JPS54106255A - Voltage-current converting circuit - Google Patents
Voltage-current converting circuitInfo
- Publication number
- JPS54106255A JPS54106255A JP1247678A JP1247678A JPS54106255A JP S54106255 A JPS54106255 A JP S54106255A JP 1247678 A JP1247678 A JP 1247678A JP 1247678 A JP1247678 A JP 1247678A JP S54106255 A JPS54106255 A JP S54106255A
- Authority
- JP
- Japan
- Prior art keywords
- voltage
- emitter potential
- output
- resistors
- influence
- 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
Landscapes
- Arrangements For Transmission Of Measured Signals (AREA)
- Transmission And Conversion Of Sensor Element Output (AREA)
Abstract
PURPOSE: To facilitate a split range control by offsetting the influence from a voltage Ve, while floating the emitter potential of a transistor receptive of the output of an operational amplifier by the voltage Ve, thereby to simplify a main circuit.
CONSTITUTION: The emitter potential of an NPN transistor 8 is made to float by the voltage level Ve of a negative power source 7 through a resistor RE. The emitter potential is divided by means of resistors R1 and R2 and is fed negatively to the opposite phase input terminal of an operational amplifier 3. The voltage Ve is divided by means of resistors R3 and R4 and fed to the correct phase input terminal of the amplifier 3. By the relationship of R1 = R3 and R2 = R4, the influence from the voltage Ve is offset. As a result, the voltage Ve does not appear at the output so that an output current IO accurately proportional to the input voltage Ei can be obtained.
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1247678A JPS54106255A (en) | 1978-02-08 | 1978-02-08 | Voltage-current converting circuit |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1247678A JPS54106255A (en) | 1978-02-08 | 1978-02-08 | Voltage-current converting circuit |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS54106255A true JPS54106255A (en) | 1979-08-21 |
JPS61679B2 JPS61679B2 (en) | 1986-01-10 |
Family
ID=11806422
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP1247678A Granted JPS54106255A (en) | 1978-02-08 | 1978-02-08 | Voltage-current converting circuit |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS54106255A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS58208621A (en) * | 1982-05-30 | 1983-12-05 | Rohm Co Ltd | Voltage to current conversion circuit |
JP2007267324A (en) * | 2006-03-30 | 2007-10-11 | New Japan Radio Co Ltd | Current output circuit |
JP2009296283A (en) * | 2008-06-05 | 2009-12-17 | Yokogawa Electric Corp | Current output circuit |
-
1978
- 1978-02-08 JP JP1247678A patent/JPS54106255A/en active Granted
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS58208621A (en) * | 1982-05-30 | 1983-12-05 | Rohm Co Ltd | Voltage to current conversion circuit |
JPH0326435B2 (en) * | 1982-05-30 | 1991-04-10 | Rohm Kk | |
JP2007267324A (en) * | 2006-03-30 | 2007-10-11 | New Japan Radio Co Ltd | Current output circuit |
JP2009296283A (en) * | 2008-06-05 | 2009-12-17 | Yokogawa Electric Corp | Current output circuit |
Also Published As
Publication number | Publication date |
---|---|
JPS61679B2 (en) | 1986-01-10 |
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