JPS564061A - Phase difference measuring instrument - Google Patents

Phase difference measuring instrument

Info

Publication number
JPS564061A
JPS564061A JP7866279A JP7866279A JPS564061A JP S564061 A JPS564061 A JP S564061A JP 7866279 A JP7866279 A JP 7866279A JP 7866279 A JP7866279 A JP 7866279A JP S564061 A JPS564061 A JP S564061A
Authority
JP
Japan
Prior art keywords
signal
phase
phase difference
output
difference
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
JP7866279A
Other languages
Japanese (ja)
Inventor
Yutaka Sato
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.)
Nikon Corp
Nippon Chemical Industrial Co Ltd
Original Assignee
Nippon Chemical Industrial Co Ltd
Nippon Kogaku KK
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 Nippon Chemical Industrial Co Ltd, Nippon Kogaku KK filed Critical Nippon Chemical Industrial Co Ltd
Priority to JP7866279A priority Critical patent/JPS564061A/en
Publication of JPS564061A publication Critical patent/JPS564061A/en
Pending legal-status Critical Current

Links

Landscapes

  • Measuring Phase Differences (AREA)

Abstract

PURPOSE: To accurately measure the phase of an input signal by generating a signal having a predetermined phase relation with an input signal having much noise, and determining the phase difference between the specially generated signal and a reference signal.
CONSTITUTION: An input signal Si is supplied to a synchronous rectifier 2 to be subjected to synchronous rectification by an output based on a phase-shifted 1 reference signal Sr. A rectified output is amplified 3 and then fed back to the phase shifter 1 to control the same such that an output voltage from the rectifier 2 becomes zero. As a result, a signal SO having a predetermined difference from a phase angle of a signal component of the signal Si is outputted from the phase shifter 1. This output signal SO is supplied to a phase difference measuring circuit 4, where the phase difference between the signal SO and the signal Sr. Therefore, the phase difference between the signals Si, Sr can be determined accurately.
COPYRIGHT: (C)1981,JPO&Japio
JP7866279A 1979-06-23 1979-06-23 Phase difference measuring instrument Pending JPS564061A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7866279A JPS564061A (en) 1979-06-23 1979-06-23 Phase difference measuring instrument

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7866279A JPS564061A (en) 1979-06-23 1979-06-23 Phase difference measuring instrument

Publications (1)

Publication Number Publication Date
JPS564061A true JPS564061A (en) 1981-01-16

Family

ID=13668063

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7866279A Pending JPS564061A (en) 1979-06-23 1979-06-23 Phase difference measuring instrument

Country Status (1)

Country Link
JP (1) JPS564061A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5882140A (en) * 1981-11-11 1983-05-17 Ono Sokki Co Ltd Phase measurement unit in balance test machine
JPS59173771A (en) * 1983-03-23 1984-10-01 Toshiba Corp Electric meter
JPS63100381A (en) * 1986-10-09 1988-05-02 Sony Tektronix Corp Phase detector
JPH01198111A (en) * 1988-02-02 1989-08-09 Nec Corp Comparator
JPH0533560A (en) * 1991-07-26 1993-02-09 Tooma:Kk Wooden door

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5882140A (en) * 1981-11-11 1983-05-17 Ono Sokki Co Ltd Phase measurement unit in balance test machine
JPS59173771A (en) * 1983-03-23 1984-10-01 Toshiba Corp Electric meter
JPS6356504B2 (en) * 1983-03-23 1988-11-08 Tokyo Shibaura Electric Co
JPS63100381A (en) * 1986-10-09 1988-05-02 Sony Tektronix Corp Phase detector
JPH01198111A (en) * 1988-02-02 1989-08-09 Nec Corp Comparator
JPH0533560A (en) * 1991-07-26 1993-02-09 Tooma:Kk Wooden door

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