JPS5595876A - Frequency detector - Google Patents

Frequency detector

Info

Publication number
JPS5595876A
JPS5595876A JP374579A JP374579A JPS5595876A JP S5595876 A JPS5595876 A JP S5595876A JP 374579 A JP374579 A JP 374579A JP 374579 A JP374579 A JP 374579A JP S5595876 A JPS5595876 A JP S5595876A
Authority
JP
Japan
Prior art keywords
circuit
mono
supplied
output
frequency
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
JP374579A
Other languages
Japanese (ja)
Inventor
Shinichiro Hayashi
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 JP374579A priority Critical patent/JPS5595876A/en
Publication of JPS5595876A publication Critical patent/JPS5595876A/en
Pending legal-status Critical Current

Links

Landscapes

  • Measuring Frequencies, Analyzing Spectra (AREA)

Abstract

PURPOSE: To obtain a high-accuracy detector featuring the facilitated setting of the detection range, by installing the circuit which detects that the measured frequency has become higher (lower) than a certain level of the set frequency.
CONSTITUTION: The measured frequency is supplied to FF circuit 3 via zero-cross comparator 2, and output 31 and 32 of circuit 3 are supplied to the reset terminal of counter 11 to which mono-multi 5 and oscillator 10 are connected via pulse production units 4 and 12. Then the output of multi 5 and counter 11 are supplied to AND circuit 8; while output 12 is supplied to AND circuit 17 through mono- multi 13 and OR circuit 16. Furthermore, the other input of circuit 17 is connected to unit 4, and circuits 8 and 17 are connected to mono-multi 9 and 18 each to obtain output 19 and 20. Thus the detection frequency can be set in an easy and continuous way by securing the control for the time constant circuit of mono-multi 5 and 13 each.
COPYRIGHT: (C)1980,JPO&Japio
JP374579A 1979-01-16 1979-01-16 Frequency detector Pending JPS5595876A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP374579A JPS5595876A (en) 1979-01-16 1979-01-16 Frequency detector

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP374579A JPS5595876A (en) 1979-01-16 1979-01-16 Frequency detector

Publications (1)

Publication Number Publication Date
JPS5595876A true JPS5595876A (en) 1980-07-21

Family

ID=11565729

Family Applications (1)

Application Number Title Priority Date Filing Date
JP374579A Pending JPS5595876A (en) 1979-01-16 1979-01-16 Frequency detector

Country Status (1)

Country Link
JP (1) JPS5595876A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6597205B2 (en) 2001-12-21 2003-07-22 Honeywell International Inc. High accuracy method for determining the frequency of a pulse input signal over a wide frequency range
CN110470903A (en) * 2019-07-31 2019-11-19 山东建筑大学 A kind of electric voltage frequency hard measurement device and method

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6597205B2 (en) 2001-12-21 2003-07-22 Honeywell International Inc. High accuracy method for determining the frequency of a pulse input signal over a wide frequency range
CN110470903A (en) * 2019-07-31 2019-11-19 山东建筑大学 A kind of electric voltage frequency hard measurement device and method
CN110470903B (en) * 2019-07-31 2021-08-17 山东建筑大学 A voltage and frequency soft measurement device and method

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