JPS57191565A - Power method circuit for phase difference - Google Patents

Power method circuit for phase difference

Info

Publication number
JPS57191565A
JPS57191565A JP7740681A JP7740681A JPS57191565A JP S57191565 A JPS57191565 A JP S57191565A JP 7740681 A JP7740681 A JP 7740681A JP 7740681 A JP7740681 A JP 7740681A JP S57191565 A JPS57191565 A JP S57191565A
Authority
JP
Japan
Prior art keywords
phi
phase
circuit
power method
circuits
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
JP7740681A
Other languages
Japanese (ja)
Inventor
Kenzo Akamatsu
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.)
Mitsubishi Electric Corp
Original Assignee
Mitsubishi Electric Corp
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 Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Priority to JP7740681A priority Critical patent/JPS57191565A/en
Publication of JPS57191565A publication Critical patent/JPS57191565A/en
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R25/00—Arrangements for measuring phase angle between a voltage and a current or between voltages or currents

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Measuring Phase Differences (AREA)

Abstract

PURPOSE:To obtain a power method circuit for phase difference which can be utilized effectively for the phi-cosphi conversion, etc., of a power factor transducer, by providing plural lines of multiplying circuits each consisting of a switch circuit controlled by the output of a phase discriminating circuit and an averaging circuit. CONSTITUTION:Inputs to input terminals 1 and 2 are inputted through comparators 11 and 12 to a phase discriminating circuit 13, whose exclusive OR output is applied to control terminals of switches S1-S4. When the phase discrimination output is at a high level, the switches S1-S4 turn on to allow a reference DC voltage Ez and outputs of averaging circuits A1-A3 to pass through them respectively, and the circuits A1-A3 remove AC components. Consequently, DC voltage proportional to phase differences phi, phi<2>, phi<3> and phi<4>, namely, outputs proportional to power method of the phase differences appear at terminals, 21-24.
JP7740681A 1981-05-20 1981-05-20 Power method circuit for phase difference Pending JPS57191565A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7740681A JPS57191565A (en) 1981-05-20 1981-05-20 Power method circuit for phase difference

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7740681A JPS57191565A (en) 1981-05-20 1981-05-20 Power method circuit for phase difference

Publications (1)

Publication Number Publication Date
JPS57191565A true JPS57191565A (en) 1982-11-25

Family

ID=13633022

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7740681A Pending JPS57191565A (en) 1981-05-20 1981-05-20 Power method circuit for phase difference

Country Status (1)

Country Link
JP (1) JPS57191565A (en)

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