JPS5723330A - Phase detector - Google Patents

Phase detector

Info

Publication number
JPS5723330A
JPS5723330A JP9781380A JP9781380A JPS5723330A JP S5723330 A JPS5723330 A JP S5723330A JP 9781380 A JP9781380 A JP 9781380A JP 9781380 A JP9781380 A JP 9781380A JP S5723330 A JPS5723330 A JP S5723330A
Authority
JP
Japan
Prior art keywords
signal
phase
comparison
annihilates
flop
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
JP9781380A
Other languages
Japanese (ja)
Inventor
Shoji Saito
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.)
Toshiba Corp
Original Assignee
Toshiba Corp
Tokyo Shibaura Electric 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 Toshiba Corp, Tokyo Shibaura Electric Co Ltd filed Critical Toshiba Corp
Priority to JP9781380A priority Critical patent/JPS5723330A/en
Publication of JPS5723330A publication Critical patent/JPS5723330A/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)
  • Manipulation Of Pulses (AREA)
  • Stabilization Of Oscillater, Synchronisation, Frequency Synthesizers (AREA)

Abstract

PURPOSE:To prevent deterioration of phase detection accuracy, which is caused by a delay time of an element, etc., by directly detecting a phase shift of an input signal and a comparison signal, by an output of a monostable multivibrating circuit which is set by the input signal, and the comparison signal. CONSTITUTION:A monostable multivibrator 11 is set for a constant time by an input signal, and generates a signal A. If the signal A annihilates before a comparison signal B is generated, a flip-flop 12 is set from fall of the signal A till generation of the signal B, and forms a signal X showing that phase is proceeding. On the other hand, if the comparison signal is generated before the signal A annihilates, a flip-flop 13 is set from rise of the signal B till fall of the signal A, and forms a signal Y showing that phase is lagging. A low-pass filter 6 controls oscillation frequency of a voltage control oscillator 7 in accordance with both the signals X, Y.
JP9781380A 1980-07-17 1980-07-17 Phase detector Pending JPS5723330A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP9781380A JPS5723330A (en) 1980-07-17 1980-07-17 Phase detector

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9781380A JPS5723330A (en) 1980-07-17 1980-07-17 Phase detector

Publications (1)

Publication Number Publication Date
JPS5723330A true JPS5723330A (en) 1982-02-06

Family

ID=14202190

Family Applications (1)

Application Number Title Priority Date Filing Date
JP9781380A Pending JPS5723330A (en) 1980-07-17 1980-07-17 Phase detector

Country Status (1)

Country Link
JP (1) JPS5723330A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01268221A (en) * 1988-04-19 1989-10-25 Matsushita Electric Ind Co Ltd Phase comparator

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01268221A (en) * 1988-04-19 1989-10-25 Matsushita Electric Ind Co Ltd Phase comparator

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