GB694559A - Improvements in or relating to coils comprising a core of ferromagnetic material - Google Patents
Improvements in or relating to coils comprising a core of ferromagnetic materialInfo
- Publication number
- GB694559A GB694559A GB9237/52A GB923752A GB694559A GB 694559 A GB694559 A GB 694559A GB 9237/52 A GB9237/52 A GB 9237/52A GB 923752 A GB923752 A GB 923752A GB 694559 A GB694559 A GB 694559A
- Authority
- GB
- United Kingdom
- Prior art keywords
- pot
- strip
- rod
- coils
- april
- 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
- 239000003302 ferromagnetic material Substances 0.000 title 1
- 239000000843 powder Substances 0.000 abstract 2
- 229910000859 α-Fe Inorganic materials 0.000 abstract 2
- 229910001369 Brass Inorganic materials 0.000 abstract 1
- 239000000853 adhesive Substances 0.000 abstract 1
- 230000001070 adhesive effect Effects 0.000 abstract 1
- 238000005452 bending Methods 0.000 abstract 1
- 239000010951 brass Substances 0.000 abstract 1
- 230000005294 ferromagnetic effect Effects 0.000 abstract 1
- 239000011810 insulating material Substances 0.000 abstract 1
- 229920000915 polyvinyl chloride Polymers 0.000 abstract 1
- 239000004800 polyvinyl chloride Substances 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)
- Coils Or Transformers For Communication (AREA)
- Insulating Of Coils (AREA)
Abstract
694,559. Inductances and transformers. PHILIPS ELECTRICAL INDUSTRIES, Ltd. April 10, 1952 [April 17, 1951], No. 9237/52. Addition to 633,107. Class 38 (ii). In a high-frequency inductance or transformer of the kind forming the subject of the parent Specification in which the coils are in an annular space surrounding a rod 7 and enclosed in a pot comprising cylinder 1 with two end dies 3, 5, the rod and pot being of magnetic ferrite, the member movable to adjust the inductance value is a strip 13 of insulating material such as polyvinylchloride coated with ferromagnetic powder 15 such as ferrite passing through the airgap between the rod 7 and end disc 3 and two holes 11, 11 in the pot. The cross-section of powder 15 varies along the strip 13. The pot may be clamped between two brass end-plates, the strip 13 passing through a slot in the rim of one plate. The strip can be fixed in position by bending the rim or by an adhesive.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| NL694559X | 1951-04-17 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB694559A true GB694559A (en) | 1953-07-22 |
Family
ID=19808836
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB9237/52A Expired GB694559A (en) | 1951-04-17 | 1952-04-10 | Improvements in or relating to coils comprising a core of ferromagnetic material |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB694559A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4553123A (en) * | 1982-09-03 | 1985-11-12 | Murata Manufacturing Co., Ltd. | Miniature inductor |
| US4717901A (en) * | 1984-03-23 | 1988-01-05 | Siemens Aktiengesellschaft | Electronic component, especially for a chip inductance |
-
1952
- 1952-04-10 GB GB9237/52A patent/GB694559A/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4553123A (en) * | 1982-09-03 | 1985-11-12 | Murata Manufacturing Co., Ltd. | Miniature inductor |
| US4717901A (en) * | 1984-03-23 | 1988-01-05 | Siemens Aktiengesellschaft | Electronic component, especially for a chip inductance |
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