ES500172A0 - Perfeccionamientos en aparatos de comprobacion de frecuen- cias de senales electricas - Google Patents

Perfeccionamientos en aparatos de comprobacion de frecuen- cias de senales electricas

Info

Publication number
ES500172A0
ES500172A0 ES500172A ES500172A ES500172A0 ES 500172 A0 ES500172 A0 ES 500172A0 ES 500172 A ES500172 A ES 500172A ES 500172 A ES500172 A ES 500172A ES 500172 A0 ES500172 A0 ES 500172A0
Authority
ES
Spain
Prior art keywords
electrical signal
signal frequency
checking devices
frequency checking
devices
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
ES500172A
Other languages
English (en)
Other versions
ES8202956A1 (es
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.)
Siemens Mobility Ltd
Original Assignee
Westinghouse Brake and Signal 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 Westinghouse Brake and Signal Co Ltd filed Critical Westinghouse Brake and Signal Co Ltd
Publication of ES500172A0 publication Critical patent/ES500172A0/es
Publication of ES8202956A1 publication Critical patent/ES8202956A1/es
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R23/00—Arrangements for measuring frequencies; Arrangements for analysing frequency spectra
    • G01R23/02—Arrangements for measuring frequency, e.g. pulse repetition rate; Arrangements for measuring period of current or voltage
    • G01R23/15—Indicating that frequency of pulses is either above or below a predetermined value or within or outside a predetermined range of values, by making use of non-linear or digital elements (indicating that pulse width is above or below a certain limit)

Landscapes

  • Physics & Mathematics (AREA)
  • Nonlinear Science (AREA)
  • General Physics & Mathematics (AREA)
  • Electric Propulsion And Braking For Vehicles (AREA)
ES500172A 1980-03-07 1981-03-06 Perfeccionamientos en aparatos de comprobacion de frecuen- cias de senales electricas Expired ES8202956A1 (es)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB8007874 1980-03-07

Publications (2)

Publication Number Publication Date
ES500172A0 true ES500172A0 (es) 1982-02-16
ES8202956A1 ES8202956A1 (es) 1982-02-16

Family

ID=10511949

Family Applications (1)

Application Number Title Priority Date Filing Date
ES500172A Expired ES8202956A1 (es) 1980-03-07 1981-03-06 Perfeccionamientos en aparatos de comprobacion de frecuen- cias de senales electricas

Country Status (4)

Country Link
EP (1) EP0035846A3 (es)
ES (1) ES8202956A1 (es)
GB (1) GB2071450B (es)
MX (1) MX149527A (es)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2215067B (en) * 1988-02-19 1992-09-09 Richard Carlile Marshall Electromagnetic compatibility testing

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2318875C2 (de) * 1973-04-11 1982-08-19 Siemens AG, 1000 Berlin und 8000 München Schaltungsanordnung zur Gewinnung von Auslösesignalen bei von einer Sollfrequenz abweichenden Frequenzen
US3993984A (en) * 1975-04-08 1976-11-23 Power Management Corporation Electronic underfrequency relay
DE2854315C2 (de) * 1978-12-15 1987-01-02 German Ing.(Grad.) 8060 Dachau Grimm Einrichtung zum Bestimmen von die Netzfrequenz beeinflussenden Störungen in elektrischen Energieversorgungsnetzen und Verwendung einer derartigen Einrichtung in einer adaptiven Frequenzregeleinrichtung für elektrische Energieversorgungsnetze

Also Published As

Publication number Publication date
EP0035846A3 (en) 1982-01-27
EP0035846A2 (en) 1981-09-16
MX149527A (es) 1983-11-18
GB2071450B (en) 1984-03-14
GB2071450A (en) 1981-09-16
ES8202956A1 (es) 1982-02-16

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