GB2009947A - Bridge circuit - Google Patents

Bridge circuit

Info

Publication number
GB2009947A
GB2009947A GB7834907A GB7834907A GB2009947A GB 2009947 A GB2009947 A GB 2009947A GB 7834907 A GB7834907 A GB 7834907A GB 7834907 A GB7834907 A GB 7834907A GB 2009947 A GB2009947 A GB 2009947A
Authority
GB
United Kingdom
Prior art keywords
bridge circuit
strain
bridge
amplified
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.)
Granted
Application number
GB7834907A
Other versions
GB2009947B (en
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.)
TDK Micronas GmbH
ITT Inc
Original Assignee
Deutsche ITT Industries GmbH
ITT Industries Inc
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 Deutsche ITT Industries GmbH, ITT Industries Inc filed Critical Deutsche ITT Industries GmbH
Publication of GB2009947A publication Critical patent/GB2009947A/en
Application granted granted Critical
Publication of GB2009947B publication Critical patent/GB2009947B/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
    • G01L1/00—Measuring force or stress, in general
    • G01L1/20—Measuring force or stress, in general by measuring variations in ohmic resistance of solid materials or of electrically-conductive fluids; by making use of electrokinetic cells, i.e. liquid-containing cells wherein an electrical potential is produced or varied upon the application of stress
    • G01L1/22—Measuring force or stress, in general by measuring variations in ohmic resistance of solid materials or of electrically-conductive fluids; by making use of electrokinetic cells, i.e. liquid-containing cells wherein an electrical potential is produced or varied upon the application of stress using resistance strain gauges
    • G01L1/225—Measuring circuits therefor
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R17/00—Measuring arrangements involving comparison with a reference value, e.g. bridge
    • G01R17/10—AC or DC measuring bridges

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Measurement Of Length, Angles, Or The Like Using Electric Or Magnetic Means (AREA)
  • Measurement Of Force In General (AREA)
  • Measuring Fluid Pressure (AREA)

Abstract

The out-of-balance voltage from a strain gauge 71, 72, bridge through which the total current is maintained constant by an amplifier 67, is amplified by a common mode rejection arrangement 66, 68, to control a load 115, 118, so that the current drawn from a battery, which may be at a remote point for 2-wire telemetry, varies linearly with the strain being measured. <IMAGE>
GB7834907A 1977-09-28 1978-08-29 Bridge circuit Expired GB2009947B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US83745277A 1977-09-28 1977-09-28

Publications (2)

Publication Number Publication Date
GB2009947A true GB2009947A (en) 1979-06-20
GB2009947B GB2009947B (en) 1982-03-24

Family

ID=25274484

Family Applications (1)

Application Number Title Priority Date Filing Date
GB7834907A Expired GB2009947B (en) 1977-09-28 1978-08-29 Bridge circuit

Country Status (3)

Country Link
CA (1) CA1117598A (en)
DE (1) DE2841491A1 (en)
GB (1) GB2009947B (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS55113904A (en) * 1979-02-26 1980-09-02 Hitachi Ltd Method of zero point temperature compensation for strain-electric signal transducer
US4444056A (en) * 1982-05-05 1984-04-24 Itt Corporation Temperature compensated circuit
DE3810456C2 (en) * 1988-03-26 1994-09-01 Hottinger Messtechnik Baldwin Method for reducing an error in a transmitter and device therefor
US4890497A (en) * 1988-08-25 1990-01-02 Dwyer Instruments, Inc. Differential pressure gauge transmitter
CN105300269B (en) * 2015-11-16 2019-10-08 广东省智能制造研究所 A kind of wireless accurate strain gauge means and a kind of wireless accurate strain measurement method

Also Published As

Publication number Publication date
DE2841491A1 (en) 1979-04-05
CA1117598A (en) 1982-02-02
GB2009947B (en) 1982-03-24

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee