CH491391A - Wattmètre - Google Patents

Wattmètre

Info

Publication number
CH491391A
CH491391A CH19568A CH19568A CH491391A CH 491391 A CH491391 A CH 491391A CH 19568 A CH19568 A CH 19568A CH 19568 A CH19568 A CH 19568A CH 491391 A CH491391 A CH 491391A
Authority
CH
Switzerland
Prior art keywords
wattmeter
Prior art date
Application number
CH19568A
Other languages
English (en)
Inventor
Woodhead Peter
Original Assignee
English 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 English Electric Co Ltd filed Critical English Electric Co Ltd
Publication of CH491391A publication Critical patent/CH491391A/fr

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R21/00—Arrangements for measuring electric power or power factor
    • G01R21/14—Compensating for temperature change
    • 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)
  • Amplifiers (AREA)
  • Arrangements For Transmission Of Measured Signals (AREA)
  • Transmission And Conversion Of Sensor Element Output (AREA)
  • Measurement Of Current Or Voltage (AREA)
CH19568A 1967-01-10 1968-01-08 Wattmètre CH491391A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB0241/67A GB1224162A (en) 1967-01-10 1967-01-10 Improvements in power meters

Publications (1)

Publication Number Publication Date
CH491391A true CH491391A (fr) 1970-05-31

Family

ID=9718565

Family Applications (1)

Application Number Title Priority Date Filing Date
CH19568A CH491391A (fr) 1967-01-10 1968-01-08 Wattmètre

Country Status (5)

Country Link
US (1) US3500200A (fr)
CH (1) CH491391A (fr)
DE (1) DE1616379A1 (fr)
GB (1) GB1224162A (fr)
SE (1) SE340654B (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0049520A1 (fr) * 1980-10-06 1982-04-14 Square D Company Transducteur électronique de watt/VAR

Families Citing this family (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
USRE29079E (en) * 1970-01-27 1976-12-14 Motor Finance Corporation Multiplier, divider and wattmeter using a switching circuit and a pulse-width and frequency modulator
US3707675A (en) * 1970-09-11 1972-12-26 Bailey Meter Co Measuring system for comparing the relative magnitudes of first and second d.c. signals
US3673495A (en) * 1971-02-24 1972-06-27 Mc Graw Edison Co Apparatus and method for measuring electrical energy consumption
US3818340A (en) * 1971-03-26 1974-06-18 Yokogawa Electric Works Ltd Electronic watt-hour meter with digital output representing time-integrated input
US3760273A (en) * 1971-06-24 1973-09-18 Mc Culloch Corp Electronic watt hour meter
US3746851A (en) * 1971-12-21 1973-07-17 Technical Management Services Multiplier, divider and wattmeter using a switching circuit and a pulse-width and frequency modulator
BE793764A (fr) * 1972-01-06 1973-05-02 Reliance Electric Co Integrerende weeginrichting
DE2206223A1 (de) * 1972-02-10 1973-08-23 Siemens Ag Elektronische multipliziereinrichtung nach dem time-division-verfahren
US3794917A (en) * 1972-03-09 1974-02-26 Esterline Corp Electronic watt transducer
DE2348667B2 (de) * 1973-09-27 1975-08-14 Siemens Ag, 1000 Berlin Und 8000 Muenchen Elektronischer kWh-Zähler
US3942110A (en) * 1974-05-08 1976-03-02 General Electric Company Analog to pulse rate converter
US3947763A (en) * 1974-05-30 1976-03-30 General Electric Company C-MOS electronic kWh meter and method for metering electrical energy
US3976942A (en) * 1974-12-13 1976-08-24 Esterline Corporation Watt/watt hour transducer having current signals and a modulator therefor
US4027241A (en) * 1976-05-19 1977-05-31 Westinghouse Electric Corporation Solid state watt and var transducer
US4242634A (en) * 1978-05-06 1980-12-30 Enertec Electronic multiplying circuits
US4463311A (en) * 1980-05-29 1984-07-31 Tokyo Shibaura Denki Kabushiki Kaisha Electronic electric-energy meter
US4356446A (en) * 1981-03-23 1982-10-26 Transdata, Inc. Time division multiplier transducer with selective phase shift
US4408283A (en) * 1981-06-08 1983-10-04 Transdata, Inc. Time division multiplier transducer with digitally derived phase shift adjustment for reactive power and energy measurement
CH670518A5 (fr) * 1986-05-20 1989-06-15 Landis & Gyr Ag

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1061177A (fr) * 1952-08-01 1954-04-09 Cie Ind Des Telephones Wattmètre électronique
US3358129A (en) * 1964-05-28 1967-12-12 Raytheon Co Electronic trigonometric multiplier

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0049520A1 (fr) * 1980-10-06 1982-04-14 Square D Company Transducteur électronique de watt/VAR

Also Published As

Publication number Publication date
DE1616379A1 (de) 1971-04-08
US3500200A (en) 1970-03-10
GB1224162A (en) 1971-03-03
SE340654B (fr) 1971-11-29

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Legal Events

Date Code Title Description
PL Patent ceased