JPS54126565A - Resistance-electric signal converter - Google Patents
Resistance-electric signal converterInfo
- Publication number
- JPS54126565A JPS54126565A JP3311078A JP3311078A JPS54126565A JP S54126565 A JPS54126565 A JP S54126565A JP 3311078 A JP3311078 A JP 3311078A JP 3311078 A JP3311078 A JP 3311078A JP S54126565 A JPS54126565 A JP S54126565A
- Authority
- JP
- Japan
- Prior art keywords
- thru
- operational amplifier
- resistances
- wiring
- wirings
- 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
- Measuring Temperature Or Quantity Of Heat (AREA)
- Arrangements For Transmission Of Measured Signals (AREA)
- Measurement Of Resistance Or Impedance (AREA)
Abstract
PURPOSE: To eliminate the effect of wiring resistances by using a converter consisting of a constant current source and two operational amplifier at the time of converting the resistance values of the 3-wire type resistor having a first wiring at one end of the resistor and second and third wirings commonly at the other end.
CONSTITUTION: A temperature measuring resistor 1 is connected by wirings L1 thru L3 to an electric signal converting part B and is supplied with a constant current from a constant current source 3. The wirings L1, L2 are connected to the positive phase terminals of a first operational amplifier A1 and a second operational amplifier A2, and the wiring L3 is connected to the common line COM of A1, A2. Divided voltages through resistances R1 thru R4 are respectively applied to the anti- phase terminals of A1, A2. As a result, by selecting the relations of the resistances R1 thru R4 so as to satisfy the specific conditions, the output voltage proportional to the resistance value of the temperature measuring resistor 1 may be obtained as the output of the operational amplifier A1 without the influence by wiring resistances r1 thru r3.
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP3311078A JPS54126565A (en) | 1978-03-24 | 1978-03-24 | Resistance-electric signal converter |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP3311078A JPS54126565A (en) | 1978-03-24 | 1978-03-24 | Resistance-electric signal converter |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS54126565A true JPS54126565A (en) | 1979-10-01 |
Family
ID=12377509
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP3311078A Pending JPS54126565A (en) | 1978-03-24 | 1978-03-24 | Resistance-electric signal converter |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS54126565A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS56137255A (en) * | 1980-03-31 | 1981-10-27 | Hitachi Ltd | Measuring device of multipoint resistance variation |
-
1978
- 1978-03-24 JP JP3311078A patent/JPS54126565A/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS56137255A (en) * | 1980-03-31 | 1981-10-27 | Hitachi Ltd | Measuring device of multipoint resistance variation |
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