GB723846A - Improvements in or relating to adjustable inductance coils - Google Patents
Improvements in or relating to adjustable inductance coilsInfo
- Publication number
- GB723846A GB723846A GB2947852A GB2947852A GB723846A GB 723846 A GB723846 A GB 723846A GB 2947852 A GB2947852 A GB 2947852A GB 2947852 A GB2947852 A GB 2947852A GB 723846 A GB723846 A GB 723846A
- Authority
- GB
- United Kingdom
- Prior art keywords
- core
- nov
- air gap
- relating
- type
- 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
- 239000000463 material Substances 0.000 abstract 4
- 238000000034 method Methods 0.000 abstract 2
- 238000004519 manufacturing process Methods 0.000 abstract 1
- 238000003825 pressing Methods 0.000 abstract 1
- 239000007787 solid 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)
Abstract
723,846. Inductors. STANDARD TELEPHONES & CABLES, Ltd. Nov. 13, 1953 [Nov. 21, 1952], No. 29478/52. Class 38 (2). A method of adjusting to within fine limits during the process of manufacture the inductance of a coil 3 having a magnetic core comprises the steps of assembling the core in two portions 5, 6 separated by an air gap 7; inserting a non- magnetic hard-setting organic filling material 8 into the air gap, pressing the two parts 5, 6 of the core together whilst the material 8 is still deformable until the desired inductance has been obtained and finally allowing the material 8 to set into a hard solid. The material 8 may be of a type which adheres to the core parts 5, 6 or it may be of a type which does not adhere thereto, in which case the core members are held in clamps. Specification 673,267 is referred to.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB2947852A GB723846A (en) | 1952-11-21 | 1952-11-21 | Improvements in or relating to adjustable inductance coils |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB2947852A GB723846A (en) | 1952-11-21 | 1952-11-21 | Improvements in or relating to adjustable inductance coils |
Publications (1)
Publication Number | Publication Date |
---|---|
GB723846A true GB723846A (en) | 1955-02-09 |
Family
ID=10292197
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB2947852A Expired GB723846A (en) | 1952-11-21 | 1952-11-21 | Improvements in or relating to adjustable inductance coils |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB723846A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3028570A (en) * | 1958-05-19 | 1962-04-03 | Western Union Telegraph Co | Ferrite inductance cores |
EP1113464A2 (en) * | 1999-12-27 | 2001-07-04 | Alcatel USA Sourcing, L.P. | Microgapping process for magnetic cores |
-
1952
- 1952-11-21 GB GB2947852A patent/GB723846A/en not_active Expired
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3028570A (en) * | 1958-05-19 | 1962-04-03 | Western Union Telegraph Co | Ferrite inductance cores |
EP1113464A2 (en) * | 1999-12-27 | 2001-07-04 | Alcatel USA Sourcing, L.P. | Microgapping process for magnetic cores |
EP1113464A3 (en) * | 1999-12-27 | 2002-05-15 | Alcatel USA Sourcing, L.P. | Microgapping process for magnetic cores |
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