DE3066478D1 - Method and apparatus for accurately determining the rms value of an unknown signal - Google Patents

Method and apparatus for accurately determining the rms value of an unknown signal

Info

Publication number
DE3066478D1
DE3066478D1 DE8080301613T DE3066478T DE3066478D1 DE 3066478 D1 DE3066478 D1 DE 3066478D1 DE 8080301613 T DE8080301613 T DE 8080301613T DE 3066478 T DE3066478 T DE 3066478T DE 3066478 D1 DE3066478 D1 DE 3066478D1
Authority
DE
Germany
Prior art keywords
rms value
accurately determining
unknown signal
unknown
signal
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.)
Expired
Application number
DE8080301613T
Other languages
English (en)
Inventor
Benjamin T Brodie
Henriecus Nmi Koeman
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.)
Fluke Corp
Original Assignee
John Fluke Manufacturing Co Inc
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 John Fluke Manufacturing Co Inc filed Critical John Fluke Manufacturing Co Inc
Application granted granted Critical
Publication of DE3066478D1 publication Critical patent/DE3066478D1/de
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R19/00—Arrangements for measuring currents or voltages or for indicating presence or sign thereof
    • G01R19/02—Measuring effective values, i.e. root-mean-square values
    • G01R19/03—Measuring effective values, i.e. root-mean-square values using thermoconverters

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Analogue/Digital Conversion (AREA)
  • Measurement Of Current Or Voltage (AREA)
  • Investigating Or Analyzing Materials Using Thermal Means (AREA)
DE8080301613T 1979-08-02 1980-05-16 Method and apparatus for accurately determining the rms value of an unknown signal Expired DE3066478D1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US06/062,923 US4274143A (en) 1979-08-02 1979-08-02 Recirculating RMS AC conversion method and apparatus

Publications (1)

Publication Number Publication Date
DE3066478D1 true DE3066478D1 (en) 1984-03-15

Family

ID=22045740

Family Applications (1)

Application Number Title Priority Date Filing Date
DE8080301613T Expired DE3066478D1 (en) 1979-08-02 1980-05-16 Method and apparatus for accurately determining the rms value of an unknown signal

Country Status (5)

Country Link
US (1) US4274143A (de)
EP (1) EP0023752B1 (de)
JP (2) JPS5624582A (de)
CA (1) CA1144239A (de)
DE (1) DE3066478D1 (de)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4360880A (en) * 1979-08-02 1982-11-23 John Fluke Mfg. Co., Inc. Recirculating RMS AC conversion method and apparatus with fast mode
US4274143A (en) * 1979-08-02 1981-06-16 John Fluke Mfg. Co., Inc. Recirculating RMS AC conversion method and apparatus
US4389708A (en) * 1980-08-25 1983-06-21 John Fluke Mfg. Co., Inc. Method and apparatus for enhancing the output of an RMS converter
US5117180A (en) * 1991-06-06 1992-05-26 Hewlett-Packard Company Method and apparatus for measuring RMS values
US5256979A (en) * 1992-02-21 1993-10-26 Abb Power T&D Company Inc. Method and apparatus for measuring an unknown voltage, and power meter employing the same
US7071759B2 (en) * 2003-05-07 2006-07-04 Ballard Power Systems Corporation Method for determining RMS values for grid-linked converters

Family Cites Families (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3303423A (en) * 1963-07-12 1967-02-07 North Hills Electronics Inc Thermocouple type r. m. s. measuring system having storage means to hold measured signal for comparison with reference
GB1050145A (de) * 1964-04-21
US3434053A (en) * 1964-07-21 1969-03-18 Atomic Energy Commission Circuits for an electrical rms measuring instrument
US3384805A (en) * 1965-12-23 1968-05-21 Honeywell Inc Rms measuring circuit
US3423578A (en) * 1966-08-29 1969-01-21 Chrysler Corp True root-mean-square computing circuit
US3518525A (en) * 1968-07-19 1970-06-30 Singer Co System providing a d.c. voltage equal to the r.m.s. value of an unknown a.c. voltage
US3624525A (en) * 1969-11-20 1971-11-30 Hewlett Packard Co True rms converter
US3723845A (en) * 1971-07-16 1973-03-27 Ballantine Labor Inc True rms to dc converters
DE2137281B2 (de) * 1971-07-26 1972-05-25 Hewlett-Packard GmbH, 7030 Böblingen Effektivwertmesser
GB1425917A (en) * 1972-08-19 1976-02-25 Solartron Electronic Group Rms converter
GB1425966A (en) * 1973-06-29 1976-02-25 Solartron Electronic Group True rms converter
JPS51111366A (en) * 1975-03-26 1976-10-01 Mitsubishi Electric Corp Effective value transformation apparatus
DE2618061A1 (de) * 1976-04-24 1977-11-10 Kernforschung Gmbh Ges Fuer Verfahren und schaltungsanordnung zum messen des effektivwertes
US4257061A (en) * 1977-10-17 1981-03-17 John Fluke Mfg. Co., Inc. Thermally isolated monolithic semiconductor die
US4145661A (en) * 1977-12-28 1979-03-20 Canadian Patents And Development Limited Precision measuring amplifier
DE2826078C3 (de) * 1978-06-14 1980-12-04 Siemens Ag, 1000 Berlin Und 8000 Muenchen Schaltungsanordnung zur Messung des Effektivwertes einer elektrischen Wechselspannung
US4274143A (en) * 1979-08-02 1981-06-16 John Fluke Mfg. Co., Inc. Recirculating RMS AC conversion method and apparatus

Also Published As

Publication number Publication date
EP0023752A1 (de) 1981-02-11
JPS5624582A (en) 1981-03-09
EP0023752B1 (de) 1984-02-08
JPH0285917A (ja) 1990-03-27
CA1144239A (en) 1983-04-05
JPH0252224B2 (de) 1990-11-09
US4274143A (en) 1981-06-16

Similar Documents

Publication Publication Date Title
GB1549054A (en) Method of and apparatus for testing liquids
JPS55155227A (en) Apparatus for and method of determining refractory characteristic of test lens
JPS56150331A (en) Method of and apparatus for determining nature of unknown substance
JPS5262491A (en) Method of and apparatus for determining mode characteristic of structure
JPS52133296A (en) Method of and apparatus for determining relative positions
JPS5329180A (en) Method of and apparatus for measuring optical characteristics
GB1557512A (en) Method and an apparatus for detecting the presence of yarnirregularities
JPS57113157A (en) Method and apparatus for inspecting function of indicator
DE3069502D1 (en) Method and apparatus for determining the mass of an impacting object
JPS54135574A (en) Probe for measuring characteristics of plasma* and method and device employing said probe
GB2052218B (en) Method and apparatus for frequency multiplying an electrical signal
JPS5317388A (en) Method of and apparatus for measuring quality
JPS55155247A (en) Method of and apparatus for detecting flaw on test parts
DE3070720D1 (en) Apparatus and method for measuring the emissivity of an object
JPS5530794A (en) Method and apparatus for detecting ratio of signal variation
JPS5649943A (en) Method of and apparatus for measuring fluorescense
JPS5655841A (en) Method of and apparatus for measuring surface reflector characteristics
JPS5349459A (en) Method of measuring distance and apparatus for measuring thickness
DE3065656D1 (en) Method and apparatus for non-destructive testing of tires
GB2011750B (en) Method of and apparatus for measuring distances
JPS53108480A (en) Method of and apparatus for signal measurement and indication control
DE3070876D1 (en) Method and apparatus for measuring antibody levels
JPS55158507A (en) Method of and apparatus for automatically measuring works
JPS5349466A (en) Method of and apparatus for inspecting and measuring container
JPS5341252A (en) Method of and apparatus for measuring characteristics of substance

Legal Events

Date Code Title Description
8339 Ceased/non-payment of the annual fee