GB903178A - Improvements in or relating to tunable electrical impedance devices - Google Patents
Improvements in or relating to tunable electrical impedance devicesInfo
- Publication number
- GB903178A GB903178A GB1694659A GB1694659A GB903178A GB 903178 A GB903178 A GB 903178A GB 1694659 A GB1694659 A GB 1694659A GB 1694659 A GB1694659 A GB 1694659A GB 903178 A GB903178 A GB 903178A
- Authority
- GB
- United Kingdom
- Prior art keywords
- coil
- cap
- secured
- relating
- housing
- 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
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
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Coils Or Transformers For Communication (AREA)
Abstract
903,178. Inductances. CAMBRIDGE THERMIONIC CORPORATION. May 19, 1959, No. 16946/59. Class 38 (2). A variable inductance has its coil 27 arranged on a phenolic resin former 23 which fits in the narrower lower end 21.2 of a one-piece brass housing 21.1, the adjustable iron powder core 24 carried on spindle 25 screwing in the lower end of the housing at 21.3, being fully withdrawable from the coil. The winding is surrounded by a cup-shaped core 28 sitting on a rubber washer 21.9 and with a cap 29 surmounted by a sponge rubber spacer 31 under terminal board 32 which is held on by spring ring 35. Epoxy resin may be introduced into the coil space and cured. In a modification (Fig. 8), the spring ring is replaced by a cap 51, the adjustable core member is secured by a torsion spring 62 and the unit may be secured to a printed circuit panel 40.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1694659A GB903178A (en) | 1959-05-19 | 1959-05-19 | Improvements in or relating to tunable electrical impedance devices |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1694659A GB903178A (en) | 1959-05-19 | 1959-05-19 | Improvements in or relating to tunable electrical impedance devices |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB903178A true GB903178A (en) | 1962-08-15 |
Family
ID=10086512
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1694659A Expired GB903178A (en) | 1959-05-19 | 1959-05-19 | Improvements in or relating to tunable electrical impedance devices |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB903178A (en) |
-
1959
- 1959-05-19 GB GB1694659A patent/GB903178A/en not_active Expired
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