JPS5461580A - Watt meter - Google Patents

Watt meter

Info

Publication number
JPS5461580A
JPS5461580A JP12776777A JP12776777A JPS5461580A JP S5461580 A JPS5461580 A JP S5461580A JP 12776777 A JP12776777 A JP 12776777A JP 12776777 A JP12776777 A JP 12776777A JP S5461580 A JPS5461580 A JP S5461580A
Authority
JP
Japan
Prior art keywords
fed
power
multiplied
detected
output
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
JP12776777A
Other languages
Japanese (ja)
Inventor
Shigeru Asakawa
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.)
Toshiba Corp
Original Assignee
Toshiba Corp
Tokyo Shibaura Electric Co 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 Toshiba Corp, Tokyo Shibaura Electric Co Ltd filed Critical Toshiba Corp
Priority to JP12776777A priority Critical patent/JPS5461580A/en
Publication of JPS5461580A publication Critical patent/JPS5461580A/en
Pending legal-status Critical Current

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  • Measurement Of Current Or Voltage (AREA)

Abstract

PURPOSE: To remarkably effectively meter the effective and apparent powers from the multiplied output of a single multiplier composed of a Hall element.
CONSTITUTION: The signals of voltage and current components, which are detected by voltage and current detectors 11 and 13, are fed to a multiplier composed of a Hall element so that the multiplied output is generated through a series connection of a low pass filter 15 and a coefficient device 16. The level of the resultant signals corresponds to the effective power which is to be fed to a load 3 through a power source line 1. The multiplied output is fed through a band pass filter 17 to an amplitude detector 18 so that the amplitude component of the multiplied output is detected. The detected output is multiplied corresponding to the apparent power of the power to be fed to the load 3
COPYRIGHT: (C)1979,JPO&Japio
JP12776777A 1977-10-25 1977-10-25 Watt meter Pending JPS5461580A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP12776777A JPS5461580A (en) 1977-10-25 1977-10-25 Watt meter

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP12776777A JPS5461580A (en) 1977-10-25 1977-10-25 Watt meter

Publications (1)

Publication Number Publication Date
JPS5461580A true JPS5461580A (en) 1979-05-17

Family

ID=14968183

Family Applications (1)

Application Number Title Priority Date Filing Date
JP12776777A Pending JPS5461580A (en) 1977-10-25 1977-10-25 Watt meter

Country Status (1)

Country Link
JP (1) JPS5461580A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62287167A (en) * 1986-06-05 1987-12-14 Towa Denki Kk Ac wattmeter

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62287167A (en) * 1986-06-05 1987-12-14 Towa Denki Kk Ac wattmeter

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