JPS55129763A - Selection circuit of voltage coefficient for resistance - Google Patents
Selection circuit of voltage coefficient for resistanceInfo
- Publication number
- JPS55129763A JPS55129763A JP3816179A JP3816179A JPS55129763A JP S55129763 A JPS55129763 A JP S55129763A JP 3816179 A JP3816179 A JP 3816179A JP 3816179 A JP3816179 A JP 3816179A JP S55129763 A JPS55129763 A JP S55129763A
- Authority
- JP
- Japan
- Prior art keywords
- voltage
- fed
- resistance
- resistances
- amplifier
- 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
- Testing Relating To Insulation (AREA)
- Measurement Of Resistance Or Impedance (AREA)
Abstract
PURPOSE: To enable selection with good accuracy in a short time, by the impedance conversion through the application of low and high voltage to the selected resistance and selecting the value of voltage coefficient through the comparison of output voltage obtained.
CONSTITUTION: The output voltage of the OP amplifier 30 is fed to the variable resistance 21, resistances 22 and 23 and variable resistance 24 for voltage coefficient selection range set, when a high voltage is fed to the selected resistance 12. The charging voltage is fed to the capacitor 40 when a low voltage is fed to the resistancs 12, and the voltage dividing this voltage with the resistances 25 and 26 by means of the OP amplifier 35 for impedance conversion, and the divided voltage of the resistances 21, 22, 23 and 24 are fed to the OP amplifier 36 for comparator, and LED 41 illuminates when the resistance 12 is within the voltage coefficient numeral selection range set value with the AND gate 39.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP3816179A JPS55129763A (en) | 1979-03-29 | 1979-03-29 | Selection circuit of voltage coefficient for resistance |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP3816179A JPS55129763A (en) | 1979-03-29 | 1979-03-29 | Selection circuit of voltage coefficient for resistance |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS55129763A true JPS55129763A (en) | 1980-10-07 |
Family
ID=12517675
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP3816179A Pending JPS55129763A (en) | 1979-03-29 | 1979-03-29 | Selection circuit of voltage coefficient for resistance |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS55129763A (en) |
-
1979
- 1979-03-29 JP JP3816179A patent/JPS55129763A/en active Pending
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