NL99230B - - Google Patents
Info
- Publication number
- NL99230B NL99230B NL99230DA NL99230B NL 99230 B NL99230 B NL 99230B NL 99230D A NL99230D A NL 99230DA NL 99230 B NL99230 B NL 99230B
- 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
- H03D—DEMODULATION OR TRANSFERENCE OF MODULATION FROM ONE CARRIER TO ANOTHER
- H03D7/00—Transference of modulation from one carrier to another, e.g. frequency-changing
- H03D7/18—Modifications of frequency-changers for eliminating image frequencies
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03J—TUNING RESONANT CIRCUITS; SELECTING RESONANT CIRCUITS
- H03J3/00—Continuous tuning
- H03J3/28—Continuous tuning of more than one resonant circuit simultaneously, the tuning frequencies of the circuits having a substantially constant difference throughout the tuning range
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Coils Or Transformers For Communication (AREA)
- Magnetic Resonance Imaging Apparatus (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| NL231616X | 1940-10-16 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| NL99230B true NL99230B (US07915450-20110329-C00059.png) |
Family
ID=19779997
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NL99230D NL99230B (US07915450-20110329-C00059.png) | 1940-10-16 | ||
| NL56233D NL56233C (US07915450-20110329-C00059.png) | 1940-10-16 |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NL56233D NL56233C (US07915450-20110329-C00059.png) | 1940-10-16 |
Country Status (6)
Families Citing this family (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2899654A (en) * | 1959-08-11 | Variable inductance device | ||
| US2474761A (en) * | 1942-07-15 | 1949-06-28 | Hartford Nat Bank & Trust Co | Coil having a slidable core and method of establishing the ratio between the maximumand minimum inductance thereof |
| US3052860A (en) * | 1945-09-17 | 1962-09-04 | Iii Francis M Walters | Radio frequency choke |
| US2505791A (en) * | 1946-02-27 | 1950-05-02 | Zenith Radio Corp | Inductance tuning apparatus |
| US2477749A (en) * | 1946-04-04 | 1949-08-02 | Aladdin Ind Inc | Inductor tuning system |
| US2528167A (en) * | 1948-03-23 | 1950-10-31 | Rca Corp | Band-spread tuning inductance device |
| US2496058A (en) * | 1948-05-22 | 1950-01-31 | Rca Corp | Permeability tuner |
| US2621324A (en) * | 1948-07-21 | 1952-12-09 | Rca Corp | Permeability tuned variable inductance |
| US2565261A (en) * | 1948-09-11 | 1951-08-21 | Rca Corp | Permeability tuning system for superheterodyne receiver |
| US2533810A (en) * | 1949-08-13 | 1950-12-12 | Aladdin Ind Inc | Wide band calibrated tuner and inductor for use therewith |
| US2645718A (en) * | 1950-06-06 | 1953-07-14 | Rca Corp | Variable inductance structure |
| US2750495A (en) * | 1951-11-20 | 1956-06-12 | Motorola Inc | Receiver which tunes by adjusting magnetic core antenna |
| US2979655A (en) * | 1957-09-19 | 1961-04-11 | Magnaflux Corp | Method and apparatus for detecting flaws |
| US3017589A (en) * | 1958-05-13 | 1962-01-16 | Int Resistance Co | Differential transformer |
| DE3618953A1 (de) * | 1986-06-05 | 1987-12-10 | Electronic Werke Deutschland | Amplitudenspule fuer die zeilenendstufe eines fernsehempfaengers |
-
0
- NL NL99230D patent/NL99230B/xx unknown
- BE BE450074D patent/BE450074A/xx unknown
- NL NL56233D patent/NL56233C/xx active
-
1941
- 1941-07-22 US US403564A patent/US2363101A/en not_active Expired - Lifetime
-
1942
- 1942-02-17 CH CH231616D patent/CH231616A/de unknown
-
1943
- 1943-04-15 FR FR894036D patent/FR894036A/fr not_active Expired
-
1946
- 1946-01-05 GB GB451/46A patent/GB605807A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| BE450074A (US07915450-20110329-C00059.png) | |
| FR894036A (fr) | 1944-12-12 |
| US2363101A (en) | 1944-11-21 |
| GB605807A (en) | 1948-07-30 |
| CH231616A (de) | 1944-03-31 |
| NL56233C (US07915450-20110329-C00059.png) |
