BR7600507A - Dispositivo para medir pequenas diferencas de frequencia - Google Patents
Dispositivo para medir pequenas diferencas de frequenciaInfo
- Publication number
- BR7600507A BR7600507A BR7600507A BR7600507A BR7600507A BR 7600507 A BR7600507 A BR 7600507A BR 7600507 A BR7600507 A BR 7600507A BR 7600507 A BR7600507 A BR 7600507A BR 7600507 A BR7600507 A BR 7600507A
- Authority
- BR
- Brazil
- Prior art keywords
- small frequency
- frequency differences
- measuring small
- measuring
- differences
- Prior art date
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)
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 |
---|---|
BR7600507A true BR7600507A (pt) | 1976-08-31 |
Family
ID=20323528
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
BR7600507A BR7600507A (pt) | 1975-01-29 | 1976-01-28 | Dispositivo para medir pequenas diferencas de frequencia |
Country Status (7)
Country | Link |
---|---|
US (1) | US4001680A (pt) |
BR (1) | BR7600507A (pt) |
DE (1) | DE2602540A1 (pt) |
FI (1) | FI58405C (pt) |
GB (1) | GB1482398A (pt) |
IT (1) | IT1055011B (pt) |
SE (1) | SE382120B (pt) |
Families Citing this family (7)
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 |
US6595071B1 (en) | 2000-01-06 | 2003-07-22 | Transoma Medical, Inc. | Estimation of error angle in ultrasound flow measurement |
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 |
Family Cites Families (3)
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 |
-
1975
- 1975-01-29 SE SE7500935A patent/SE382120B/xx not_active IP Right Cessation
-
1976
- 1976-01-07 US US05/647,173 patent/US4001680A/en not_active Expired - Lifetime
- 1976-01-08 FI FI760037A patent/FI58405C/sv not_active IP Right Cessation
- 1976-01-23 DE DE19762602540 patent/DE2602540A1/de not_active Ceased
- 1976-01-26 GB GB2954/76A patent/GB1482398A/en not_active Expired
- 1976-01-27 IT IT19657/76A patent/IT1055011B/it active
- 1976-01-28 BR BR7600507A patent/BR7600507A/pt unknown
Also Published As
Publication number | Publication date |
---|---|
DE2602540A1 (de) | 1976-08-05 |
SE382120B (sv) | 1976-01-12 |
US4001680A (en) | 1977-01-04 |
IT1055011B (it) | 1981-12-21 |
FI58405B (fi) | 1980-09-30 |
FI760037A (pt) | 1976-07-30 |
FI58405C (fi) | 1981-01-12 |
GB1482398A (en) | 1977-08-10 |
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