GB662691A - Improvements in or relating to variable inductances - Google Patents
Improvements in or relating to variable inductancesInfo
- Publication number
- GB662691A GB662691A GB15006/49A GB1500649A GB662691A GB 662691 A GB662691 A GB 662691A GB 15006/49 A GB15006/49 A GB 15006/49A GB 1500649 A GB1500649 A GB 1500649A GB 662691 A GB662691 A GB 662691A
- Authority
- GB
- United Kingdom
- Prior art keywords
- winding
- tube
- core
- sleeve
- conducting
- 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
- H01F21/10—Variable inductances or transformers of the signal type continuously variable, e.g. variometers by means of a movable shield
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Coils Or Transformers For Communication (AREA)
Abstract
662,691. Inductances. ALADDIN INDUSTRIES, Inc. June 3, 1949 [Aug. 5, 1948], No. 15006/49. Class 38 (ii). An inductor suitable for tuning H.F. circuits is varied by move ment of a conducting member which is moved so as to vary the amount by which the winding is screened by the member from a magnetic core. A helical winding 22 of copper strip is wound on an insulating tube 20 and enclosed in an insulating tube 30. A powdered magnetic core 36 is fixed inside inner tube 20 by a resilient wire 34 held in a plug 26 which is fixed to base 24 and holds tube 20. The reactance of the winding is varied by axial movement of a conducting non-magnetic sleeve 38 between core 36 and inner tube 20 whereby the core is more or less screened from the winding. Conducting sleeves of several similar inductors may be fixed to a yoke 42 by screwed rods 40 for simultaneous variation. The Q of the inductance may remain constant or vary in some desired manner with variation of inductance. To provide a predetermined variation of inductance with sleeve movement, the tube 20 may be shaped suitably, e.g. barrelshaped, Fig. 4 (not shown), or hour-glassshaped or tapered, or the winding pitch may vary along the coil. In a modification the winding comprises parallel conductors, Figs. 5, 6 (not shown), the inductor then being of the kind forming the subject matter of Specification 662,692. In other modifications the conducting sleeve may surround the winding, the core being a tube, Figs. 5, 6 (not shown), or a rod, Figs. 7, 8 (not shown), outside the sleeve. The cross-section of the tubular parts may be of any suitable shape such as circular or oval.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US662691XA | 1948-08-05 | 1948-08-05 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB662691A true GB662691A (en) | 1951-12-12 |
Family
ID=22068404
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB15006/49A Expired GB662691A (en) | 1948-08-05 | 1949-06-03 | Improvements in or relating to variable inductances |
Country Status (2)
Country | Link |
---|---|
BE (1) | BE490141A (en) |
GB (1) | GB662691A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1775739A1 (en) * | 2005-09-05 | 2007-04-18 | Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.) | Bobbin for superconducting coil, and superconducting solenoid coil |
-
1949
- 1949-06-03 GB GB15006/49A patent/GB662691A/en not_active Expired
- 1949-07-13 BE BE490141A patent/BE490141A/fr unknown
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1775739A1 (en) * | 2005-09-05 | 2007-04-18 | Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.) | Bobbin for superconducting coil, and superconducting solenoid coil |
KR100823800B1 (en) | 2005-09-05 | 2008-04-21 | 가부시키가이샤 고베 세이코쇼 | Bobbin for superconducting coil, and superconducting solenoid coil |
Also Published As
Publication number | Publication date |
---|---|
BE490141A (en) | 1949-07-30 |
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