JPS562515A - Signal amplifying circuit used for load cell balance - Google Patents
Signal amplifying circuit used for load cell balanceInfo
- Publication number
- JPS562515A JPS562515A JP7795079A JP7795079A JPS562515A JP S562515 A JPS562515 A JP S562515A JP 7795079 A JP7795079 A JP 7795079A JP 7795079 A JP7795079 A JP 7795079A JP S562515 A JPS562515 A JP S562515A
- Authority
- JP
- Japan
- Prior art keywords
- amplifier
- input terminal
- load cell
- resistances
- amplifying 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
Abstract
PURPOSE: To make it possible to secure the stability of an open loop gain to a temperature while lessening an open loop gain error as much as possible by employing the two-state constitution of operational amplifiers.
CONSTITUTION: A couple of operational amplifiers Q1 and Q2 are provided at the front and rear stages, and the output terminal of front-stage amplifier Q1 is connected to uninverted input terminal "+" of rear-stage amplifier Q2. Then, the output terminal of amplifier Q2 is grounded via the series circuit of resistances R1 and R2 and further grounded via resistances R3 and R4 in series. Next, the connection point between resistances R1 and R2 is connected to inverted input terminal "-" of amplifier Q1, and that between R3 and R4 to inverted input terminal "-" of amplifier Q2. Then, a load cell output is input to uninverted input terminal "+" of amplifier Q1 and an amplified signal is led out of amplifier Q2 via its output terminal. Thus, an open gain error can be lessened and stability to a temperature can be secured.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP7795079A JPS562515A (en) | 1979-06-20 | 1979-06-20 | Signal amplifying circuit used for load cell balance |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP7795079A JPS562515A (en) | 1979-06-20 | 1979-06-20 | Signal amplifying circuit used for load cell balance |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS562515A true JPS562515A (en) | 1981-01-12 |
Family
ID=13648293
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP7795079A Pending JPS562515A (en) | 1979-06-20 | 1979-06-20 | Signal amplifying circuit used for load cell balance |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS562515A (en) |
-
1979
- 1979-06-20 JP JP7795079A patent/JPS562515A/en active Pending
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