JPS5669504A - Automatic resistance balancing circuit of strain measuring device - Google Patents
Automatic resistance balancing circuit of strain measuring deviceInfo
- Publication number
- JPS5669504A JPS5669504A JP14508179A JP14508179A JPS5669504A JP S5669504 A JPS5669504 A JP S5669504A JP 14508179 A JP14508179 A JP 14508179A JP 14508179 A JP14508179 A JP 14508179A JP S5669504 A JPS5669504 A JP S5669504A
- Authority
- JP
- Japan
- Prior art keywords
- converter
- counter
- output
- clock
- balancing 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
Landscapes
- Measurement Of Length, Angles, Or The Like Using Electric Or Magnetic Means (AREA)
Abstract
PURPOSE: To obtain an automatic resistance balancing circuit having no influence of mechanical vibration, excellent in stability for a long time and little in residual error by constituting a specific circuit by the use of a clock counter, a multiplier type DA converter and the like.
CONSTITUTION: A comparator 21 inputted a positive voltage outputs L level and a counter 22 synchronizes with an external clock to thereby continue the subtraction counting operation. In accordance with the counting value thereof, the output of an multiplier type DA converter 23 changes in a direction of negative, added by output of an amplifier 7 in an adder 24 and gradually approaches to 0. When reaching to ≤0, the counter 22 is changed over to an adding operation and the counting value is increased in a positive direction. Accordingly, an input of the comparator 21 becomes positive voltage again and repeats the same action. An output of a wave detecting circuit 8 oscillates in a range determined by a resolution of DA converter 23 near 0. Under this condition by stopping the clock input, the balanced condition is maintained.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP14508179A JPS5669504A (en) | 1979-11-09 | 1979-11-09 | Automatic resistance balancing circuit of strain measuring device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP14508179A JPS5669504A (en) | 1979-11-09 | 1979-11-09 | Automatic resistance balancing circuit of strain measuring device |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5669504A true JPS5669504A (en) | 1981-06-10 |
Family
ID=15376935
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP14508179A Pending JPS5669504A (en) | 1979-11-09 | 1979-11-09 | Automatic resistance balancing circuit of strain measuring device |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5669504A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6195201A (en) * | 1984-10-16 | 1986-05-14 | Kyowa Dengiyou:Kk | Balance adjusting circuit of strain meter |
JPS6329203A (en) * | 1986-07-23 | 1988-02-06 | Yokogawa Electric Corp | Distortion amplifier |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS4974079A (en) * | 1972-11-14 | 1974-07-17 |
-
1979
- 1979-11-09 JP JP14508179A patent/JPS5669504A/en active Pending
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS4974079A (en) * | 1972-11-14 | 1974-07-17 |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6195201A (en) * | 1984-10-16 | 1986-05-14 | Kyowa Dengiyou:Kk | Balance adjusting circuit of strain meter |
JPS6329203A (en) * | 1986-07-23 | 1988-02-06 | Yokogawa Electric Corp | Distortion amplifier |
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