GB1519029A - Eletrical circuit means - Google Patents

Eletrical circuit means

Info

Publication number
GB1519029A
GB1519029A GB4501675A GB4501675A GB1519029A GB 1519029 A GB1519029 A GB 1519029A GB 4501675 A GB4501675 A GB 4501675A GB 4501675 A GB4501675 A GB 4501675A GB 1519029 A GB1519029 A GB 1519029A
Authority
GB
United Kingdom
Prior art keywords
output
bridge
stage
supply
provides
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.)
Expired
Application number
GB4501675A
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.)
Vogel and Halke
Original Assignee
Vogel and Halke
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 Vogel and Halke filed Critical Vogel and Halke
Publication of GB1519029A publication Critical patent/GB1519029A/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
    • G01D3/00—Indicating or recording apparatus with provision for the special purposes referred to in the subgroups
    • G01D3/028—Indicating or recording apparatus with provision for the special purposes referred to in the subgroups mitigating undesired influences, e.g. temperature, pressure
    • G01D3/036—Indicating or recording apparatus with provision for the special purposes referred to in the subgroups mitigating undesired influences, e.g. temperature, pressure on measuring arrangements themselves
    • G01D3/0365—Indicating or recording apparatus with provision for the special purposes referred to in the subgroups mitigating undesired influences, e.g. temperature, pressure on measuring arrangements themselves the undesired influence being measured using a separate sensor, which produces an influence related signal
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01G—WEIGHING
    • G01G23/00—Auxiliary devices for weighing apparatus
    • G01G23/18—Indicating devices, e.g. for remote indication; Recording devices; Scales, e.g. graduated
    • G01G23/36—Indicating the weight by electrical means, e.g. using photoelectric cells

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Amplifiers (AREA)
  • Measurement Of Length, Angles, Or The Like Using Electric Or Magnetic Means (AREA)
  • Measuring Instrument Details And Bridges, And Automatic Balancing Devices (AREA)
  • Indication And Recording Devices For Special Purposes And Tariff Metering Devices (AREA)

Abstract

1519029 Measuring impedance VOGEL & HALKE 30 Oct 1975 [13 Nov 1974] 45016/75 Heading G1U A measuring bridge 1 has a supply 4, 5 derived from a sine-wave generator 26, one lead 4 receiving a phase inverted voltage. The bridge output 6, 7 passes via two A.C. amplifiers 10, 11, a phasesensitive rectifier 15 and filter 16 to a stage 19 which provides an output 20 for a display. A sensor 43 provides a temperature responsive signal 44 to an amplitude control 46 which adjusts the sine-wave supply 26 amplitude, and to the output stage 19. The amplitude control ensures that the bridge output sensitivity is independent of temperature, and the zero-setting of the output 20 is similarly compensated at stage 19. A potentiometer 50 across the supply 4, 5 to the bridge provides a zerosetting voltage to the second A.C. amplifier 11 to adjust for any initial output from the bridge which may be force transducer in a scale balance. The amplifier 11 also has an integrating feedback 37 to remove any D.C. components in the output voltage.
GB4501675A 1974-11-13 1975-10-30 Eletrical circuit means Expired GB1519029A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19742453704 DE2453704C2 (en) 1974-11-13 1974-11-13 Circuit arrangement of a signal amplifier for a signal generated by means of a measuring bridge

Publications (1)

Publication Number Publication Date
GB1519029A true GB1519029A (en) 1978-07-26

Family

ID=5930664

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4501675A Expired GB1519029A (en) 1974-11-13 1975-10-30 Eletrical circuit means

Country Status (5)

Country Link
JP (1) JPS5168273A (en)
DE (1) DE2453704C2 (en)
FR (1) FR2291502A1 (en)
GB (1) GB1519029A (en)
IT (1) IT1043506B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2203558A (en) * 1987-04-10 1988-10-19 Seismograph Service Seismic geophone impedance measurement

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3925177A1 (en) * 1989-07-27 1991-02-07 Siemens Ag CIRCUIT ARRANGEMENT FOR TEMPERATURE-STABILITY REINFORCEMENT OF A DIFFERENTIAL VOLTAGE

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1516140C3 (en) * 1963-03-12 1973-09-27 N.V. Philips Gloeilampenfabrieken, Eindhoven (Niederlande). Device for measuring conductivities
GB1367884A (en) * 1970-09-30 1974-09-25 Mullard Ltd Temperature compensating circuits for photoconductive cells
DE2250196B2 (en) * 1972-10-13 1974-08-29 Metrawatt Gmbh, 8500 Nuernberg Circuit for compensation of the temperature influence in the case of conductivity or Resistance measurement
DE2258613C3 (en) * 1972-11-30 1978-09-28 Philips Patentverwaltung Gmbh, 2000 Hamburg Circuit arrangement for converting a detuning of a resistor bridge into a proportional frequency change of an RC oscillator

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2203558A (en) * 1987-04-10 1988-10-19 Seismograph Service Seismic geophone impedance measurement
GB2203558B (en) * 1987-04-10 1991-08-14 Seismograph Service Seismic geophone test apparatus

Also Published As

Publication number Publication date
DE2453704C2 (en) 1981-05-27
IT1043506B (en) 1980-02-29
DE2453704B1 (en) 1976-01-15
FR2291502B1 (en) 1982-06-25
JPS5168273A (en) 1976-06-12
FR2291502A1 (en) 1976-06-11

Similar Documents

Publication Publication Date Title
GB1282776A (en) Linearizing circuit for bridge-connected transducers
GB1533812A (en) Temperature measuring apparatus
GB1273915A (en) Process and device for correcting the non-linear variation of a signal as a function of a measured magnitude
GB1023042A (en) Improvements in or relating to pressure responsive apparatus
MY107009A (en) Apparatus and method for a temperature compensation of a catheter tip pressure transducer
GB1591620A (en) Signal-conditioning circuits
US3271669A (en) Alternating current diode loop capacitance measurement circuits
KR880701362A (en) Circuit device for measuring mechanical deformation
GB1407455A (en) Drift corrector for transducers
ES460838A1 (en) Composite transducer
GB1103231A (en) Improvements in and relating to a method and system for measuring the property of a dielectric material
GB1519029A (en) Eletrical circuit means
ATE30642T1 (en) CIRCUIT WITH MAGNETIC FIELD SENSOR FOR MEASURING A MAGNETIC FIELD.
GB1287024A (en) A strain measuring and display system including a strain gage transducer bridge circuit arrangement
GB994999A (en) Servo systems
GB1376152A (en) Capacitance measuring circuit
GB1518148A (en) Measuring apparatus
GB1365406A (en) Servo apparatus
GB2022255A (en) Acoustic measuring instruments e.g. flowmeters
GB1472596A (en) Method and apparatus for measuring the apparent power fed to an alternating current consumer
GB1523648A (en) Apparatus for determining a power function
GB1421337A (en) Apparatus for detecting variations in the magnitudes of physical quantities
GB1158001A (en) Improvements in or relating to Condition Responsive Bridge Circuits
JPS578425A (en) Pressure detector
JPS5748607A (en) Pressure transducer

Legal Events

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