BE471331A - - Google Patents
Info
- Publication number
- BE471331A BE471331A BE471331DA BE471331A BE 471331 A BE471331 A BE 471331A BE 471331D A BE471331D A BE 471331DA BE 471331 A BE471331 A BE 471331A
- Authority
- BE
- Belgium
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
- H04B1/1607—Supply circuits
- H04B1/1623—Supply circuits using tubes
-
- 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
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03G—CONTROL OF AMPLIFICATION
- H03G3/00—Gain control in amplifiers or frequency changers
- H03G3/02—Manually-operated control
- H03G3/04—Manually-operated control in untuned amplifiers
- H03G3/06—Manually-operated control in untuned amplifiers having discharge tubes
- H03G3/08—Manually-operated control in untuned amplifiers having discharge tubes incorporating negative feedback
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; ELECTRIC HEARING AIDS; PUBLIC ADDRESS SYSTEMS
- H04R25/00—Electric hearing aids
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Power Engineering (AREA)
- Amplifiers (AREA)
- Emergency Protection Circuit Devices (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US371498A US2342822A (en) | 1940-12-24 | 1940-12-24 | Amplifying system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE471331A true BE471331A (cg-RX-API-DMAC7.html) |
Family
ID=23464205
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE471331D BE471331A (cg-RX-API-DMAC7.html) | 1940-12-24 |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US2342822A (cg-RX-API-DMAC7.html) |
| BE (1) | BE471331A (cg-RX-API-DMAC7.html) |
| FR (1) | FR942174A (cg-RX-API-DMAC7.html) |
| GB (1) | GB552331A (cg-RX-API-DMAC7.html) |
| NL (1) | NL68241C (cg-RX-API-DMAC7.html) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2481533A (en) * | 1944-06-06 | 1949-09-13 | Rca Corp | Audio amplifier circuits for radio transmitters |
| US2710721A (en) * | 1945-11-27 | 1955-06-14 | Amasa S Bishop | Electronic dividing circuit |
| US2541811A (en) * | 1947-10-10 | 1951-02-13 | Joseph W Crownover | Hearing aid amplifier |
| US2761918A (en) * | 1952-11-19 | 1956-09-04 | Dictograph Products Co Inc | Amplifier with gain control and power control |
| WO2007009483A1 (en) * | 2005-07-21 | 2007-01-25 | Freescale Semiconductor, Inc. | Microphone amplification arrangement and integrated circuit therefor |
-
0
- BE BE471331D patent/BE471331A/xx unknown
- NL NL68241D patent/NL68241C/xx active
-
1940
- 1940-12-24 US US371498A patent/US2342822A/en not_active Expired - Lifetime
-
1941
- 1941-12-15 GB GB16139/41A patent/GB552331A/en not_active Expired
-
1947
- 1947-02-03 FR FR942174D patent/FR942174A/fr not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| FR942174A (fr) | 1949-02-01 |
| GB552331A (en) | 1943-04-01 |
| US2342822A (en) | 1944-02-29 |
| NL68241C (cg-RX-API-DMAC7.html) |