FI58405C - Anordning foer maetning av smao frekvensdifferenser - Google Patents
Anordning foer maetning av smao frekvensdifferenser Download PDFInfo
- Publication number
- FI58405C FI58405C FI760037A FI760037A FI58405C FI 58405 C FI58405 C FI 58405C FI 760037 A FI760037 A FI 760037A FI 760037 A FI760037 A FI 760037A FI 58405 C FI58405 C FI 58405C
- Authority
- FI
- Finland
- Prior art keywords
- circuit
- voltage
- contact means
- pulse
- phase
- Prior art date
Links
- 238000007689 inspection Methods 0.000 title 1
- 238000009795 derivation Methods 0.000 claims description 15
- 230000005669 field effect Effects 0.000 claims description 4
- 239000002360 explosive Substances 0.000 claims 3
- 238000006243 chemical reaction Methods 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 3
- 230000001960 triggered effect Effects 0.000 description 3
- 230000000295 complement effect Effects 0.000 description 2
- 238000001914 filtration Methods 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000001174 ascending effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 239000003990 capacitor Substances 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
- 230000000644 propagated effect Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 230000001052 transient effect Effects 0.000 description 1
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 (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SE7500935A SE382120B (sv) | 1975-01-29 | 1975-01-29 | Anordning for metning av sma frekvensdifferenser |
| SE7500935 | 1975-01-29 |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| FI760037A7 FI760037A7 (Direct) | 1976-07-30 |
| FI58405B FI58405B (fi) | 1980-09-30 |
| FI58405C true FI58405C (fi) | 1981-01-12 |
Family
ID=20323528
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FI760037A FI58405C (fi) | 1975-01-29 | 1976-01-08 | Anordning foer maetning av smao frekvensdifferenser |
Country Status (7)
| Country | Link |
|---|---|
| US (1) | US4001680A (Direct) |
| BR (1) | BR7600507A (Direct) |
| DE (1) | DE2602540A1 (Direct) |
| FI (1) | FI58405C (Direct) |
| GB (1) | GB1482398A (Direct) |
| IT (1) | IT1055011B (Direct) |
| SE (1) | SE382120B (Direct) |
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 |
| 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)
| 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 |
|---|---|
| US4001680A (en) | 1977-01-04 |
| IT1055011B (it) | 1981-12-21 |
| FI760037A7 (Direct) | 1976-07-30 |
| SE382120B (sv) | 1976-01-12 |
| BR7600507A (pt) | 1976-08-31 |
| GB1482398A (en) | 1977-08-10 |
| DE2602540A1 (de) | 1976-08-05 |
| FI58405B (fi) | 1980-09-30 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MM | Patent lapsed |
Owner name: OY L M ERICSSON AB |