GB568436A - Improvements in or relating to variable inductance devices and variable permeabilitytuning arrangements - Google Patents
Improvements in or relating to variable inductance devices and variable permeabilitytuning arrangementsInfo
- Publication number
- GB568436A GB568436A GB16040/43A GB1604043A GB568436A GB 568436 A GB568436 A GB 568436A GB 16040/43 A GB16040/43 A GB 16040/43A GB 1604043 A GB1604043 A GB 1604043A GB 568436 A GB568436 A GB 568436A
- Authority
- GB
- United Kingdom
- Prior art keywords
- variable
- core
- permeabilitytuning
- arrangements
- relating
- 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
- 230000008878 coupling Effects 0.000 abstract 1
- 238000010168 coupling process Methods 0.000 abstract 1
- 238000005859 coupling reaction Methods 0.000 abstract 1
- 239000006249 magnetic particle Substances 0.000 abstract 1
- 230000035699 permeability Effects 0.000 abstract 1
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)
- Near-Field Transmission Systems (AREA)
Abstract
568,436. Inductances. MARCONI'S WIRELESS TELEGRAPH CO., Ltd. Sept. 30, 1943, No. 16040. Convention date, Sept. 30, 1942. [Class 38 (ii)] A variable inductance for permeability tuning in wireless receivers is provided with a movable " tapered " core 1 of at least twice the length of the coil 3 so as to increase the range of movement and thus permit of direct coupling between the core-moving mechanism 9 and the tuning indicator 13 while retaining a long open scale 15. The " tapering" may be in steps, Fig. 1, or continuous. Fig. 2, or it may be produced by a graded distribution of the magnetic particles of which the core is composed. Specification 412,642, [Group XXXVI], is referred to.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US568436XA | 1942-09-30 | 1942-09-30 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB568436A true GB568436A (en) | 1945-04-04 |
Family
ID=22006900
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB16040/43A Expired GB568436A (en) | 1942-09-30 | 1943-09-30 | Improvements in or relating to variable inductance devices and variable permeabilitytuning arrangements |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB568436A (en) |
-
1943
- 1943-09-30 GB GB16040/43A patent/GB568436A/en not_active Expired
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