GB617653A - Improvements in variable inductance tuning devices - Google Patents
Improvements in variable inductance tuning devicesInfo
- Publication number
- GB617653A GB617653A GB30288/46A GB3028846A GB617653A GB 617653 A GB617653 A GB 617653A GB 30288/46 A GB30288/46 A GB 30288/46A GB 3028846 A GB3028846 A GB 3028846A GB 617653 A GB617653 A GB 617653A
- Authority
- GB
- United Kingdom
- Prior art keywords
- turns
- coils
- coil
- remainder
- variable inductance
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
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
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Coils Or Transformers For Communication (AREA)
Abstract
617,653. Transformers and inductances. BRITISH THOMSON-HOUSTON CO., Ltd. Oct. 10, 1946, No. 30288. Convention date, Oct. 12, 1945. [Class 38 (ii)] In a variable inductance tuning device having two co-axial coils 2, 3, the variations in coupling between the coils caused by the axial movement of an iron core 5 into the coils are counteracted by concentrating the majority of the turns of one of the coils in a region at the core entrance end of the coil, as at A, while the remainder of the turns are openly and evenly distributed. over the remainder of the coil, as at B. Another embodiment provides for the remainder of the turns to be accommodated in a region between the concentrated section at A and the opposite end of the coil. The turns of the secondary coil 3 may also be non-uniformly distributed. Specification 556,774 is referred to.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US617653XA | 1945-10-12 | 1945-10-12 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB617653A true GB617653A (en) | 1949-02-09 |
Family
ID=22037976
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB30288/46A Expired GB617653A (en) | 1945-10-12 | 1946-10-10 | Improvements in variable inductance tuning devices |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB617653A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1002825B (en) * | 1952-08-21 | 1957-02-21 | Aladdin Ind Inc | Tuning device for high frequency with adjustable self-induction |
| DE1261949B (en) * | 1962-12-24 | 1968-02-29 | Siemens Ag | Ignitor for xenon and mercury vapor high pressure lamps |
-
1946
- 1946-10-10 GB GB30288/46A patent/GB617653A/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1002825B (en) * | 1952-08-21 | 1957-02-21 | Aladdin Ind Inc | Tuning device for high frequency with adjustable self-induction |
| DE1261949B (en) * | 1962-12-24 | 1968-02-29 | Siemens Ag | Ignitor for xenon and mercury vapor high pressure lamps |
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