BE428227A - - Google Patents
Info
- Publication number
- BE428227A BE428227A BE428227DA BE428227A BE 428227 A BE428227 A BE 428227A BE 428227D A BE428227D A BE 428227DA BE 428227 A BE428227 A BE 428227A
- Authority
- BE
- Belgium
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C28/00—Alloys based on a metal not provided for in groups C22C5/00 - C22C27/00
-
- 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
- H03F1/34—Negative-feedback-circuit arrangements with or without positive feedback
- H03F1/36—Negative-feedback-circuit arrangements with or without positive feedback in discharge-tube amplifiers
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Power Engineering (AREA)
- Housings And Mounting Of Transformers (AREA)
- Amplifiers (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE206312X | 1937-05-24 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE428227A true BE428227A (de) |
Family
ID=5791826
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE428227D BE428227A (de) | 1937-05-24 |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US2221116A (de) |
| BE (1) | BE428227A (de) |
| CH (1) | CH206312A (de) |
| FR (1) | FR838319A (de) |
| GB (1) | GB497555A (de) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2752433A (en) * | 1948-06-30 | 1956-06-26 | Emi Ltd | Negative feedback amplifiers |
| GB853672A (en) * | 1957-01-21 | 1960-11-09 | Modern Telephones Great Britai | Improvements in or relating to transistor amplifiers |
| US3038125A (en) * | 1958-04-18 | 1962-06-05 | Philips Corp | Negative feedback circuit |
-
0
- BE BE428227D patent/BE428227A/xx unknown
-
1938
- 1938-04-19 US US202825A patent/US2221116A/en not_active Expired - Lifetime
- 1938-05-21 GB GB15218/38A patent/GB497555A/en not_active Expired
- 1938-05-23 CH CH206312D patent/CH206312A/de unknown
- 1938-05-23 FR FR838319D patent/FR838319A/fr not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| GB497555A (en) | 1938-12-21 |
| FR838319A (fr) | 1939-03-02 |
| US2221116A (en) | 1940-11-12 |
| CH206312A (de) | 1939-07-31 |