JPS5694811A - Electric charge detecting circuit - Google Patents
Electric charge detecting circuitInfo
- Publication number
- JPS5694811A JPS5694811A JP17236079A JP17236079A JPS5694811A JP S5694811 A JPS5694811 A JP S5694811A JP 17236079 A JP17236079 A JP 17236079A JP 17236079 A JP17236079 A JP 17236079A JP S5694811 A JPS5694811 A JP S5694811A
- Authority
- JP
- Japan
- Prior art keywords
- electric charge
- amplifiers
- capacitor
- terminals
- output
- 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.)
- Granted
Links
Abstract
PURPOSE: To prevent a connection between the output terminals of the CS amplifiers of two systems, by using the electric charge sensing amplifiers (CS amplifiers) of three systems, the electric charge holding capacitor, the inverting capacitor and the switching circuit.
CONSTITUTION: The electric charge input is applied to the input terminals of the 1st and 2nd CS amplifiers 1 and 2, and the output voltages V1 and V2 are caused at the output terminals. Under such conditions, the change-over switches SWa∼SWc are switched to the terminals 32, 42 and 53. As a result, the capacitors K1 and K2 are charged to the voltages V1 and V2. Thereafter, the change-over switch is switched to apply the voltage of the capacitor K1 to the 3rd CS amplifier 7. On the other hand, the terminal connected to the switch SWb is earthed in the capacitor K2 with the other terminal detached from the earth. Thus the voltage of the terminal connected to the switch SWc becomes -V2 to be applied to the amplifier 7. As a result, the output voltage proportional to V1-V2 can be obtained.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP54172360A JPS5928288B2 (en) | 1979-12-27 | 1979-12-27 | Charge detection circuit |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP54172360A JPS5928288B2 (en) | 1979-12-27 | 1979-12-27 | Charge detection circuit |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5694811A true JPS5694811A (en) | 1981-07-31 |
JPS5928288B2 JPS5928288B2 (en) | 1984-07-12 |
Family
ID=15940453
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP54172360A Expired JPS5928288B2 (en) | 1979-12-27 | 1979-12-27 | Charge detection circuit |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5928288B2 (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH01223808A (en) * | 1988-01-25 | 1989-09-06 | Avl Ges Verbrennungskraftmas & Messtech Mbh | Charge amplifier |
US5519323A (en) * | 1992-05-15 | 1996-05-21 | Fraunhofer-Gesellschaft Zur Forderung Der Angewandten Forschung E.V. | Integrable conductivity measuring device |
US5543717A (en) * | 1991-04-20 | 1996-08-06 | Fraunhofer-Gesellschaft Zur Forderung Der Angewandten Forshung E.V. | Integrable conductivity measuring device |
JP2007129719A (en) * | 2005-11-02 | 2007-05-24 | Marvell World Trade Ltd | Amplifier with compensation |
-
1979
- 1979-12-27 JP JP54172360A patent/JPS5928288B2/en not_active Expired
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH01223808A (en) * | 1988-01-25 | 1989-09-06 | Avl Ges Verbrennungskraftmas & Messtech Mbh | Charge amplifier |
US5543717A (en) * | 1991-04-20 | 1996-08-06 | Fraunhofer-Gesellschaft Zur Forderung Der Angewandten Forshung E.V. | Integrable conductivity measuring device |
US5519323A (en) * | 1992-05-15 | 1996-05-21 | Fraunhofer-Gesellschaft Zur Forderung Der Angewandten Forschung E.V. | Integrable conductivity measuring device |
JP2007129719A (en) * | 2005-11-02 | 2007-05-24 | Marvell World Trade Ltd | Amplifier with compensation |
Also Published As
Publication number | Publication date |
---|---|
JPS5928288B2 (en) | 1984-07-12 |
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