JPS5669504A - Automatic resistance balancing circuit of strain measuring device - Google Patents

Automatic resistance balancing circuit of strain measuring device

Info

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
Application number
JP14508179A
Other languages
Japanese (ja)
Inventor
Yasuo Imanishi
Toshiaki Tsukada
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Yokogawa Electric Corp
Original Assignee
Yokogawa Hokushin Electric Corp
Yokogawa Electric Works Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Yokogawa Hokushin Electric Corp, Yokogawa Electric Works Ltd filed Critical Yokogawa Hokushin Electric Corp
Priority to JP14508179A priority Critical patent/JPS5669504A/en
Publication of JPS5669504A publication Critical patent/JPS5669504A/en
Pending legal-status Critical Current

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
JP14508179A 1979-11-09 1979-11-09 Automatic resistance balancing circuit of strain measuring device Pending JPS5669504A (en)

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)

* Cited by examiner, † Cited by third party
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)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4974079A (en) * 1972-11-14 1974-07-17

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4974079A (en) * 1972-11-14 1974-07-17

Cited By (2)

* Cited by examiner, † Cited by third party
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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