GB1482398A - Circuit arrangement for producing a representation of a difference in frequency between first and second alternating electrical signals - Google Patents

Circuit arrangement for producing a representation of a difference in frequency between first and second alternating electrical signals

Info

Publication number
GB1482398A
GB1482398A GB2954/76A GB295476A GB1482398A GB 1482398 A GB1482398 A GB 1482398A GB 2954/76 A GB2954/76 A GB 2954/76A GB 295476 A GB295476 A GB 295476A GB 1482398 A GB1482398 A GB 1482398A
Authority
GB
United Kingdom
Prior art keywords
frequency
ramp
ramp voltage
circuit
switch
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
GB2954/76A
Other languages
English (en)
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.)
Telefonaktiebolaget LM Ericsson AB
Original Assignee
Telefonaktiebolaget LM Ericsson AB
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 Telefonaktiebolaget LM Ericsson AB filed Critical Telefonaktiebolaget LM Ericsson AB
Publication of GB1482398A publication Critical patent/GB1482398A/en
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
    • G01R23/12—Arrangements for measuring frequency, e.g. pulse repetition rate; Arrangements for measuring period of current or voltage by converting frequency into phase shift

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Measurement Of Current Or Voltage (AREA)
  • Measuring Phase Differences (AREA)
  • Manipulation Of Pulses (AREA)
  • Control Of Motors That Do Not Use Commutators (AREA)
GB2954/76A 1975-01-29 1976-01-26 Circuit arrangement for producing a representation of a difference in frequency between first and second alternating electrical signals Expired GB1482398A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE7500935A SE382120B (sv) 1975-01-29 1975-01-29 Anordning for metning av sma frekvensdifferenser

Publications (1)

Publication Number Publication Date
GB1482398A true GB1482398A (en) 1977-08-10

Family

ID=20323528

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2954/76A Expired GB1482398A (en) 1975-01-29 1976-01-26 Circuit arrangement for producing a representation of a difference in frequency between first and second alternating electrical signals

Country Status (7)

Country Link
US (1) US4001680A (enExample)
BR (1) BR7600507A (enExample)
DE (1) DE2602540A1 (enExample)
FI (1) FI58405C (enExample)
GB (1) GB1482398A (enExample)
IT (1) IT1055011B (enExample)
SE (1) SE382120B (enExample)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4106096A (en) * 1976-08-30 1978-08-08 Bell Telephone Laboratories, Incorporated Derivative measurement by frequency mixing
JPS6037711B2 (ja) * 1978-09-01 1985-08-28 株式会社東芝 位相検出器
US4585989A (en) * 1984-05-18 1986-04-29 Tektronix, Inc. 50% point of amplitude and phase detector
GB2193406B (en) * 1986-08-02 1990-04-25 Marconi Instruments Ltd Phase detector
US6435037B1 (en) 2000-01-06 2002-08-20 Data Sciences International, Inc. Multiplexed phase detector
US6539316B1 (en) 2000-01-06 2003-03-25 Data Sciences International, Inc. Phase detector
US6595071B1 (en) 2000-01-06 2003-07-22 Transoma Medical, Inc. Estimation of error angle in ultrasound flow measurement

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3233180A (en) * 1961-12-13 1966-02-01 Bowser Inc Frequency comparator
DE1516994A1 (de) * 1965-04-06 1969-09-25 Western Electric Co Frequenzvergleichsanordnung
FR1525939A (fr) * 1966-12-30 1968-05-24 C I T Cie Ind Des Telecommuni Circuit servant à déceler le synchronisme entre deux fréquences

Also Published As

Publication number Publication date
US4001680A (en) 1977-01-04
IT1055011B (it) 1981-12-21
FI760037A7 (enExample) 1976-07-30
SE382120B (sv) 1976-01-12
BR7600507A (pt) 1976-08-31
FI58405C (fi) 1981-01-12
DE2602540A1 (de) 1976-08-05
FI58405B (fi) 1980-09-30

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee