IT1016623B - Rivelatore di sovravelocita par ticolarmente per mezzi ferroviari - Google Patents
Rivelatore di sovravelocita par ticolarmente per mezzi ferroviariInfo
- Publication number
- IT1016623B IT1016623B IT69286/74A IT6928674A IT1016623B IT 1016623 B IT1016623 B IT 1016623B IT 69286/74 A IT69286/74 A IT 69286/74A IT 6928674 A IT6928674 A IT 6928674A IT 1016623 B IT1016623 B IT 1016623B
- Authority
- IT
- Italy
- Prior art keywords
- speed detector
- railway transport
- over speed
- par ticularly
- ticularly
- Prior art date
Links
Classifications
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
- H03H11/00—Networks using active elements
- H03H11/02—Multiple-port networks
- H03H11/04—Frequency selective two-port networks
- H03H11/12—Frequency selective two-port networks using amplifiers with feedback
- H03H11/1213—Frequency selective two-port networks using amplifiers with feedback using transistor amplifiers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61L—GUIDING RAILWAY TRAFFIC; ENSURING THE SAFETY OF RAILWAY TRAFFIC
- B61L3/00—Devices along the route for controlling devices on the vehicle or train, e.g. to release brake or to operate a warning signal
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
- G01P1/00—Details of instruments
- G01P1/07—Indicating devices, e.g. for remote indication
- G01P1/08—Arrangements of scales, pointers, lamps or acoustic indicators, e.g. in automobile speedometers
- G01P1/10—Arrangements of scales, pointers, lamps or acoustic indicators, e.g. in automobile speedometers for indicating predetermined speeds
- G01P1/103—Arrangements of scales, pointers, lamps or acoustic indicators, e.g. in automobile speedometers for indicating predetermined speeds by comparing the value of the measured signal with one or several reference values
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
- G01P3/00—Measuring linear or angular speed; Measuring differences of linear or angular speeds
- G01P3/42—Devices characterised by the use of electric or magnetic means
- G01P3/44—Devices characterised by the use of electric or magnetic means for measuring angular speed
- G01P3/48—Devices characterised by the use of electric or magnetic means for measuring angular speed by measuring frequency of generated current or voltage
- G01P3/4802—Devices characterised by the use of electric or magnetic means for measuring angular speed by measuring frequency of generated current or voltage by using electronic circuits in general
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Networks Using Active Elements (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US388372A US3890577A (en) | 1973-08-15 | 1973-08-15 | Vital active low-pass filter |
Publications (1)
Publication Number | Publication Date |
---|---|
IT1016623B true IT1016623B (it) | 1977-06-20 |
Family
ID=23533845
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
IT69286/74A IT1016623B (it) | 1973-08-15 | 1974-07-18 | Rivelatore di sovravelocita par ticolarmente per mezzi ferroviari |
Country Status (2)
Country | Link |
---|---|
US (1) | US3890577A (it) |
IT (1) | IT1016623B (it) |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB1534319A (en) * | 1976-08-20 | 1978-11-29 | Cossor Ltd A C | Electrical filter networks |
US4320354A (en) * | 1979-11-26 | 1982-03-16 | American Standard Inc. | Fail-safe band-pass circuit |
US4368440A (en) * | 1980-10-23 | 1983-01-11 | American Standard Inc. | Fail-safe low-pass filtering circuit |
US5283507A (en) * | 1990-12-20 | 1994-02-01 | General Electric Company | Regenerative braking protection for an electrically-propelled traction vehicle |
JP3080723B2 (ja) * | 1991-10-17 | 2000-08-28 | 富士通株式会社 | フィルタ回路及びフィルタ集積回路 |
US7496133B2 (en) * | 2002-11-01 | 2009-02-24 | Broadcom Corporation | Multi-rate on-chip OCN filter for a transceiver system |
JP4586760B2 (ja) * | 2006-03-29 | 2010-11-24 | Tdk株式会社 | ローパスフィルタ及びローパスフィルタアレイ |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR1398924A (fr) * | 1964-04-03 | 1965-05-14 | Westinghouse Freins & Signaux | Circuit logique de sécurité réalisant l'opération alpha, beta à fonction combinée négation et intersection |
US3296546A (en) * | 1964-08-31 | 1967-01-03 | Jr William J Schneider | Transistor circuit constructions for active type band pass filters |
US3769606A (en) * | 1971-05-26 | 1973-10-30 | Singer Co | Digitally controlled frequency filter |
US3729695A (en) * | 1972-05-18 | 1973-04-24 | Bell Telephone Labor Inc | Commutating capacitor impedance device |
-
1973
- 1973-08-15 US US388372A patent/US3890577A/en not_active Expired - Lifetime
-
1974
- 1974-07-18 IT IT69286/74A patent/IT1016623B/it active
Also Published As
Publication number | Publication date |
---|---|
US3890577A (en) | 1975-06-17 |
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