IT1107215B - Apparecchio misuratore di frequenza - Google Patents
Apparecchio misuratore di frequenzaInfo
- Publication number
- IT1107215B IT1107215B IT51293/78A IT5129378A IT1107215B IT 1107215 B IT1107215 B IT 1107215B IT 51293/78 A IT51293/78 A IT 51293/78A IT 5129378 A IT5129378 A IT 5129378A IT 1107215 B IT1107215 B IT 1107215B
- Authority
- IT
- Italy
- Prior art keywords
- frequency meter
- meter apparatus
- frequency
- meter
- 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
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Measuring Phase Differences (AREA)
- Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
- Measuring Frequencies, Analyzing Spectra (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US05/839,133 US4144491A (en) | 1977-10-03 | 1977-10-03 | Frequency measuring apparatus |
Publications (2)
Publication Number | Publication Date |
---|---|
IT7851293A0 IT7851293A0 (it) | 1978-09-28 |
IT1107215B true IT1107215B (it) | 1985-11-25 |
Family
ID=25278933
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
IT51293/78A IT1107215B (it) | 1977-10-03 | 1978-09-28 | Apparecchio misuratore di frequenza |
Country Status (8)
Country | Link |
---|---|
US (1) | US4144491A (it) |
JP (1) | JPS5459178A (it) |
AU (1) | AU517758B2 (it) |
CA (1) | CA1116238A (it) |
DE (1) | DE2843070A1 (it) |
FR (1) | FR2404858A1 (it) |
GB (1) | GB2005936B (it) |
IT (1) | IT1107215B (it) |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
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 |
US4477773A (en) * | 1982-08-02 | 1984-10-16 | Raytheon Company | Frequency measuring apparatus |
JPS60110052U (ja) * | 1983-12-28 | 1985-07-26 | 本田技研工業株式会社 | 自動車用キヤリヤ |
GB2320986B (en) * | 1989-09-05 | 1998-10-21 | Matra Bae Dynamics | Frequency Discriminator For A Radar Transmitter |
US5608331A (en) * | 1995-06-06 | 1997-03-04 | Hughes Electronics | Noise measurement test system |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3189820A (en) * | 1961-04-26 | 1965-06-15 | Cutler Hammer Inc | Plural channel signal receiver including signal delay means |
US3391344A (en) * | 1967-04-07 | 1968-07-02 | Army Usa | Digital signal synchronous detector with noise blanking means |
GB1185660A (en) * | 1967-11-24 | 1970-03-25 | Bradley Ltd G & E | Determining the Fractional Change in Period of an Oscillation |
US3568067A (en) * | 1969-06-13 | 1971-03-02 | Collins Radio Co | Frequency discriminator with output indicative of difference between input and local reference signals |
US3701012A (en) * | 1970-07-06 | 1972-10-24 | E S E Ltd | Circuit and method for developing signal indicative of unknown frequency |
US3783389A (en) * | 1972-05-31 | 1974-01-01 | Us Army | Median frequency generator |
US3895293A (en) * | 1973-07-14 | 1975-07-15 | Elma Hans Schmidbauer | Method and system for furnishing an indication of the deviation of the actual frequency of a low frequency signal from a nominal frequency |
-
1977
- 1977-10-03 US US05/839,133 patent/US4144491A/en not_active Expired - Lifetime
-
1978
- 1978-09-05 CA CA310,582A patent/CA1116238A/en not_active Expired
- 1978-09-11 AU AU39729/78A patent/AU517758B2/en not_active Expired
- 1978-09-12 GB GB7836562A patent/GB2005936B/en not_active Expired
- 1978-09-26 JP JP11852278A patent/JPS5459178A/ja active Granted
- 1978-09-28 IT IT51293/78A patent/IT1107215B/it active
- 1978-10-03 FR FR7828259A patent/FR2404858A1/fr active Granted
- 1978-10-03 DE DE19782843070 patent/DE2843070A1/de not_active Withdrawn
Also Published As
Publication number | Publication date |
---|---|
FR2404858B1 (it) | 1983-04-15 |
CA1116238A (en) | 1982-01-12 |
AU517758B2 (en) | 1981-08-27 |
JPS5733549B2 (it) | 1982-07-17 |
DE2843070A1 (de) | 1979-04-12 |
GB2005936A (en) | 1979-04-25 |
US4144491A (en) | 1979-03-13 |
IT7851293A0 (it) | 1978-09-28 |
JPS5459178A (en) | 1979-05-12 |
GB2005936B (en) | 1982-02-10 |
AU3972978A (en) | 1980-03-20 |
FR2404858A1 (fr) | 1979-04-27 |
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