BR7701123A - Aparelho amplificador de sinal - Google Patents
Aparelho amplificador de sinalInfo
- Publication number
- BR7701123A BR7701123A BR7701123A BR7701123A BR7701123A BR 7701123 A BR7701123 A BR 7701123A BR 7701123 A BR7701123 A BR 7701123A BR 7701123 A BR7701123 A BR 7701123A BR 7701123 A BR7701123 A BR 7701123A
- Authority
- BR
- Brazil
- Prior art keywords
- signal amplifier
- amplifier
- signal
- Prior art date
Links
Classifications
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03F—AMPLIFIERS
- H03F1/00—Details of amplifiers with only discharge tubes, only semiconductor devices or only unspecified devices as amplifying elements
- H03F1/52—Circuit arrangements for protecting such amplifiers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61L—GUIDING RAILWAY TRAFFIC; ENSURING THE SAFETY OF RAILWAY TRAFFIC
- B61L23/00—Control, warning or like safety means along the route or between vehicles or trains
- B61L23/08—Control, warning or like safety means along the route or between vehicles or trains for controlling traffic in one direction only
- B61L23/14—Control, warning or like safety means along the route or between vehicles or trains for controlling traffic in one direction only automatically operated
- B61L23/16—Track circuits specially adapted for section blocking
- B61L23/168—Track circuits specially adapted for section blocking using coded current
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Mechanical Engineering (AREA)
- Amplifiers (AREA)
- Electric Propulsion And Braking For Vehicles (AREA)
- Train Traffic Observation, Control, And Security (AREA)
- Tone Control, Compression And Expansion, Limiting Amplitude (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US05/661,460 US4042888A (en) | 1976-02-26 | 1976-02-26 | Signal amplifier apparatus with fail-safe limited gain |
Publications (1)
Publication Number | Publication Date |
---|---|
BR7701123A true BR7701123A (pt) | 1977-10-18 |
Family
ID=24653691
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
BR7701123A BR7701123A (pt) | 1976-02-26 | 1977-02-24 | Aparelho amplificador de sinal |
Country Status (5)
Country | Link |
---|---|
US (1) | US4042888A (pt) |
JP (1) | JPS5819163B2 (pt) |
BR (1) | BR7701123A (pt) |
CA (1) | CA1087696A (pt) |
IT (1) | IT1104779B (pt) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2936609A1 (de) * | 1979-09-11 | 1981-04-02 | Hoechst Ag, 6000 Frankfurt | Verfahren zur herstellung von 2-chlorformylethyl-methyl-phosphinsaeurechloriden |
US4866261A (en) * | 1987-01-02 | 1989-09-12 | Motorola, Inc. | Data limiter having current controlled response time |
AU627537B2 (en) * | 1989-01-17 | 1992-08-27 | Shop-Vac Corporation | Pressure washer with spring-less outlet to inlet bypass |
US5230471A (en) * | 1991-03-08 | 1993-07-27 | Shop-Vac Corporation | Pressure washer |
Family Cites Families (2)
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 |
US3838353A (en) * | 1973-08-15 | 1974-09-24 | Westinghouse Electric Corp | Amplifier with failsafe predertermined gain |
-
1976
- 1976-02-26 US US05/661,460 patent/US4042888A/en not_active Expired - Lifetime
-
1977
- 1977-02-23 CA CA272,501A patent/CA1087696A/en not_active Expired
- 1977-02-24 BR BR7701123A patent/BR7701123A/pt unknown
- 1977-02-25 JP JP52019396A patent/JPS5819163B2/ja not_active Expired
- 1977-02-25 IT IT20707/77A patent/IT1104779B/it active
Also Published As
Publication number | Publication date |
---|---|
IT1104779B (it) | 1985-10-28 |
JPS5819163B2 (ja) | 1983-04-16 |
CA1087696A (en) | 1980-10-14 |
JPS52104852A (en) | 1977-09-02 |
US4042888A (en) | 1977-08-16 |
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