JPS5447688A - Digital circuit - Google Patents

Digital circuit

Info

Publication number
JPS5447688A
JPS5447688A JP11400577A JP11400577A JPS5447688A JP S5447688 A JPS5447688 A JP S5447688A JP 11400577 A JP11400577 A JP 11400577A JP 11400577 A JP11400577 A JP 11400577A JP S5447688 A JPS5447688 A JP S5447688A
Authority
JP
Japan
Prior art keywords
data
values
square
sampling
trigonometric functions
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
JP11400577A
Other languages
Japanese (ja)
Inventor
Yasuhiro Kamikubo
Tadahiro Aida
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 JP11400577A priority Critical patent/JPS5447688A/en
Publication of JPS5447688A publication Critical patent/JPS5447688A/en
Pending legal-status Critical Current

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  • Measurement Of Current Or Voltage (AREA)

Abstract

PURPOSE: To obtain the effective values of functions accurately and readily by sampling the analog input signals indicated by the trigonometric functions of time and continously adding 3 data of the square of the value of every 60° of these data.
CONSTITUTION: The respective sampling instantaneous data having been sampled the sine waves of the analog input signals indicated by the trigonometric functions of the time (t) at 60° are applied to a square arithmetic circuit 17, the outputs whereof are then stored in a memory circuit 18. The squares of the data 60° before and the data of 120° before are stored in memory circuit 19, 20. The sums of the data of these memory circuits 18 thru 20 are operated by an adder 21, whereby the values 1.5 times the square of the vector absolute values of the sampled trigonometric functions are operated. Hence, the values may be made accurate and the capacity of the apparatus may be made small because the values may be obtained irrespective of the sampling initial phase angles
COPYRIGHT: (C)1979,JPO&Japio
JP11400577A 1977-09-22 1977-09-22 Digital circuit Pending JPS5447688A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP11400577A JPS5447688A (en) 1977-09-22 1977-09-22 Digital circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP11400577A JPS5447688A (en) 1977-09-22 1977-09-22 Digital circuit

Publications (1)

Publication Number Publication Date
JPS5447688A true JPS5447688A (en) 1979-04-14

Family

ID=14626663

Family Applications (1)

Application Number Title Priority Date Filing Date
JP11400577A Pending JPS5447688A (en) 1977-09-22 1977-09-22 Digital circuit

Country Status (1)

Country Link
JP (1) JPS5447688A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57156565A (en) * 1981-03-20 1982-09-27 Nec Corp Digital level detecting circuit
JPS5910591A (en) * 1982-07-09 1984-01-20 Meiji Seika Kaisha Ltd 1-oxadethiacephalosporin compound and antibacterial agent containing the same
JPS6182174A (en) * 1984-03-26 1986-04-25 Otani Denki Kk Peak detecting device
JPS61169766A (en) * 1985-01-23 1986-07-31 Fuji Electric Co Ltd Digital measuring system

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57156565A (en) * 1981-03-20 1982-09-27 Nec Corp Digital level detecting circuit
JPS5910591A (en) * 1982-07-09 1984-01-20 Meiji Seika Kaisha Ltd 1-oxadethiacephalosporin compound and antibacterial agent containing the same
JPH0251432B2 (en) * 1982-07-09 1990-11-07 Meiji Seika Co
JPS6182174A (en) * 1984-03-26 1986-04-25 Otani Denki Kk Peak detecting device
JPS61169766A (en) * 1985-01-23 1986-07-31 Fuji Electric Co Ltd Digital measuring system

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