JPS5773679A - Frequency discriminating circuit - Google Patents

Frequency discriminating circuit

Info

Publication number
JPS5773679A
JPS5773679A JP55150096A JP15009680A JPS5773679A JP S5773679 A JPS5773679 A JP S5773679A JP 55150096 A JP55150096 A JP 55150096A JP 15009680 A JP15009680 A JP 15009680A JP S5773679 A JPS5773679 A JP S5773679A
Authority
JP
Japan
Prior art keywords
output
circuit
signal
period
inputted
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.)
Granted
Application number
JP55150096A
Other languages
Japanese (ja)
Other versions
JPS6129673B2 (en
Inventor
Takashi Furuhata
Kenji 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.)
Hitachi Ltd
Original Assignee
Hitachi 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 Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP55150096A priority Critical patent/JPS5773679A/en
Publication of JPS5773679A publication Critical patent/JPS5773679A/en
Publication of JPS6129673B2 publication Critical patent/JPS6129673B2/ja
Granted legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R23/00—Arrangements for measuring frequencies; Arrangements for analysing frequency spectra
    • G01R23/005—Circuits for comparing several input signals and for indicating the result of this comparison, e.g. equal, different, greater, smaller (comparing phase or frequency of 2 mutually independent oscillations in demodulators)

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Control Of Ac Motors In General (AREA)
  • Manipulation Of Pulses (AREA)

Abstract

PURPOSE:To remove the fundamental frequency component of an input signal from an error voltage completely by obtaining the error voltage by adding an output, obtained by discriminating an input signal in every period of a doubled signal, and an output one period delayed behing the former output together. CONSTITUTION:A sine-wave signal A supplied from a terminal 101 is shaped by a limiter amplifier 103 into a rectangular-wave signal P, which is inputted to a pulse generator 104 to output a pulse Q at rising and breaking parts of the signal P. Those pulses Q are inputted to a discriminating circuit 111 through a delay circuit 110 to discriminate its period error in every period of input pulses Q'. Then, the output E1 of the discriminating circuit 11 is inputted to a sample holding circuit 112 to be sampled and held by the pulses Q, and the output E1 of the discriminating circuit 111 and the output E2 of the sample holding circuit 112 are added together by an adding circuit 113. As a result, fundamental wave components leaking into the outpurs E1 and E2 are out of phase each other, so a discrimination output E0 from which the fundamental wave is removed completely is obtained.
JP55150096A 1980-10-28 1980-10-28 Frequency discriminating circuit Granted JPS5773679A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP55150096A JPS5773679A (en) 1980-10-28 1980-10-28 Frequency discriminating circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP55150096A JPS5773679A (en) 1980-10-28 1980-10-28 Frequency discriminating circuit

Publications (2)

Publication Number Publication Date
JPS5773679A true JPS5773679A (en) 1982-05-08
JPS6129673B2 JPS6129673B2 (en) 1986-07-08

Family

ID=15489418

Family Applications (1)

Application Number Title Priority Date Filing Date
JP55150096A Granted JPS5773679A (en) 1980-10-28 1980-10-28 Frequency discriminating circuit

Country Status (1)

Country Link
JP (1) JPS5773679A (en)

Also Published As

Publication number Publication date
JPS6129673B2 (en) 1986-07-08

Similar Documents

Publication Publication Date Title
SE8302216L (en) EQUIPMENT FOR ELECTRIC MEASUREMENT OF ELECTRICAL IMPULSE SIGNALS
JPS5773679A (en) Frequency discriminating circuit
JPS57210718A (en) Signal change detecting circuit
JPS5232655A (en) Logic low-pass filter circuit
JPS57131118A (en) Pulse generator
JPS5218154A (en) Frequency addition circuit
JPS5545280A (en) Auto-search tuning circuit
JPS55150028A (en) Clock circuit for digital operation processor
SU575766A1 (en) Pulse shaper
SU855977A1 (en) Device for delaying square-wave pulses
JPS5568739A (en) Preset circuit
JPS56168572A (en) Fish direction finder
SU815891A1 (en) Pulse selector by repetition frequency
SU696614A1 (en) Correlation detector
JPS5780885A (en) Television receiver
JPS5728448A (en) Timing extraction system
JPS5246750A (en) Frequency detection circuit
JPS5669905A (en) Fm demodulator
SU568151A1 (en) Digital filter
SU1084979A1 (en) Sawtooth voltage generator
JPS55137745A (en) Detection system of frame synchronizing signal
JPS5744328A (en) Pulse extractor
JPS53144240A (en) Signal detection circuit
JPS5749868A (en) Signal detector
JPS5775305A (en) Erequency discriminating circuit