GB917534A - Improvements in or relating to high-frequency coils of the pot core type - Google Patents
Improvements in or relating to high-frequency coils of the pot core typeInfo
- Publication number
- GB917534A GB917534A GB22260/61A GB2226061A GB917534A GB 917534 A GB917534 A GB 917534A GB 22260/61 A GB22260/61 A GB 22260/61A GB 2226061 A GB2226061 A GB 2226061A GB 917534 A GB917534 A GB 917534A
- Authority
- GB
- United Kingdom
- Prior art keywords
- control member
- core
- pot core
- june
- diameter
- 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
- 239000011230 binding agent Substances 0.000 abstract 1
- 239000000919 ceramic Substances 0.000 abstract 1
- 239000003302 ferromagnetic material Substances 0.000 abstract 1
- 230000005291 magnetic effect Effects 0.000 abstract 1
- 239000012256 powdered iron 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)
- Coils Or Transformers For Communication (AREA)
- Electromagnets (AREA)
Abstract
917,534. Inductors. PHILIPS ELECTRICAL INDUSTRIES Ltd. June 20, 1961 [June 23, 1960], No. 22260/61. Class 38 (2). The inductance of a high-frequency coil 3 in a two-part ceramic, magnetic pot core 5, is varied by passage through a central bore 9, of a tapered cylindrical control member 11 of elastic ferromagnetic material, the reluctance of the core varying according to the variation of the diameter of the part of the control member level with an air-gap 7 in the central stem of the pot core. The diameter of the control member which may be of powdered iron or ferrite in a rubber binder, is such that at one end only it is elastically compressed in the core. The control member may be glued in any desired position. A further embodiment uses an axially bored control member threadedly engaged to a axially displaceable bolt rotatable in an internally screw-threaded abutment, Fig. 2 (not shown).
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| NL253006 | 1960-06-23 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB917534A true GB917534A (en) | 1963-02-06 |
Family
ID=19752421
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB22260/61A Expired GB917534A (en) | 1960-06-23 | 1961-06-20 | Improvements in or relating to high-frequency coils of the pot core type |
Country Status (3)
| Country | Link |
|---|---|
| US (1) | US3254319A (en) |
| CH (1) | CH392644A (en) |
| GB (1) | GB917534A (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3771332A (en) * | 1971-11-30 | 1973-11-13 | Vyzk A Vyvojovg Ustav Z | Apparatus for separately controlling knitting means |
| IT1056984B (en) * | 1975-03-20 | 1982-02-20 | Siemens Ag | ADJUSTABLE INDUCTANCE ELECTRIC COIL |
| US4523170A (en) * | 1982-11-05 | 1985-06-11 | Spang & Company | Adjustable air gap ferrite structures and methods of manufacture |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB493213A (en) * | 1937-04-28 | 1938-10-05 | Eduard Michaelis | Improvements in or relating to inductances having adjustable high frequency iron core |
| US2318415A (en) * | 1939-07-31 | 1943-05-04 | Gen Electric | High-frequency iron core |
| US2427872A (en) * | 1943-03-24 | 1947-09-23 | Rca Corp | Tapered magnetic core |
| US2388295A (en) * | 1943-07-02 | 1945-11-06 | Gen Electric | Mutual coupling |
| US2768359A (en) * | 1951-12-22 | 1956-10-23 | Honeywell Regulator Co | Variable inductor |
| US2717984A (en) * | 1951-12-27 | 1955-09-13 | Bell Telephone Labor Inc | Adjustable inductance device |
| US2786983A (en) * | 1953-11-12 | 1957-03-26 | Aladdin Ind Inc | High-voltage transformer |
-
1961
- 1961-04-25 US US105429A patent/US3254319A/en not_active Expired - Lifetime
- 1961-06-20 GB GB22260/61A patent/GB917534A/en not_active Expired
- 1961-06-20 CH CH719361A patent/CH392644A/en unknown
Also Published As
| Publication number | Publication date |
|---|---|
| US3254319A (en) | 1966-05-31 |
| CH392644A (en) | 1965-05-31 |
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