OA048E - - Google Patents
Info
- Publication number
- OA048E OA048E OA50830A OA50830A OA048E OA 048 E OA048 E OA 048E OA 50830 A OA50830 A OA 50830A OA 50830 A OA50830 A OA 50830A OA 048 E OA048 E OA 048E
- Authority
- OA
- OAPI
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/06—Receivers
- H04B1/16—Circuits
-
- 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
- H03F1/02—Modifications of amplifiers to raise the efficiency, e.g. gliding Class A stages, use of an auxiliary oscillation
- H03F1/0205—Modifications of amplifiers to raise the efficiency, e.g. gliding Class A stages, use of an auxiliary oscillation in transistor amplifiers
- H03F1/0211—Modifications of amplifiers to raise the efficiency, e.g. gliding Class A stages, use of an auxiliary oscillation in transistor amplifiers with control of the supply voltage or current
- H03F1/0244—Stepped control
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03F—AMPLIFIERS
- H03F3/00—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
- H03F3/181—Low-frequency amplifiers, e.g. audio preamplifiers
- H03F3/183—Low-frequency amplifiers, e.g. audio preamplifiers with semiconductor devices only
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Multimedia (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Amplifiers (AREA)
- Input Circuits Of Receivers And Coupling Of Receivers And Audio Equipment (AREA)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR873856A FR1308034A (fr) | 1961-09-21 | 1961-09-21 | Radio-récepteur à transistors et à écouteurs |
| FR907045A FR82171E (fr) | 1961-09-21 | 1962-08-16 | Radio-récepteur à transistors et à écouteurs |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| OA048E true OA048E (fr) | 1968-08-07 |
Family
ID=26192391
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| OA50830A OA048E (fr) | 1961-09-21 | 1964-12-12 | |
| OA51143A OA01044A (fr) | 1961-09-21 | 1964-12-30 | Radiorécepteur à transitors et à écouteurs. |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| OA51143A OA01044A (fr) | 1961-09-21 | 1964-12-30 | Radiorécepteur à transitors et à écouteurs. |
Country Status (6)
| Country | Link |
|---|---|
| BE (1) | BE622641A (fr) |
| CH (1) | CH396101A (fr) |
| DE (1) | DE1158118B (fr) |
| FR (2) | FR1308034A (fr) |
| GB (1) | GB949748A (fr) |
| OA (2) | OA048E (fr) |
-
0
- BE BE622641D patent/BE622641A/xx unknown
-
1961
- 1961-09-21 FR FR873856A patent/FR1308034A/fr not_active Expired
-
1962
- 1962-08-16 FR FR907045A patent/FR82171E/fr not_active Expired
- 1962-09-18 DE DEN22124A patent/DE1158118B/de active Pending
- 1962-09-18 CH CH1102562A patent/CH396101A/de unknown
- 1962-09-18 GB GB35490/62A patent/GB949748A/en not_active Expired
-
1964
- 1964-12-12 OA OA50830A patent/OA048E/xx unknown
- 1964-12-30 OA OA51143A patent/OA01044A/fr unknown
Also Published As
| Publication number | Publication date |
|---|---|
| FR1308034A (fr) | 1962-11-03 |
| GB949748A (en) | 1964-02-19 |
| DE1158118B (de) | 1963-11-28 |
| FR82171E (fr) | 1964-01-04 |
| BE622641A (fr) | |
| CH396101A (de) | 1965-07-31 |
| OA01044A (fr) | 1968-08-07 |