NL55929B - - Google Patents
Info
- Publication number
- NL55929B NL55929B NL55929DB NL55929B NL 55929 B NL55929 B NL 55929B NL 55929D B NL55929D B NL 55929DB NL 55929 B NL55929 B NL 55929B
- Authority
- NL
- Netherlands
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R3/00—Circuits for transducers, loudspeakers or microphones
- H04R3/002—Damping circuit arrangements for transducers, e.g. motional feedback circuits
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03F—AMPLIFIERS
- H03F3/00—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
- H03F3/02—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements with tubes only
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Power Engineering (AREA)
- Tone Control, Compression And Expansion, Limiting Amplitude (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB746266X | 1930-03-10 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| NL55929B true NL55929B (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) |
Family
ID=10496029
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NL55929D NL55929B (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) | 1930-03-10 |
Country Status (2)
| Country | Link |
|---|---|
| DE (1) | DE746266C (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) |
| NL (1) | NL55929B (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE448473C (de) * | 1927-08-19 | Hugo Heberlein | Vorrichtung zum Aufzeichnen von Toenen | |
| DE290109C (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) * | ||||
| FR499309A (fr) * | 1917-06-08 | 1920-02-07 | Submarine Signal Co | Perfectionnements dans les méthodes et appareils pour l'élimination des vibrations parasites |
| GB129670A (en) * | 1917-06-08 | 1919-07-24 | Reginald Aubrey Fessenden | Improvement in Methods and Apparatus for Eliminating Undesired Vibrations of Particular Frequencies. |
| GB160223A (en) * | 1919-11-18 | 1921-03-18 | Adrian Francis Sykes | Improvements in telephonic and like apparatus |
| GB215104A (en) * | 1923-02-05 | 1924-05-05 | Henry Joseph Round | Improved means for reproducing sound |
| DE465588C (de) * | 1924-01-01 | 1928-09-25 | Electrical Res Prod Inc | Anordnung zur Aufzeichnung oder Wiedergabe von Schwingungen, Schallschwingungen o. dgl. |
| DE451662C (de) * | 1925-03-31 | 1927-11-03 | Walter Hahnemann | Vorrichtung zur Aufnahme und Wiedergabe von Schallschwingungen und deren Umwandlung in elektrische Stroeme und umgekehrt |
-
0
- NL NL55929D patent/NL55929B/xx unknown
-
1931
- 1931-03-10 DE DEC44513D patent/DE746266C/de not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| DE746266C (de) | 1944-06-15 |