JPS55143452A - Amplitude value deriving unit - Google Patents

Amplitude value deriving unit

Info

Publication number
JPS55143452A
JPS55143452A JP12537178A JP12537178A JPS55143452A JP S55143452 A JPS55143452 A JP S55143452A JP 12537178 A JP12537178 A JP 12537178A JP 12537178 A JP12537178 A JP 12537178A JP S55143452 A JPS55143452 A JP S55143452A
Authority
JP
Japan
Prior art keywords
memory
signal
sampled
differences
circuit
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
JP12537178A
Other languages
Japanese (ja)
Inventor
Koji Maeda
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 JP12537178A priority Critical patent/JPS55143452A/en
Publication of JPS55143452A publication Critical patent/JPS55143452A/en
Pending legal-status Critical Current

Links

Landscapes

  • Measurement Of Current Or Voltage (AREA)
  • Emergency Protection Circuit Devices (AREA)

Abstract

PURPOSE: To evaluate an AC signal by removing a noise, distortion, etc., included in the AC signal by sampling the AC signal at constant interval as many as four, by calculating differences between two preceding components and two following ones, and by calculating the square-law sum as to those differences.
CONSTITUTION: The current value of an AC signal sampled at a constant period via terminal 1 is input to memory 2 and substracting circuit 3. Memory 2, consisting of a shift register, memorizes two sampled current values and outputs them to memory 4. The contents of memory 4 are transferred to memory 5. Substracting circuits 3 and 6 output differences between two preceding sampled values and two following smapled ones to multiplying circuits 7 and 8. Multiplying circuits 7 and 8 square the inputs and then input the results to adding circuit 9. The output of adding circuit 10 is compared by comparing circuit 10 to a prescribed value.
COPYRIGHT: (C)1980,JPO&Japio
JP12537178A 1978-10-11 1978-10-11 Amplitude value deriving unit Pending JPS55143452A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP12537178A JPS55143452A (en) 1978-10-11 1978-10-11 Amplitude value deriving unit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP12537178A JPS55143452A (en) 1978-10-11 1978-10-11 Amplitude value deriving unit

Publications (1)

Publication Number Publication Date
JPS55143452A true JPS55143452A (en) 1980-11-08

Family

ID=14908469

Family Applications (1)

Application Number Title Priority Date Filing Date
JP12537178A Pending JPS55143452A (en) 1978-10-11 1978-10-11 Amplitude value deriving unit

Country Status (1)

Country Link
JP (1) JPS55143452A (en)

Similar Documents

Publication Publication Date Title
JPS5551361A (en) Range switching device for electric measuring instrument
JPS5660358A (en) Spectrum analyzer
JPS54159831A (en) Adder and subtractor for numbers different in data length using counter circuit
JPS57133362A (en) Frequency detector
JPS5556252A (en) Digital differential analyzer
JPS55143452A (en) Amplitude value deriving unit
JPS5694435A (en) Multiplying circuit
JPS54134678A (en) Effective value measuring apparatus
JPS5537924A (en) Integrated circuit
JPS5571315A (en) Limit cycle reduction system of digital filter
JPS5448471A (en) Coding system
JPS55116220A (en) Processing of output of electromagnetic type flow meter
JPS5798040A (en) Comparator for serial magnitude
JPS55163908A (en) Digital tone control circuit
SU1511698A1 (en) Converter of a.c. voltage
JPS57556A (en) Digital amplitude detecting circuit
JPS59101917A (en) Amplitude limiting system
JPS54147442A (en) Relay inspection system for second harmonic detection
JPS5585256A (en) Method and apparatus for microscopic vibration of frequency
FR2339292A1 (en) Radar or sonar signal processing device - uses non-linear transformation circuit to quantify signal
JPS549975A (en) Nonlinear circuit
JPS5455481A (en) Frequency analyzer
JPS5533204A (en) Digital control system
JPS5338380A (en) Peak detecting circuit
JPS5651180A (en) Video signal binary device