JPS56156011A - Tracking filter - Google Patents

Tracking filter

Info

Publication number
JPS56156011A
JPS56156011A JP5976880A JP5976880A JPS56156011A JP S56156011 A JPS56156011 A JP S56156011A JP 5976880 A JP5976880 A JP 5976880A JP 5976880 A JP5976880 A JP 5976880A JP S56156011 A JPS56156011 A JP S56156011A
Authority
JP
Japan
Prior art keywords
measurement
frequency
low
cut
pass filter
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
JP5976880A
Other languages
Japanese (ja)
Other versions
JPS6053484B2 (en
Inventor
Katsuhiko Yamanaka
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.)
Yokogawa Electric Corp
Original Assignee
Yokogawa Hokushin Electric Corp
Yokogawa Electric Works 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 Yokogawa Hokushin Electric Corp, Yokogawa Electric Works Ltd filed Critical Yokogawa Hokushin Electric Corp
Priority to JP5976880A priority Critical patent/JPS6053484B2/en
Publication of JPS56156011A publication Critical patent/JPS56156011A/en
Publication of JPS6053484B2 publication Critical patent/JPS6053484B2/en
Expired 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

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Measurement Of Resistance Or Impedance (AREA)
  • Filters And Equalizers (AREA)

Abstract

PURPOSE:To ensure a highly precise measurement, by switching the cut-off frequency of a low-pass filter to the measurement frequency in case the measurement input signal is multiplied by the measurement output signal and then supplied to an arithmetic circuit via the low-pass filter. CONSTITUTION:The measurement input signal SM is multiplied by the measurement output signal S0 by the multipliers MUL1 and MUL2 to be applied to an arithmetic circuit LS via the low-pass filters FL1 and FL2. Then the cut-off frequency of the low-pass filter is set at a small value when the measurement frequency is low. And the cut-off frequency is increases as the measurement frequency increases.
JP5976880A 1980-05-06 1980-05-06 tracking filter Expired JPS6053484B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP5976880A JPS6053484B2 (en) 1980-05-06 1980-05-06 tracking filter

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5976880A JPS6053484B2 (en) 1980-05-06 1980-05-06 tracking filter

Publications (2)

Publication Number Publication Date
JPS56156011A true JPS56156011A (en) 1981-12-02
JPS6053484B2 JPS6053484B2 (en) 1985-11-26

Family

ID=13122786

Family Applications (1)

Application Number Title Priority Date Filing Date
JP5976880A Expired JPS6053484B2 (en) 1980-05-06 1980-05-06 tracking filter

Country Status (1)

Country Link
JP (1) JPS6053484B2 (en)

Also Published As

Publication number Publication date
JPS6053484B2 (en) 1985-11-26

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