GB712808A - Improvements in or relating to inductance devices - Google Patents
Improvements in or relating to inductance devicesInfo
- Publication number
- GB712808A GB712808A GB31537/52A GB3153752A GB712808A GB 712808 A GB712808 A GB 712808A GB 31537/52 A GB31537/52 A GB 31537/52A GB 3153752 A GB3153752 A GB 3153752A GB 712808 A GB712808 A GB 712808A
- Authority
- GB
- United Kingdom
- Prior art keywords
- core
- shell
- aperture
- cylinder
- dec
- 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
- 230000004907 flux Effects 0.000 abstract 2
- 230000005294 ferromagnetic effect Effects 0.000 abstract 1
- 239000003302 ferromagnetic material Substances 0.000 abstract 1
- 239000000696 magnetic material Substances 0.000 abstract 1
- 229910000859 α-Fe Inorganic materials 0.000 abstract 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F17/00—Fixed inductances of the signal type
- H01F17/04—Fixed inductances of the signal type with magnetic core
- H01F17/043—Fixed inductances of the signal type with magnetic core with two, usually identical or nearly identical parts enclosing completely the coil (pot cores)
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Burglar Alarm Systems (AREA)
Abstract
712,808. Inductors. WESTERN ELECTRIC CO., Inc. Dec. 12,1952 [Dec. 18, 1951], No. 31537/52. Class 38(2) A high frequency inductor comprises a shell 10 and core 11 both of ferromagnetic material such as ferrite with a space 23 between in which coils 17 are placed surrounding the core. Air gaps are formed by a paper disc 13 and a gap 43 between the core 11 and shell 10. To vary the value of inductance, the reluctance of the flux path is altered by the vertical movement of a ferromagnetic tuning cylinder 36 which provides a by-pass to the air gap 43 for the flux. This cylinder has a threaded head 35 of non-conducting, non- magnetic material which screws into an aperture 32 of an insulating terminal plate 27. The tuning cylinder is locked in position by a set screw 37 which bears on a bent spring strip 38 lying in a transverse hole 39 in head 35 with its ends on the screw thread of aperture 32. The lowest position of the tuning cylinder may be determined by a fixed shoulder stop 33 or by an adjustable stop formed by split ring which screws into aperture 32, Fig. 4 (not shown). To give best results the radius PR of the core should be between 0.4 and 0.5 and the height HR of the shell should be between 1.0 and 1.25 times the outer radius R of the shell respectively.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US712808XA | 1951-12-18 | 1951-12-18 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB712808A true GB712808A (en) | 1954-07-28 |
Family
ID=22100357
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB31537/52A Expired GB712808A (en) | 1951-12-18 | 1952-12-12 | Improvements in or relating to inductance devices |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB712808A (en) |
-
1952
- 1952-12-12 GB GB31537/52A patent/GB712808A/en not_active Expired
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