GB628812A - Improvements in or relating to moving-core inductance coils - Google Patents
Improvements in or relating to moving-core inductance coilsInfo
- Publication number
- GB628812A GB628812A GB11007/46A GB1100746A GB628812A GB 628812 A GB628812 A GB 628812A GB 11007/46 A GB11007/46 A GB 11007/46A GB 1100746 A GB1100746 A GB 1100746A GB 628812 A GB628812 A GB 628812A
- Authority
- GB
- United Kingdom
- Prior art keywords
- coil
- chassis
- plate
- conducting surface
- metal
- 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
Abstract
628,812. Inductances. PHILIPS LAMPS, Ltd. April 10, 1946, No. 11007. Convention date, Jan. 5, 1942. [Class 38 (ii)] In order to reduce the effect upon the tuning when the movable core of an inductance coil is displaced relative to a metal chassis or other conducting surface on which the coil may be mounted, a short-circuited winding made of a material of higher conductivity than the chassis or other conducting surface is provided in a position between the coil and the conducting surface. In an example a coil 2 is wound upon an insulating cylinder 1 which is secured on an iron chassis-plate 4 by supports 3, and a ring 6 of copper or other metal having a higher conductivity than the chassisplate is located between the latter and the coil winding. Tuning may be effected either by moving the core 5 downwardly in the direction of the arrow, or upwardly through the hole in the chassis-plate. The Specification as open to inspection under Sect. 91 (4) comprises also a modification, Fig. 2 (Cancelled, not shown), wherein the short-circuited winding is constituted by a metal screening cylinder which surrounds the inductance coil and extends to the chassis-plate. This subjectmatter does not appear in the Specification as accepted.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| NL628812X | 1942-01-05 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB628812A true GB628812A (en) | 1949-09-06 |
Family
ID=19788663
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB11007/46A Expired GB628812A (en) | 1942-01-05 | 1946-04-10 | Improvements in or relating to moving-core inductance coils |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB628812A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1289941B (en) * | 1953-06-01 | 1969-02-27 | Boehme Chemie Gmbh | Water-soluble condensation products from dicyandiamide, oxo compounds and salts of sulphurous acid for tanning skins or pelts |
-
1946
- 1946-04-10 GB GB11007/46A patent/GB628812A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1289941B (en) * | 1953-06-01 | 1969-02-27 | Boehme Chemie Gmbh | Water-soluble condensation products from dicyandiamide, oxo compounds and salts of sulphurous acid for tanning skins or pelts |
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