JPS5713363A - Electronic system electric energy meter - Google Patents

Electronic system electric energy meter

Info

Publication number
JPS5713363A
JPS5713363A JP8801680A JP8801680A JPS5713363A JP S5713363 A JPS5713363 A JP S5713363A JP 8801680 A JP8801680 A JP 8801680A JP 8801680 A JP8801680 A JP 8801680A JP S5713363 A JPS5713363 A JP S5713363A
Authority
JP
Japan
Prior art keywords
circuit
output
pulse width
voltage
trouble
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
JP8801680A
Other languages
Japanese (ja)
Other versions
JPS6247257B2 (en
Inventor
Shunichi Kobayashi
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 JP8801680A priority Critical patent/JPS5713363A/en
Publication of JPS5713363A publication Critical patent/JPS5713363A/en
Publication of JPS6247257B2 publication Critical patent/JPS6247257B2/ja
Granted legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R21/00—Arrangements for measuring electric power or power factor
    • G01R21/127—Arrangements for measuring electric power or power factor by using pulse modulation

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)

Abstract

PURPOSE:To enable the detection of a trouble without applying any load to a voltage converting part, by a method wherein a trouble at a voltage circuit side is detected by means of a pulse width duty cycle signal from a pulse width modulating circuit. CONSTITUTION:A pulse width duty cycle signal from a pulse width modulating circuit 12, to which an output of a voltage converting part is applied, controls an analogue switch of a time division multiplying circuit 15. The output of the multiplying circuit 15, to which an output of a voltage converting part 13 is supplied via a resistance 14, is fed to an indicator 19 via integrating circuits 16a, 16b, a voltage- frequency converting circuit 17, a frequency dividing circuit 18, and is integrated. Meanwhile, the output of the modulating circuit 12 is integrated by integrating circuits R5, C2 via a switch S1 for a given period of time, and is then fed to comparators A3 and A4. In case the output of the integrating circuit is approx.=0, a luminous diode LE emits a light via an exclusive OR circuit, a transistor Tr, and indicates a trouble. This prevents a transformer from being burdened and permits the high- precise measurement of an electric power.
JP8801680A 1980-06-28 1980-06-28 Electronic system electric energy meter Granted JPS5713363A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8801680A JPS5713363A (en) 1980-06-28 1980-06-28 Electronic system electric energy meter

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8801680A JPS5713363A (en) 1980-06-28 1980-06-28 Electronic system electric energy meter

Publications (2)

Publication Number Publication Date
JPS5713363A true JPS5713363A (en) 1982-01-23
JPS6247257B2 JPS6247257B2 (en) 1987-10-07

Family

ID=13931033

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8801680A Granted JPS5713363A (en) 1980-06-28 1980-06-28 Electronic system electric energy meter

Country Status (1)

Country Link
JP (1) JPS5713363A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0275970A (en) * 1988-09-13 1990-03-15 Tokyo Electric Power Co Inc:The Electronic watthour meter
JPH05169435A (en) * 1991-12-18 1993-07-09 Komatsu Denshi Kinzoku Kk Cutting method of ingot

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0275970A (en) * 1988-09-13 1990-03-15 Tokyo Electric Power Co Inc:The Electronic watthour meter
JPH05169435A (en) * 1991-12-18 1993-07-09 Komatsu Denshi Kinzoku Kk Cutting method of ingot

Also Published As

Publication number Publication date
JPS6247257B2 (en) 1987-10-07

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