS5658610A JP S5658610 A JPS5658610 A JP S5658610A JP 13487879 A JP13487879 A JP 13487879A JP 13487879 A JP13487879 A JP 13487879A JP S5658610 A JPS5658610 A JP S5658610A
Authority
JP
Japan
Prior art keywords
pair
voltages
capacities
load
measured
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
Application number
JP13487879A
Other languages
Japanese (ja)
Inventor
Keiichiro Tago
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Fuji Electric Co Ltd
Original Assignee
Fuji Electric Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Fuji Electric Co Ltd filed Critical Fuji Electric Co Ltd
Priority to JP13487879A priority Critical patent/JPS5658610A/en
Publication of JPS5658610A publication Critical patent/JPS5658610A/en
Pending legal-status Critical Current

Links

Landscapes

  • Arrangements For Transmission Of Measured Signals (AREA)
  • Transmission And Conversion Of Sensor Element Output (AREA)

Abstract

PURPOSE: To obtain an output corresponding to the load to be measured by the same constitution of a circuit in the case where an electrode having a pair of capacities or one capacity is displaced due to the load to be measured, by detecting the current of a value proportional to the difference between the respective reciprocals of a pair of electrostatic capacities.
CONSTITUTION: At least one of electrostatic capacities C1 and C2 in a pair is changed in correspondence with the mechanical displacement, while the voltages corresponding respectively to C1 and C2 are transduced into pulse signals i1 and i2. And, each of the negative feedback circuits of negative feedback amplifiers Q3 and Q4 is intercepted intermittently. In tis way, the voltages V1 and V2 proportional to the respective reciprocals of C1 and C2 are formed and the difference voltage Vo between the voltages is taken out through the intermediary of Q5 and a transitor 5.
COPYRIGHT: (C)1981,JPO&Japio
JP13487879A 1979-10-19 1979-10-19 Displacement transducing circuit Pending JPS5658610A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP13487879A JPS5658610A (en) 1979-10-19 1979-10-19 Displacement transducing circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP13487879A JPS5658610A (en) 1979-10-19 1979-10-19 Displacement transducing circuit

Publications (1)

Publication Number Publication Date
JPS5658610A true JPS5658610A (en) 1981-05-21

Family

ID=15138599

Family Applications (1)

Application Number Title Priority Date Filing Date
JP13487879A Pending JPS5658610A (en) 1979-10-19 1979-10-19 Displacement transducing circuit

Country Status (1)

Country Link
JP (1) JPS5658610A (en)

Similar Documents

Publication Publication Date Title
JPS6415683A (en) Compensation of electric charge amplifier circuit used especially for piezo-electric type under water listener
CA2069858A1 (en) Circuit for measuring battery current
JPS55136708A (en) Voltage current conversion circuit
JPS5658610A (en) Displacement transducing circuit
JPS5676616A (en) Current operational amplifier
JPS5533221A (en) Current output circuit
JPS5575313A (en) Offset voltage compensating circuit for amplifier
JPS57121308A (en) Power amplifier
JPS5717205A (en) Operational amplifier
JPS5611693A (en) Detection circuit for electric charge
JPS5619408A (en) Detecting circuit for electrostatic capacity difference of differential capacitor
JPS5560804A (en) Measuring method for film thickness
JPS55149028A (en) Load detector
JPS5710462A (en) Current difference detection circuit
JPS55159109A (en) Capacity type displacement converter
JPS57106804A (en) Measuring device for thickness of film
JPS5670245A (en) Double feed detection system
JPS56160611A (en) Analog quantity indicator
JPS57122668A (en) Booster circuit
JPS55107966A (en) Residual storage battery capacity meter
JPS57207831A (en) Weight detecting circuit of load-cell type weighing apparatus
JPS57115016A (en) Comparator circuit of hysteresis level
JPS5338380A (en) Peak detecting circuit
JPS5633563A (en) Measuring device for amplifier
JPS55149854A (en) Current detecting circuit for parallel-operated transistor circuit