JPS5769258A - Automatic capacity balancing circuit device for ac bridge - Google Patents

Automatic capacity balancing circuit device for ac bridge

Info

Publication number
JPS5769258A
JPS5769258A JP14670080A JP14670080A JPS5769258A JP S5769258 A JPS5769258 A JP S5769258A JP 14670080 A JP14670080 A JP 14670080A JP 14670080 A JP14670080 A JP 14670080A JP S5769258 A JPS5769258 A JP S5769258A
Authority
JP
Japan
Prior art keywords
output
circuit
bridge
signal
hold
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
JP14670080A
Other languages
Japanese (ja)
Inventor
Junichiro Ibuki
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.)
NIHON DENSHI KAGAKU KK
Nippon Denshi Kagaku Co Ltd
Original Assignee
NIHON DENSHI KAGAKU KK
Nippon Denshi Kagaku Co 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 NIHON DENSHI KAGAKU KK, Nippon Denshi Kagaku Co Ltd filed Critical NIHON DENSHI KAGAKU KK
Priority to JP14670080A priority Critical patent/JPS5769258A/en
Publication of JPS5769258A publication Critical patent/JPS5769258A/en
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R27/00—Arrangements for measuring resistance, reactance, impedance, or electric characteristics derived therefrom
    • G01R27/02—Measuring real or complex resistance, reactance, impedance, or other two-pole characteristics derived therefrom, e.g. time constant
    • G01R27/08—Measuring resistance by measuring both voltage and current
    • G01R27/10—Measuring resistance by measuring both voltage and current using two-coil or crossed-coil instruments forming quotient

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Measuring Instrument Details And Bridges, And Automatic Balancing Devices (AREA)

Abstract

PURPOSE:To implement the automatic capacity balance electronically, by performing the sample and hold of the output of a bridge in synchronization with the zero crossing of an AC signal source, and applying an AC signal corresponding to said output to the bridge output in a reverse phase. CONSTITUTION:The output of a sine wave oscillator 2 is applied to a bridge circuit 1 via an amplifying circuit 3. In the mean time, a pulse generator 8 generates a pulse signal at a rise time point of a rectangular waveform signal from a waveform shaping circuit 7. A sample and hold circuit 9 performs the sample and hold of the output of the bridge circuit 1. The reactive component sensing signal is inputted to a multiplying circuit 11 via an integrating circuit 10. Then an AC signal voltage which is 180 deg. out of phase with respect to the outpt of the sine wave oscillator 2 and is proportional to the sampled and hold voltage is applied to the output side of the bridge circuit 1 via a capacitor C. Thus the reactive component of the output of the bridge circuit is cancelled. In this device, the capacity can be blanced during the measurement with good response.
JP14670080A 1980-10-20 1980-10-20 Automatic capacity balancing circuit device for ac bridge Pending JPS5769258A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP14670080A JPS5769258A (en) 1980-10-20 1980-10-20 Automatic capacity balancing circuit device for ac bridge

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP14670080A JPS5769258A (en) 1980-10-20 1980-10-20 Automatic capacity balancing circuit device for ac bridge

Publications (1)

Publication Number Publication Date
JPS5769258A true JPS5769258A (en) 1982-04-27

Family

ID=15413571

Family Applications (1)

Application Number Title Priority Date Filing Date
JP14670080A Pending JPS5769258A (en) 1980-10-20 1980-10-20 Automatic capacity balancing circuit device for ac bridge

Country Status (1)

Country Link
JP (1) JPS5769258A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6781430B2 (en) * 2001-12-14 2004-08-24 Alps Electric Co., Ltd. Clock signal supply circuit with odd harmonic leakage prevention feature

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5690264A (en) * 1979-12-24 1981-07-22 Nippon Denki Sanei Kk Measuring device of bridge

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5690264A (en) * 1979-12-24 1981-07-22 Nippon Denki Sanei Kk Measuring device of bridge

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6781430B2 (en) * 2001-12-14 2004-08-24 Alps Electric Co., Ltd. Clock signal supply circuit with odd harmonic leakage prevention feature

Similar Documents

Publication Publication Date Title
ATE18610T1 (en) ELECTRONIC DEVICE FOR DETECTING REACTIVE POWER AND USE OF THIS DEVICE.
JPS5769258A (en) Automatic capacity balancing circuit device for ac bridge
SE7510955L (en) WAY TO FAST DETECT AND EVALUATE THE QUADRATIC AVERAGE WORLD OF METAL QUANTITIES IN SINGLE OR MULTIPHASE AC AND Coupling DEVICE FOR PERFORMING THE SET
US4306297A (en) Apparatus for measuring the vector voltage ratio of two A.C. signals
SU1023246A1 (en) Harmonic signal frequency and amplitude measuring device
JPS5786767A (en) Detection circuit for rate of higher harmonic component
JPS5722568A (en) Fast peak detection circuit
JPS5719679A (en) Measuring circuit for encoder characteristics
SU1538137A1 (en) Method of determining amplitude of harmonically changing physical quantity
SU974105A1 (en) Strain gauge device
SU868603A1 (en) Periodic signal swing-to-voltage converter
SU648917A1 (en) Passive two-pole network parameter meter
JPS5763459A (en) Reactive power meter
FR2363113A1 (en) Sensitive AC bridge for instrumentation - has square wave fed to resistance bridge and phase detector sensing balance
SU676948A1 (en) Arrangement for measuring symmetrical components of three-phase ac voltage system
SU868601A1 (en) Method of automatic balancing of ac bridge for measuring one component of complex conductivity
SU839480A1 (en) Instrument for determining parameters of central hemodynamics
SU605093A1 (en) Electromagnetic rate-of-flow meter with prequency output
SU1674003A1 (en) Signal amplitude measurement method
SU800899A1 (en) Converter of three-element two-pole network parameters into voltage
SU661379A1 (en) Single-channel sum-differential digital wattmeter
SU1241141A1 (en) Method of measuring frequency of harmonic signals
SU1564557A1 (en) Method of measuring signal amplitude
SU842592A1 (en) Device for measuring resistance increments
SU718800A2 (en) Method of determining frequency characteristics of automatic control systems