NL64971C - - Google Patents
Info
- Publication number
- NL64971C NL64971C NL64971DA NL64971C NL 64971 C NL64971 C NL 64971C NL 64971D A NL64971D A NL 64971DA NL 64971 C NL64971 C NL 64971C
- Authority
- NL
- Netherlands
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F21/00—Variable inductances or transformers of the signal type
- H01F21/02—Variable inductances or transformers of the signal type continuously variable, e.g. variometers
- H01F21/06—Variable inductances or transformers of the signal type continuously variable, e.g. variometers by movement of core or part of core relative to the windings as a whole
- H01F21/065—Measures for obtaining a desired relation between the position of the core and the inductance
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03J—TUNING RESONANT CIRCUITS; SELECTING RESONANT CIRCUITS
- H03J3/00—Continuous tuning
- H03J3/02—Details
- H03J3/10—Circuit arrangements for fine tuning, e.g. bandspreading
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Channel Selection Circuits, Automatic Tuning Circuits (AREA)
- Magnetic Resonance Imaging Apparatus (AREA)
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE536412X | 1938-10-13 | ||
| DE2285029X | 1939-06-22 | ||
| DE2252100X | 1939-06-28 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| NL64971C true NL64971C (en) |
Family
ID=32096473
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NL64971D NL64971C (en) | 1938-10-13 |
Country Status (6)
| Country | Link |
|---|---|
| US (2) | US2252100A (en) |
| BE (1) | BE440362A (en) |
| DE (1) | DE1081072B (en) |
| FR (3) | FR860823A (en) |
| GB (1) | GB536412A (en) |
| NL (1) | NL64971C (en) |
Families Citing this family (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| BE551064A (en) * | 1940-08-28 | |||
| DE761144C (en) * | 1941-01-27 | 1952-11-10 | Telefunken Gmbh | Receiver with spread spectrum in the shortwave range |
| DE976578C (en) * | 1941-04-11 | 1963-12-05 | Siemens Ag | Variometer arrangement with different variation ranges |
| BE446251A (en) * | 1941-07-01 | |||
| DE952184C (en) * | 1942-03-14 | 1956-11-15 | Lorenz C Ag | Receiver with permeability adjustment by moving iron cores for band spreading |
| US2424506A (en) * | 1942-10-24 | 1947-07-22 | Rca Corp | Permeability-tuned short-wave spread-band receiver |
| DE963884C (en) * | 1949-03-04 | 1957-05-16 | Siemens Ag | Circuit for frequency adjustment |
| DE933346C (en) * | 1950-10-21 | 1955-09-22 | Siemens Ag | Variometer with movable iron core, especially for shortwave band spreading in radio equipment |
| DE864894C (en) * | 1951-03-15 | 1953-01-29 | Saba Gmbh | Device for fine tuning of high-frequency oscillation circuits, preferably for radio equipment |
| DE902265C (en) * | 1951-11-20 | 1954-01-21 | Oskar Vierling Dr | Voting arrangement and construction of small receivers |
| DE4012265A1 (en) * | 1990-04-17 | 1991-10-24 | Toepholm & Westermann | CIRCUIT ARRANGEMENT FOR AN OUTPUT TANK CIRCUIT OF A TRANSMITTER END STAGE OPERATED WITH FREQUENCY REVERSING |
| US5302415A (en) * | 1992-12-08 | 1994-04-12 | E. I. Du Pont De Nemours And Company | Electroless plated aramid surfaces and a process for making such surfaces |
-
0
- NL NL64971D patent/NL64971C/xx active
- BE BE440362D patent/BE440362A/xx unknown
-
1939
- 1939-06-28 DE DEP2146D patent/DE1081072B/en active Pending
- 1939-10-10 GB GB27623/39A patent/GB536412A/en not_active Expired
- 1939-10-12 FR FR860823D patent/FR860823A/en not_active Expired
-
1940
- 1940-05-09 US US334113A patent/US2252100A/en not_active Expired - Lifetime
- 1940-05-11 US US334499A patent/US2285029A/en not_active Expired - Lifetime
-
1941
- 1941-02-15 FR FR51420D patent/FR51420E/en not_active Expired
- 1941-02-18 FR FR51427D patent/FR51427E/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| US2285029A (en) | 1942-06-02 |
| FR860823A (en) | 1941-01-24 |
| GB536412A (en) | 1941-05-14 |
| BE440362A (en) | |
| US2252100A (en) | 1941-08-12 |
| FR51420E (en) | 1942-06-24 |
| FR51427E (en) | 1942-06-24 |
| DE1081072B (en) | 1960-05-05 |