JPS59183611U - Differential capacitance voltage conversion circuit - Google Patents
Differential capacitance voltage conversion circuitInfo
- Publication number
- JPS59183611U JPS59183611U JP7726983U JP7726983U JPS59183611U JP S59183611 U JPS59183611 U JP S59183611U JP 7726983 U JP7726983 U JP 7726983U JP 7726983 U JP7726983 U JP 7726983U JP S59183611 U JPS59183611 U JP S59183611U
- Authority
- JP
- Japan
- Prior art keywords
- pair
- voltage
- capacitors
- sample
- 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
- Transmission And Conversion Of Sensor Element Output (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
第１図および第２図は従来の変換回路の一例を示す接続
図、第３図は本考案変換回路の一実施例を示す接続図、
第４図はその動作説明のための波形図、第５図および第
６図は本考案変換回路の他の実施例を示す接続図である
。
１、 ２・・・コンデンサ、３．４・・・センサアンプ
、５・・・発振器、６．７・・・同期整流回路、８・・
・減算器、９・・・加算器、１θ・・・割算器、１１・
・・偏差アンプ、１２・・・直流電源、１３．１４・・
・スイッチ、１５゜１６・・・サンプルホールド回路、
１７・・・タイミング制御回路。1 and 2 are connection diagrams showing an example of a conventional conversion circuit, and FIG. 3 is a connection diagram showing an embodiment of the conversion circuit of the present invention.
FIG. 4 is a waveform diagram for explaining its operation, and FIGS. 5 and 6 are connection diagrams showing other embodiments of the conversion circuit of the present invention. 1, 2... Capacitor, 3.4... Sensor amplifier, 5... Oscillator, 6.7... Synchronous rectifier circuit, 8...
・Subtractor, 9... Adder, 1θ... Divider, 11.
... Deviation amplifier, 12... DC power supply, 13.14...
・Switch, 15°16...sample hold circuit,
17...Timing control circuit.
Claims (1)
ンデンサと、これら一対の可変コンデンサが入力回路に
接続されたセンサアンプと、直流電圧をオンオフした電
圧を前記一対のコンデンサに同相で印加し、前記センサ
アンプの出力に一対のコンデンサの容量の和に応じた電
圧を得る手段と、前記直流電圧をオンオフして前記一対
のコンデンサに互いに逆相て印加し、前記センサアンプ
の出力に一対のコンデンサの容量の差に応じた電圧を得
る手段と、前記一対のコンデンサの容量の和に応じた電
圧をサンプリングする第１−のサンプルホールド回路と
、前記一対のコンデンサの容量の差に応じた電圧をサン
プリングする第２のサンプルホールド回路と、これら第
１、第２のサンプルホールド回路のホールド値に基づい
て一対のコンデンサの容量の差／和に応じた直流の出力
電圧を生ずる回路とを具えた差動容量電圧変換回路。A pair of variable capacitors whose capacitance changes differentially according to the measured quantity, a sensor amplifier in which these pair of variable capacitors are connected to an input circuit, and a voltage obtained by turning on and off a DC voltage to the pair of capacitors in the same phase. means for applying voltage to the output of the sensor amplifier to obtain a voltage corresponding to the sum of capacitances of the pair of capacitors, and turning on and off the DC voltage to apply it to the pair of capacitors in opposite phases to the output of the sensor amplifier. means for obtaining a voltage corresponding to the difference in capacitance of the pair of capacitors; a first sample-and-hold circuit for sampling a voltage corresponding to the sum of the capacitances of the pair of capacitors; a second sample-and-hold circuit that samples the voltage held by the first and second sample-and-hold circuits; and a circuit that generates a DC output voltage according to the difference/sum of capacitances of a pair of capacitors based on the hold values of the first and second sample-and-hold circuits. Equipped with differential capacitance voltage conversion circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7726983U JPS59183611U (en) | 1983-05-23 | 1983-05-23 | Differential capacitance voltage conversion circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7726983U JPS59183611U (en) | 1983-05-23 | 1983-05-23 | Differential capacitance voltage conversion circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS59183611U true JPS59183611U (en) | 1984-12-06 |
Family
ID=30207301
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7726983U Pending JPS59183611U (en) | 1983-05-23 | 1983-05-23 | Differential capacitance voltage conversion circuit |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS59183611U (en) |
-
1983
- 1983-05-23 JP JP7726983U patent/JPS59183611U/en active Pending
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JPS59183611U (en) | Differential capacitance voltage conversion circuit | |
| JPS59183610U (en) | Capacitance voltage conversion circuit | |
| JPS59168168U (en) | Capacitance voltage conversion circuit | |
| JPS59168119U (en) | Capacitance voltage conversion circuit | |
| JPH0120650Y2 (en) | ||
| JPS59183609U (en) | Capacitance voltage conversion circuit | |
| JPS58191513U (en) | Capacitance voltage conversion circuit | |
| JPS60127509U (en) | capacitive converter | |
| JPH0718175Y2 (en) | Full wave rectifier circuit | |
| JPS58110813U (en) | Capacitance voltage conversion circuit | |
| JPS626751Y2 (en) | ||
| JPS58109071U (en) | Differential capacitance voltage conversion circuit | |
| JPS58191514U (en) | Capacitance change detection circuit | |
| JPS60134114U (en) | capacitive converter | |
| JPS588240U (en) | phase synchronized circuit | |
| JPS6020100U (en) | sample and hold circuit | |
| JPS59144515U (en) | capacitive converter | |
| JPS58153369U (en) | Measuring device using bridge | |
| JPS6032834U (en) | RC oscillation circuit | |
| JPS5819538U (en) | A-D converter for temperature controller | |
| JPS59119642U (en) | double pulse oscillator | |
| JPS59166123U (en) | Capacitance voltage conversion circuit | |
| JPS58184918U (en) | variable capacitance circuit | |
| JPH0787339B2 (en) | Synchronous detector | |
| JPS5981124U (en) | Variable phase attenuator circuit |